Graphic summary
  • Show / hide key
  • Information


Scientific and technological production
  •  

1 to 50 of 181 results
  • Lidar and S-band radar profiling of the atmosphere: Adaptive processing for Boundary-Layer monitoring, optical-parameter error estimation, and application cases  Open access

     Lange Vega, Diego
    Universitat Politècnica de Catalunya
    Theses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    La tesis doctoral aborda la teledetecció atmosfèrica amb tècniques lidar i radar (banda S) i llur tractament del senyal. La teledetecció activa amb aquests instruments ofereix resolucions espacials i temporals sense precedents en la perfilometria vertical de l¿atmosfera i recuperació de productes de dades òptics i físics atmosfèrics en un marc de creixent regulació mediambiental. El primer objectiu d¿aquesta tesi concerneix l¿estimació de cotes d¿error en la inversió del perfil del coeficient de retrodispersió atmosfèrica a partir de senyals lidar de tipus elàstic (és a dir, sense desplaçament de la longitud d¿ona en recepció al interactuar amb els dispersors atmosfèrics) mitjançant l¿algorisme d¿inversió de dues components de Klett-Fernald-Sasano. Aquest objectiu parteix de treballs previs en el Remote Sensing Lab. (RSLab) de la Universitat Politècnica de Catalunya (UPC) i permet obtenir cotes de primer ordre (aproximades) basades en propagació d¿errors i cotes (exactes) basades en el increment total de l¿error. Característica diferencial en front l¿estat de l¿art és l¿assimilació d¿errors sistemàtics (per exemple, entrades de cal¿libració d¿usuari) i aleatoris (relació senyal-soroll, SNR, finita) en forma matemàtica explícita.El segon objectiu, central de la tesis, aborda l¿estimació de l¿altura de la capa límit atmosfèrica (ABLH) a partir de senyal lidar elàstics i d¿observacions radar en banda S (ona continua amb modulació en freqüència, FMCW) utilitzant tècniques adaptatives basades en filtrat estès de Kalman (EKF). El filtre es basa en modelat morfològic de la transició atmosfèrica entre la capa de mescla i la troposfera lliure i en l¿estimació continua de la informació de covariança del soroll. En el prototipus lidar-EKF la tècnica proposada millora clarament les tècniques clàssiques d¿estimació de la ABLH como són les basades en mètodes derivatius, decisió de llindar, o el mètode de la variança-centroide. La formulació EKF s¿aplica tant a mesures procedents de ceilòmetres lidar como de la pròpia estació lidar UPC en escenes d¿alta i baixa SNR. Addicionalment, l¿enfoc lidar-EKF es reformula i s¿estén amb èxit a escenes radar en banda S (dispersió Bragg) en presència de fonts de soroll interferent (dispersió Rayleigh de, per exemple, insectes i ocells). En aquest context, la característica FMCW permet la capacitat de resolució en distància. L¿estimació de la ABLH amb els prototipus lidar-EKF i radar-EKF s¿intercompara en campanyes de mesura.Finalment, el tercer objectiu atén a l¿explotació de l¿estació lidar UPC existent: En una primera part introductòria, es formula un algorisme modificat de ¿gluing¿ per a la millora del marge dinàmic de canals lidar elàstics mitjançant combinació (o ¿enganxat¿) de senyals lidar adquirits analògicament i amb foto-comptatge. En una segona part, es presenten dos exemples (incloent l¿aplicació de l¿algorisme de ¿gluing¿) que il¿lustren les capacitats del lidar de la UPC en l¿observació atmosfèrica de dos recents erupcions volcàniques des de la xarxa d¿observació EARLINET (European Aerosol Research Lidar Network). Aquesta última és part de GALION (Global Atmospheric Watch Atmospheric Lidar Observation Network)-GEOSS (Global Earth Observation System of Systems).

    This Ph.D. thesis addresses remote sensing of the atmosphere by means of lidar and S-band clear-air weather radar, and related data signal processing. Active remote sensing by means of these instruments offers unprecedented capabilities of spatial and temporal resolutions for vertical atmospheric profiling and the retrieval of key optical and physical atmospheric products in an increasing environmental regulatory framework. The first goal is this Ph.D. concerns the estimation of error bounds in the inversion of the profile of the atmospheric backscatter coefficient from elastic lidar signals (i.e., without wavelength shift in reception when interacting with atmospheric scatterers) by means of the two-component inversion algorithm (the so-called Klett-Fernald-Sasano¿s algorithm). This objective departs from previous works at the Remote Sensing Lab. (RSLab) of the Universitat Politècnica de Catalunya (UPC) and derives first-order error-propagated bounds (approximate) and total-increment bounds (exact). As distinctive feature in the state of the art, the error bounds merge into a single body both systematic (i.e., user-calibration inputs) and random error sources (finite signal-to-noise ratio, SNR) yielding an explicit mathematical form. The second goal, central to this Ph.D., tackles retrieval of the Atmospheric Boundary Layer Height (ABLH) from elastic lidar and S-band Frequency-Modulated Continuous-Wave (FMCW) radar observations by using adaptive techniques based on the Extended Kalman Filter (EKF). The filter is based on morphological modelling of the Mixing-Layer-to-Free-Troposphere transition and continuous estimation of the noise covariance information. In the lidar-EKF realization the proposed technique is shown to outperform classic ABLH estimators such as those based on derivative techniques, thresholded decision, or the variance centroid method. The EKF formulation is applied to both ceilometer and UPC lidar records in high- and low-SNR scenes. The lidar-EKF approach is re-formulated and successfully extended to S-band radar scenes (Bragg¿s scattering) in presence of interferent noise sources (Rayleigh scattering from e.g., insects and birds). In this context, the FMCW feature enables the range-resolved capability. EKF-lidar and EKF-radar ABLH estimates are cross-examined from field campaign results. Finally, the third goal deals with exploitation of the existing UPC lidar station: In a first introductory part, a modified algorithm for enhancing the dynamic range of elastic lidar channels by ¿gluing¿ analog and photon-counting data records is formulated. In a second part, two case examples (including application of the gluing algorithm) are presented to illustrate the capabilities of the UPC lidar in networked atmospheric observation of two recent volcano eruption events as part of the EARLINET (European Aerosol Research Lidar Network). The latter is part of GALION (Global Atmospheric Watch Atmospheric Lidar Observation Network)-GEOSS (Global Earth Observation System of Systems) framework.

    La tesis doctoral aborda la teledetecció atmosfèrica amb tècniques lidar i radar (banda S) i llur tractament del senyal. La teledetecció activa amb aquests instruments ofereix resolucions espacials i temporals sense precedents en la perfilometria vertical de l'atmosfera i recuperació de productes de dades òptics i físics atmosfèrics en un marc de creixent regulació mediambiental. El primer objectiu d'aquesta tesi concerneix l'estimació de cotes d'error en la inversió del perfil del coeficient de retrodispersió atmosfèrica a partir de senyals lidar de tipus elàstic (és a dir, sense desplaçament de la longitud d'ona en recepció al interactuar amb els dispersors atmosfèrics) mitjançant l'algorisme d'inversió de dues components de Klett-Fernald-Sasano. Aquest objectiu parteix de treballs previs en el Remote Sensing Lab. (RSLab) de la Universitat Politècnica de Catalunya (UPC) i permet obtenir cotes de primer ordre (aproximades) basades en propagació d'errors i cotes (exactes) basades en el increment total de l'error. Característica diferencial en front l'estat de l'art és l'assimilació d'errors sistemàtics (per exemple, entrades de cal.libració d'usuari) i aleatoris (relació senyal-soroll, SNR, finita) en forma matemàtica explícita. El segon objectiu, central de la tesis, aborda l'estimació de l'altura de la capa límit atmosfèrica (ABLH) a partir de senyal lidar elàstics i d'observacions radar en banda S (ona continua amb modulació en freqüència, FMCW) utilitzant tècniques adaptatives basades en filtrat estès de Kalman (EKF). El filtre es basa en modelat morfològic de la transició atmosfèrica entre la capa de mescla i la troposfera lliure i en l'estimació continua de la informació de covariança del soroll. En el prototipus lidar-EKF la tècnica proposada millora clarament les tècniques clàssiques d'estimació de la ABLH como són les basades en mètodes derivatius, decisió de llindar, o el mètode de la variança-centroide. La formulació EKF s'aplica tant a mesures procedents de ceilòmetres lidar como de la pròpia estació lidar UPC en escenes d'alta i baixa SNR. Addicionalment, l'enfoc lidar-EKF es reformula i s'estén amb èxit a escenes radar en banda S (dispersió Bragg) en presència de fonts de soroll interferent (dispersió Rayleigh de, per exemple, insectes i ocells). En aquest context, la característica FMCW permet la capacitat de resolució en distància. L'estimació de la ABLH amb els prototipus lidar-EKF i radar-EKF s'intercompara en campanyes de mesura. Finalment, el tercer objectiu atén a l'explotació de l'estació lidar UPC existent: En una primera part introductòria, es formula un algorisme modificat de "gluing" per a la millora del marge dinàmic de canals lidar elàstics mitjançant combinació (o "enganxat") de senyals lidar adquirits analògicament i amb foto-comptatge. En una segona part, es presenten dos exemples (incloent l'aplicació de l'algorisme de "gluing") que il.lustren les capacitats del lidar de la UPC en l'observació atmosfèrica de dos recents erupcions volcàniques des de la xarxa d'observació EARLINET (European Aerosol Research Lidar Network). Aquesta última és part de GALION (Global Atmospheric Watch Atmospheric Lidar Observation Network)-GEOSS (Global Earth Observation System of Systems).

  • Grup de Fotònica

     Belmonte Molina, Aniceto; Canal Bienzobas, Fernando; Dios Otin, Victor Federico; Garcia Mateos, Jorge; Garcia Vizcaino, David; Hernandez Marco, Jordi; Muñoz Porcar, Constantino; Rocadenbosch Burillo, Francisco; Rodriguez Gomez, Alejandro Antonio; Sicard, Michaël; Tiana Alsina, Jordi; Anzuola Valencia, Esdras; Saeed, Umar; Comeron Tejero, Adolfo
    Competitive project

     Share

  • Sistema de estabilización para la compensación del movimiento angular en plataformas LIDAR móviles

     Rocadenbosch Burillo, Francisco; Tiana Alsina, Jordi; Bermejo Sanchez, Sergio; Vall-llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano Jose
    Date of request: 2013-07-22
    Invention patent

     Share Reference managers Reference managers Open in new window

  • Observación lidar atmosférica multi-espectral, procesado de la señal y recuperación de productos de datos: red europea y cal/val de satélites

     Comeron Tejero, Adolfo; Sicard, Michaël; Muñoz Porcar, Constantino; Garcia Vizcaino, David; Lange, Diego; Frasier, Steve; Tiana Alsina, Jordi; Rocadenbosch Burillo, Francisco
    Competitive project

     Share

  • Lidar remote sensing of pesticide spray drift

     Gregorio Lopez, Eduard
    Department of Signal Theory and Communications, Universitat de Lleida (UdL)
    Theses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Concept Design, Analysis, and Integration of the New U.P.C. Multispectral Lidar System  Open access

     Kumar, Dhiraj
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    The increasing need for range-resolved aerosol and water-vapour atmospheric observation networks worldwide has given rise to multi-spectral LIDARs (Light Detection and Ranging, a synonym of laser radar) as advanced remote sensing sensors. This Ph.D. presents the design, integration and analysis of the new 6-channel multispectral elastic/Raman LIDAR for aerosol and water-vapour content monitoring developed at the Remote Sensing Lab. (RSLAB) of the Universitat Politècnica de Catalunya (UPC). It is well known that the combination of at least three elastic and two Raman nitrogen channels are sufficient to enable retrieval of the optical and microphysical properties of aerosols with a key impact on climate change variables. The UPC lidar is part of the EARLINET (European Aerosol Research Lidar Network) -GALION (Global Atmospheric Watch Atmospheric Lidar Observation Network), a ground-based continental network including more than 28 stations. Currently, only 8 of the 28 EARLINET stations are of such advanced type. This Ph.D. specifically focuses on: (1) Concept link-budget instrument design and overlap factor assessment. The former includes opto-atmospheric parameter modelling and assessment of backscattered power and SNR levels, and maximum system range for the different reception channels (3 elastic, and 2 aerosol and 1 water-vapour Raman channels, ultraviolet to near-infrared bands). The latter studies the laser-telescope crossover function (or overlap function) by means of a novel ray-tracing Gaussian model. The problem of overlap function computation and its near-range sensitivity for medium size aperture (f/10, f/11) bi-axial tropospheric lidar systems using both detector and fiber-optics coupling alternatives at the telescope focal-plane is analysed using this new ray-tracing approach, which provides a much simpler solution than analytical-based methods. Sensitivity to laser divergence, field-lens and detector/fiber positions, and fiber¿s numerical aperture is considered. (2) Design and opto-mechanical implementation of the 6-channel polychromator (i.e., the spectrally selective unit in reception). Design trade-offs concerning light collimation, end-to-end transmissivity, net channel responsivity, and homogeneous spatial light distribution onto the detectors¿ active area discussed. (3) System integration and validation. This third part is two fold: On one hand, first-order backscatter-coefficient error bounds (a level-1 data product) for the two-component elastic lidar inversion algorithm are estimated for both random (observation noise) and systematic error sources (user¿s uncertainty in the backscatter-coefficient calibration, and user¿s uncertainty in the aerosol extinction-to-backscatter lidar ratio). On the other hand, the multispectral lidar so far integrated is described at both hardware and control software level. Statistical validation results for the new UPC lidar (today in routine operation) in the framework of SPALI-2010 intercomparison campaign are presented as part of EARLINET quality assurance / optimisation of instruments¿ program. The methodology developed in the first part of this Ph.D. has successfully been applied to the specification case study of the IFAE/UAB lidar system, which will be installed and operated at the Cherenkov Telescope Array (CTA) observatory. Finally, specs for automated unmanned unattended lidar operation with service times close to 365/24 are presented at the end of this Ph.D. in response to the increasing demand for larger observation times and availability periods of lidar stations.

  • Backscattered signal level and SNR validation methodology for tropospheric elastic lidars

     Lange, Diego; Kumar, Dhiraj; Rocadenbosch Burillo, Francisco
    IEEE International Geoscience and Remote Sensing Symposium
    p. 4707-4710
    DOI: 10.1109/IGARSS.2012.6350414
    Presentation's date: 2012-07
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    A methodology aimed at validating elastic-channel optical power return and signal-to-noise ratio (SNR) levels estimated at the link-budget design stage of a tropospheric lidar against the measured ones is presented. A Rayleigh fit along with knowledge of the atmospheric aerosol transmittance and emission energy is used to theoretically estimate the net voltage responsivity. As a further refinement, when simultaneous analog and photon-counting acquisition is available, the method formulates a rough estimate of the optical losses in the receiving chain.

    A methodology aimed at validating elastic-channel optical power return and signal-to-noise ratio (SNR) levels estimated at the link-budget design stage of a tropospheric lidar against the measured ones is presented. A Rayleigh fit along with knowledge of the atmospheric aerosol transmittance and emission energy is used to theoretically estimate the net voltage responsivity. As a further refinement, when simultaneous analog and photon-counting acquisition is available, the method formulates a rough estimate of the optical losses in the receiving chain. Preliminary validation of the link-budget-assessed optical power and SNR levels for the 1064-nm channel of the Remote Sensing Lab. (RSLab) lidar is discussed.

  • Red sobre técnicas y tecnologías avanzadas de teledetección y modelización de aerosoles atmosféricos

     Sicard, Michaël; Gassó Domingo, Santiago; Muñoz Porcar, Constantino; Baldasano Recio, Jose M.; Rodriguez Gomez, Alejandro Antonio; Garcia Vizcaino, David; Rocadenbosch Burillo, Francisco; Comeron Tejero, Adolfo
    Competitive project

     Share

  • Utilization of a field lens to improve the overlap function in lidar systems using optical fibers

     Comeron Tejero, Adolfo; Sicard, Michaël; Kumar, Dhiraj; Rocadenbosch Burillo, Francisco; Lange Vega, Diego
    International Laser Radar Conference
    p. 129-132
    Presentation's date: 2012-06-26
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Initial Training on Atmospheric Remote Sensing

     Baldasano Recio, Jose M.; Gassó Domingo, Santiago; Tiana Alsina, Jordi; Saeed, Umar; Banks, Robert Franklin; Rocadenbosch Burillo, Francisco
    Competitive project

     Share

  • Participación española en ChArMEx (The Chemistry-Aerosol Mediterranean Experiment) ChArMEx-SP2

     Comeron Tejero, Adolfo; Baldasano Recio, Jose M.; Rocadenbosch Burillo, Francisco; Muñoz Porcar, Constantino; Sicard, Michaël
    Competitive project

     Share

  • Power budget and performance assessment for the RSLAB multispectral elastic/raman lidar system

     Kumar, Dhiraj; Lange, Diego; Rocadenbosch Burillo, Francisco; Tomas, Sergio; Sicard, Michaël; Muñoz Porcar, Constantino; Comeron Tejero, Adolfo
    IEEE International Geoscience and Remote Sensing Symposium
    p. 4703-4706
    DOI: 10.1109/IGARSS.2012.6350415
    Presentation's date: 2012
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    The need of a multi-spectral lidar has widely been experienced in last few years with a view to invert the optical and microphysical properties of aerosols and their impact on the climate change. As a part of the EARLINET-GALION objectives, a joint effort has already been made by the European Aerosol Research Lidar Network (EARLINET). The EARLINET advanced standard of 3+2-channel configuration for lidar instruments (3+2 standing for 3 elastic channels and 2 respective Raman channels) enables retrieval of aerosol microphysical properties. An overview of the new RSLAB 3+2+1 multispectral lidar system, therefore, is presented in terms of power budget estimation for all the reception channels and overall system performance, that is, signal-to-noise ratio (SNR) and maximum sounding range achieved.

  • CONTRIBUTION OF ELASTIC-BACKSCATTER LIDARS TO WIND FIELD RETRIEVAL AND ATMOSPHERIC BOUNDARY LAYER MONITORING

     Tomas Martinez, Sergio
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

     Share Reference managers Reference managers Open in new window

  • Optimised data-gluing method for mixed analog/photon-counting lidar signals

     Lange, Diego; Kumar, Dhiraj; Rocadenbosch Burillo, Francisco; Sicard, Michaël; Comeron Tejero, Adolfo
    Workshop on Lidar Measurements in Latin America
    p. 4-6
    Presentation's date: 2011-09-26
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    In atmospheric LIDAR (Light Detection and Ranging) remote sensing, the dynamic range of the return power signals can span up to five orders of magnitude. Modern acquisition systems such as those based on LicelTM transient recorders combine a dual acquisition mode in which the return signal is recorded simultaneously in both analog (analog-to-digital (AD) conversion) and photon-counting (PC) modes. Although both data records can be analyzed separately, their combination obtained through gluing gives the advantage of the high linearity of the AD conversion for high light-level signals (especially in the near range) and the high sensitivity of the PC mode for low light-level signals (in the far range). Recently, eruptions of volcanoes such as Eyjafjalla (Iceland) in 2010, Grímsvötn (Iceland Puyehue (Argentina) Nabro (Eritrea) and Mount Lokon (Indonesia) in 2011 have yielded emergency situations with a strong economical cost due to human evacuation and/or air traffic interruption. Volcanic aerosols are first injected in the troposphere and often reach the stratosphere where they can reside for several years. The mixed analog/photo-counting acquisition approach is particularly suitable for the detection of volcanic aerosols in both the troposphere (near/mid range) and the stratosphere (far range). In this line, a case study showing volcanic aerosols from the Nabro volcano (Eritrea, 2011) in the stratosphere and simultaneously Saharan dust in the troposphere over the multi-spectral Barcelona lidar station during the period 27 June ¿ 1 July 2011 is presented. The benefits of the proposed gluing technique will be shown through the comparison of analog, PC, and glued backscatter-coefficient time series. Existing gluing algorithms solve the fitting coefficients by matching both analog and PC data over a predefined spatial range (or equivalently, over a predefined upper and lower counting rate) depending on which kind of photodetector (usually a photomultiplier) is being used. In this work, an enhanced data-gluing formulation is presented. The method automatically finds the spatial range where both analog and PC signals are more similar based on Euclidian distance minimization over piece-wise range intervals along the whole acquisition spatial range.

  • Wind speed and direction measurements with a backscatter lidar using the auto-correlation contour analysis

     Tomás, Sergio; Sicard, Michaël; Rocadenbosch Burillo, Francisco
    Remote Sensing for Agriculture, Ecosystems, and Hydrology
    p. 817702-1-817702-13
    DOI: 10.1117/12.898096
    Presentation's date: 2011-09
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    A method to estimate wind velocity using the backscatter lidar signals of transported aerosol particles is presented. The lidar signal is correlated along range and time dimensions for each line of sight in which the lidar is pointing. The method is based on the analysis of contours of these range-time auto-correlation functions. This analysis obtains ellipse curve parameters which are related to the radial velocity and to the square wind speed, locally retrieved for a given line of sight. The combination of data from several angular positions enables the wind direction retrieval. Two possible implementations of the method are considered and tested with an actual measurement with the lidar of the Universitat Politècnica de Catalunya (UPC).

  • Wind speed and turbulence estimation with a backscatter lidar at a single line of sight

     Tomás, Sergio; Sicard, Michaël; Rocadenbosch Burillo, Francisco
    Remote Sensing for Agriculture, Ecosystems, and Hydrology
    p. 817703-1-817703-8
    DOI: 10.1117/12.898106
    Presentation's date: 2011-09
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Access to the full text
    Six-channel polychromator design and implementation for the UPC elastic/Raman LIDAR  Open access

     Kumar, Dhiraj; Rocadenbosch Burillo, Francisco; Sicard, Michaël; Comeron Tejero, Adolfo; Lange, Diego; Muñoz, Constantino; Tomás, Sergio; Gregorio, Eduard
    SPIE International Symposium - Remote Sensing Europe
    p. 81820W-1-81820W-10
    DOI: 10.1117/12.896305
    Presentation's date: 2011-09-21
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    A 6-channel dichroic-based polychromator is presented as the spectrally selective unit for the U.P.C. elastic/Raman lidar. Light emission is made at 355-nm (ultraviolet, UV), 532-nm (visible, VIS) and 1064-nm (near infrared, NIR) wavelengths. In reception, the polychromator is the spectral separation unit that separates the laser backscattered composite return into 3 elastic (355, 532, 1064-nm wavelengths) and 3 Raman channels (386.7, 607.4 and 407.5-nm (water-vapor) wavelengths). The polychromator houses photo-multiplier tubes (PMT) for all the channels except for the NIR one, which is avalanche photodiode (APD) based. The optomechanical design uses 1-inch optics and Eurorack standards. The APD-based receiver uses a XY-axis translation/elevation micro-positioning stage due to its comparatively small active area and motorised neutral density filters are used in all PMT-based channels to avoid detector saturation. The design has been specially optimized to provide homogeneous spatial light distribution onto the photodetectors and good mechanical repeatability. All channels are acquired in mixed analog and photon-counting mode using Licel® transient recorders, which are controlled by means of a user friendly LabVIEW TM interface. The paper focuses on the main polychromator optical design parameters, that is, light collimation trade-offs, end-to-end transmissivity, net channel responsivity, light distribution and spot size onto the photodetectors. The polychromator along with the rest of the U.P.C. lidar system has successfully been tested during a recent lidar system intercomparison campaign carried out in Madrid (Spain) during Oct. 2010.

  • Q-00002

     Tiana Alsina, Jordi; Bermejo Sanchez, Sergio; Vall-llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano Jose; Rocadenbosch Burillo, Francisco
    Competitive project

     Share

  • Aerosols, Clouds and Trace Gases Research Infrastructure Network

     Rocadenbosch Burillo, Francisco; Sicard, Michaël; Muñoz Porcar, Constantino; Garcia Vizcaino, David; Rodriguez Gomez, Alejandro Antonio; Lange Vega, Diego; Kumar, Dhiraj; Tiana Alsina, Jordi; Baldasano Recio, Jose M.; Barragan Cuesta, Ruben; Banks, Robert Franklin; Comeron Tejero, Adolfo
    Competitive project

     Share

  • Airborne spray drift measurement using passive collectors and lidar Systems

     Gregorio, Eduard; Solanelles, Francesc; Rocadenbosch Burillo, Francisco; Rosell Amigo, Juan Ramon; Sanz, Ricardo
    Remote Sensing for Agriculture, Ecosystems, and Hydrology
    p. 81741I-81741I-12
    DOI: 10.1117/12.903723
    Presentation's date: 2011
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    Minimization of the risk associated with spray applications requires a proper understanding of the spray drift phenomenon. This fact has led to the development of several techniques to measure the deposition on horizontal surfaces as well as the airborne spray profiles. Assessment of airborne spray drift is particularly difficult because this phenomenon is subject to variable micrometeorological conditions. However the monitoring of airborne drift has a great importance since it can be carried over long distances. This paper reviews main sampling techniques currently used to asses the airborne spray drift, based on passive collectors and tracers. Theoretical principles that determine the efficiency of passive samplers are studied as well as the performance of different types of tracers. On the other hand, this paper shows new airborne spray drift assessment techniques based on lidar technology, reviewing its principle of operation as well as its practical application in several spray drift trials. It is concluded that the lidar technique has significant advantages over conventional methods, especially in terms of time consumption and monitoring capabilities. However, the future adoption of lidar technology for airborne spray drift studies will be subjected to the development of lidar instruments really adapted to this application.

  • Data processing and Inversion interfacing the UPC elastic-Raman LIDAR system

     Md. Reba, Mohd Nadzri
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Seguimiento de las cenizas del Eyjafjalla sobre la Península Ibérica por la red de lidares hispano-portuguesa SPALINET

     Sicard, Michaël; Kumar, Dhiraj; Tomas Martinez, Sergio; Comeron Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Guerrero-Rascado, Juan Luis; Molero, Francisco; Preissler, J.; Silva, A.M.; Navas Guzmán, Francisco; Pujadas Cordero, Manuel; Bravo Aranda, J. A.; Alados Arboledas, Lucas; Wagner, F.; Bolarín, Jose Miguel; Requena, Alberto
    Congreso Nacional del Medio Ambiente
    p. 10-17
    Presentation's date: 2010-11-22
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    La reciente erupción del volcán Eyjafjallajökull es una muestra – extremada, pero de probabilidad no despreciable – de la influencia que los aerosoles atmosféricos pueden tener en la vida diaria de miles de personas y en la economía mundial. Este acontecimiento ha sido seguido desde tierra por – entre otros instrumentos – radares láser (lidares) que han permitido determinar la evolución en el espacio y el tiempo de las nubes de ceniza proyectadas por el volcán y han proporcionado información de valor a las agencias meteorológicas y a las administraciones responsables de la seguridad de la navegación aérea.

  • Access to the full text
    Atmospheric boundary-layer height estimation by adaptive Kalman filtering of lidar data  Open access

     Tomas Martinez, Sergio; Rocadenbosch Burillo, Francisco; Sicard, Michaël
    Remote Sensing for Agriculture, Ecosystems, and Hydrology
    p. 782704-1-782704-10
    DOI: 10.1117/12.866477
    Presentation's date: 2010-09-20
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    A solution based on a Kalman filter to trace the evolution of the atmospheric boundary layer (ABL) sensed by an elastic backscatter lidar is presented. An erf-like profile is used to model the mixing layer top and the entrainment zone thickness. The extended Kalman filter (EKF) enables to retrieve and track the ABL parameters based on simplified statistics of the ABL dynamics and of the observation noise present in the lidar signal. This adaptive feature permits to analyze atmospheric scenes with low signal-to-noise ratios without need to resort to long time averages or rangesmoothing techniques, as well as to pave the way for an automated detection method. First EKF results based on synthetic lidar profiles are presented and compared with a typical least-squares inversion for different SNR scenarios.

  • Access to the full text
    Lidar ratio estimation using a two-point calibration in an turbid layer aloft  Open access

     Rocadenbosch Burillo, Francisco; Md. Reba, Mohd Nadzri; Sicard, Michaël; Tomas, Sergio; Kumar, Dhiraj
    International Laser Radar Conference
    p. 59-62
    Presentation's date: 2010-07
    Presentation of work at congresses

    Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

  • Access to the full text
    On the lidar ratio estimation from the synergy between aeronet sun-photometer data and elastic lidar inversion  Open access

     Md. Reba, Mohd Nadzri; Rocadenbosch Burillo, Francisco; Sicard, Michaël; Kumar, Dhiraj; Tomas, Sergio
    International Laser Radar Conference
    p. 1102-1105
    Presentation's date: 2010-07
    Presentation of work at congresses

    Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

  • Access to the full text
    Representativeness of aerosol measurements: EARLINET-CALIPSO correlative study  Open access

     Pappalardo, Gelsomina; Mona, Lucia; Hiebsch, Anja; Wandinger, Ulla; Apituley, Arnoud; Linné, Holger; Alados Arboledas, Lucas; Balis, Dimitris; Comeron Tejero, Adolfo; Freudenthaler, Volker; Giannakaki, E.; Giunta, Aldo; Guerrero, J. L.; Madonna, Fabio; Mamouri, R.E.; Mattis, I.; Papayannis, Alexander; Pujadas Cordero, Manuel; Rocadenbosch Burillo, Francisco; Spinelli, N.; Wang, Xuan; Wiegner, M.
    International Laser Radar Conference
    p. 883-886
    Presentation's date: 2010-07
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    The high variability of tropospheric aerosols, both in space and time, is the main cause of the high uncertainty about radiative forcing related to tropospheric aerosols and their interaction with clouds. Because of the lack of high resolution aerosol global vertical profiles, the vertical mixing has not been considered so far in studies of spatial and temporal variability. The CALIPSO mission provides the first opportunity to investigate the 4-D aerosol and cloud fields in detail. However, because of the CALIOP small footprint and the revisit time of 16 days, correlative ground-based lidar observations are necessary in order to investigate the representativeness of these satellite observations. EARLINET, the European Aerosol Research Lidar Network, started correlative measurements for CALIPSO in June 2006, right after the CALIPSO launch. An integrated study of CALIPSO and EARLINET correlative measurements opens new possibilities for spatial (both horizontal and vertical) and temporal representativeness investigation of polar-orbit satellite measurements also in terms of revisit time.

  • Access to the full text
    Long-term aerosol and cloud database from correlative EARLINET-CALIPSO observations  Open access

     Hiebsch, Anja; Wandinger, Ulla; Ansmann, Albert; Pappalardo, Gelsomina; Madonna, Fabio; D'Amico, Giuseppe; Mona, Lucia; Apituley, Arnoud; Giunta, Aldo; Linné, Holger; Mattis, I.; Serikov, I.; Wilson, K.; Alados Arboledas, Lucas; Navas Guzmán, Francisco; Balis, Dimitris; De Tomasi, Ferdinando; Giannakaki, E.; Chaikovsky, Anatoli; Freudenthaler, Volker; Wiegner, M.; Schnell, Franziska; Stoyanov, Dimitar Vassilev; Grigorov, I. Ivan; Rizi, Vicenzo; Iarlori, M.; Molero, Francisco; Mamouri, R.E.; Papayannis, Alexander; Pujadas Cordero, Manuel; Pietruczuk, Aleksander; Rocadenbosch Burillo, Francisco; Perrone, Maria-Rita; Tomás Martinez, Sergio; Kumar, Dhiraj; Spinelli, N.; Wang, Xuan
    International Laser Radar Conference
    p. 1241-1244
    Presentation's date: 2010-07-05
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    The European Aerosol Research Lidar Network, EARLINET, performs correlative observations during CALIPSO overpasses based on a sophisticated measurement strategy since June 2006. Within a dedicated activity supported by the European Space Agency (ESA), sixteen EARLINET stations contributed about 1500 measurements during an intensive observational period from May 2008 to October 2009. From these measurements, we establish a long-term aerosol and cloud database of correlative EARLINET-CALIPSO observations. This database shall provide a basis for homogenizing long-term space-borne observations conducted with different lidar instruments operating at different wavelengths on various platforms over the next decade(s). The database is also used to study the quality and representativeness of satellite lidar cross sections along an orbit against long-term lidar network observations on a continental scale.

  • Access to the full text
    Monitoring of the Eyjafjalla volcanic plume at four lidar stations over the Iberian Peninsula: 6 to 8 May 2010  Open access

     Guerrero Rascado, Juan Luis; Sicard, Michaël; Navas Guzmán, Francisco; Preissler, J.; Kumar, Dhiraj; Bravo Aranda, J. A.; Molero, Francisco; Tomás, S.; Md. Reba, Mohd Nadzri; Alados Arboledas, Lucas; Comeron Tejero, Adolfo; Pujadas Cordero, Manuel; Rocadenbosch Burillo, Francisco; Silva, A. M.; Wagner, F.
    Reunión Española de Ciencia y Tecnología de Aerosoles
    p. 15
    Presentation's date: 2010-06
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    Lidar measurements were performed in the framework of the EARLINET and SPALINET networks during the eruption of Eyjafjalla volcano (Iceland) since 14 April 2010. The profiles of the aerosol optical properties, namely backscatter and extinction coefficients, lidar ratio and Angström exponent, show the presence of volcanic aerosol layers over all SPALINET stations since 5 May. The volcanic particles were monitored both within the planetary boundary layer and in decoupled layers up to 8 km agl over the Iberian Peninsula. This is the first time that the spatial and temporal distributions of volcanic aerosols have been studied with active remote sensing techniques over the Iberian Peninsula.

  • Dispersion and evolution of the Eyjafjallajökull ash plume over Europe: vertically resolved measurements with the European LIDAR network EARLINET

     Pappalardo, Gelsomina; Mona, Lucia; Alados Arboledas, Lucas; Amodeo, Aldo; Ansmann, Albert; Balis, Dimitris; Apituley, Arnoud; Bellantone, V.; Böckmann, C.; Bravo Aranda, J. A.; Burlizzi, P.; Chaikovsky, Anatoli; Comeron Tejero, Adolfo; Cuesta, J.; D'Amico, Giuseppe; De Graaf, M.; De Tomasi, Ferdinando; Donovan, D.; Freudenthaler, Volker; Gasteiger, J.; Gausa, Michael; Giannakaki, E.; Giehl, H.; Giunta, Aldo; Grigorov, I. Ivan; Gross, S.; Gustavsson, O.; Haeffelin, M.; Heese, B.; Hiebsch, Anja; Iarlori, M.; Kinne, S.; Kolarov, George V.; Linné, Holger; Mamouri, R.E.; Madonna, Fabio; Mattis, I.; Mitev, V.; Molero, Francisco; Müller, D.; Navas Guzmán, Francisco; Nemuc, A.; Nicolae, D.; Osterloh, L.; Persson, R.; Pietruczuk, Aleksander; Podgorsky, J.; Preissler, J.; Pujadas, M.; Putaud, J. P.; Ravetta, F.; Rizi, Vicenzo; Rocadenbosch Burillo, Francisco; Schmidt, J.; Papayannis, Alexander; Perrone, Maria-Rita; Pisani, G.; Seifert, Patric; Serikov, I.; Sicard, Michaël; Silva, A. M.; Simeonov, Valentin; Spinelli, N.; Stebel, K.; Stoyanov, Dimitar Vassilev; Tafuro, A.; Tesche, M.; Trickl, Thomas; Wagner, F.; Wandinger, Ulla; Wang, Xuan; Wiegner, M.; Wilson, K.
    European Geosciences Union General Assembly
    Presentation's date: 2010-05
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Best IEEE Reviewer

     Rocadenbosch Burillo, Francisco
    Award or recognition

     Share

  • LIDARES ELASTICO-RAMAN: Integracion,procesado de datos y explotacion

     Comeron Tejero, Adolfo; Muñoz Porcar, Constantino; Sicard, Michaël; Garcia Vizcaino, David; Tomas Martinez, Sergio; Kumar, Dhiraj; Lange Vega, Diego; Rocadenbosch Burillo, Francisco
    Competitive project

     Share

  • Unmanned unattended LIDAR (radar laser) station

     Comeron Tejero, Adolfo; Muñoz Porcar, Constantino; Sicard, Michaël; Garcia Vizcaino, David; Tiana Alsina, Jordi; Rocadenbosch Burillo, Francisco
    Competitive project

     Share

  • Participación Española en Charmex (The Chemistry-Aerosol Mediterranean Experiment)

     Rocadenbosch Burillo, Francisco; Baldasano Recio, Jose M.; Comeron Tejero, Adolfo; Sicard, Michaël
    Competitive project

     Share

  • Lidar measurements of wind velocity fields

     Comeron Tejero, Adolfo; Muñoz Porcar, Constantino; Rocadenbosch Burillo, Francisco; Rodriguez Gomez, Alejandro Antonio; Sicard, Michaël; Tomas Martinez, Sergio
    Date of publication: 2010
    Book chapter

     Share Reference managers Reference managers Open in new window

  • Access to the full text
    SPALINET: The Spanish and Portuguese aerosol lidar network  Open access

     Sicard, Michaël; Pujadas Cordero, Manuel; Alados Arboledas, Lucas; Pedros, Roberto; Díaz, Juan Pedro; Córdoba Jabonero, Carmen; Requena, Alberto; Comeron Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Rodrigues, J.; Moreno, J. M.; Wagner, F.
    Workshop on Lidar Measurements in Latin America
    Presentation's date: 2009-12
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    To extend and reinforce the action of the EARLINET-ASOS project, a network of Spanish and Portuguese aerosol lidars (SPALINET) was created. In the first three years of the project six out of the ten systems have been successfully intercompared, seven elastic algorithms have also been validated and six Raman algorithms are currently being validated. Now the network focuses on future scientific objectives aiming at performing coordinated measurements.

  • Study case during DAMOCLES campaign ¿ 29th June 2006: lidar, in situ measurements on board aircraft and sunphotometer

     Guerrero-Rascado, José Luis; Andrey, J.; Sicard, Michaël; Comeron Tejero, Adolfo; Pujadas Cordero, Manuel; Molero, Francisco; Rocadenbosch Burillo, Francisco; Pedrós Esteban, Roberto; Serrano-Vargas, O.; Gil Ojeda, Manuel; Alados Arboledas, Lucas
    Workshop on Optoelectronic Techniques and Environmental Monitoring
    p. 44-47
    Presentation's date: 2009-10
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Access to the full text
    Aerosol stratification characterization of an astronomical site by means of a backscatter lidar at the Roque de los Muchachos Observatory  Open access

     Sicard, Michaël; Tomas Martinez, Sergio; Md. Reba, Mohd Nadzri; Comeron Tejero, Adolfo; Batet Torrell, Oscar; Muñoz Porcar, Constantino; Rodriguez Gomez, Alejandro Antonio; Rocadenbosch Burillo, Francisco; Muñoz Tuñón, Casiana; Jiménez Fuensalida, Jesús
    Remote Sensing for Agriculture, Ecosystems, and Hydrology
    p. 1-10
    DOI: 10.1117/12.833707
    Presentation's date: 2009-09-01
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    The Roque de los Muchachos Observatory, located on the island of La Palma in the Canary Islands, is home of many astronomical facilities. In the context of the Extremely Large Telescope Design Study, an intensive lidar campaign was performed in the ORM near the Jacobus Kapteyn Telescope (17°52’41.2” W, 28°45’40.1” N, 2395 m asl) between 26th May and 14th June 2008. The goal of the campaign was to characterize the atmosphere in terms of planetary boundary layer height and aerosol stratification vs. synoptic conditions. As a by-product an estimate of the aerosol optical thickness was also obtained and compared to the total atmospheric extinction coefficient measured by the Carlsberg Meridian Telescope.

  • GRUP DE FOTONICA

     Rodriguez Gomez, Alejandro Antonio; Tomas Martinez, Sergio; Canal Bienzobas, Fernando; Torner Sabata, Lluis; Kartashov, Yaroslav V.; Belmonte Molina, Aniceto; Garcia Mateos, Jorge; Muñoz Porcar, Constantino; Garcia Vizcaino, David; Dios Otin, Victor Federico; Rocadenbosch Burillo, Francisco; Barrios Porras, Ricardo Alfonso; Hernandez Marco, Jordi; Sicard, Michaël; Batet Torrell, Oscar; Comeron Tejero, Adolfo
    Competitive project

     Share

  • INTERCOMPARACIÓN DE LIDARES (RADAR LASER) ESPAÑOLES AVANZADOS -3A

     Rocadenbosch Burillo, Francisco; Comeron Tejero, Adolfo; Sicard, Michaël
    Competitive project

     Share

  • SPALINET: The spanish and portuguese aerosol lidar network

     Sicard, Michaël; Pujadas Cordero, Manuel; Alados Arboledas, Lucas; Martínez Lozano, José Antonio; Díaz, Juan Pedro; Gil Ojeda, Manuel; Requena, Alberto; Moreno, J. M.; Rodrigues, Jose António; Wagner, F.; Comeron Tejero, Adolfo; Rocadenbosch Burillo, Francisco
    Reunión Española de Ciencia y Tecnología de Aerosoles
    Presentation's date: 2009-06
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Access to the full text
    The Earlinet contribution to the EarthCare mission.  Open access

     Pappalardo, Gelsomina; Mona, Lucia; Wandinger, Ulla; Mattis, I.; Apituley, Arnoud; Amodeo, Aldo; Hiebsch, Anja; Ansmann, Albert; Linné, Holger; Alados Arboledas, Lucas; Balis, Dimitris; Chaikovsky, Anatoli; D'Amico, Giuseppe; De Tomasi, Ferdinando; Freudenthaler, Volker; Giannakaki, E.; Giunta, Aldo; Grigorov, I. Ivan; Iarlori, M.; Madonna, Fabio; Mamouri, R.E.; Papayannis, Alexander; Pietruczuk, Aleksander; Pujadas Cordero, Manuel; Rizi, Vicenzo; Rocadenbosch Burillo, Francisco; Spinelli, N.; Wang, Xuan; Wiegner, M.
    Earth-Care Workshop
    p. 91-97
    Presentation's date: 2009-06
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    Postprint (author’s final draft)

  • Long-term aerosol and cloud database from space-borne lidar and ground-based lidar network observations

     Wandinger, Ulla; Pappalardo, Gelsomina; Hiebsch, Anja; Madonna, Fabio; Mona, Lucia; Ansmann, Albert; Linné, Holger; Alados Arboledas, Lucas; Mattis, I.; Apituley, Arnoud; Balis, Dimitris; Chaikovsky, Anatoli; D'Amico, Giuseppe; Freudenthaler, Volker; Molero, Francisco; Giannakaki, E.; Giunta, Aldo; Grigorov, I. Ivan; Iarlori, M.; Mamouri, R.E.; De Tomasi, Ferdinando; Pietruczuk, Aleksander; Papayannis, Alexander; Rizi, Vicenzo; Rocadenbosch Burillo, Francisco; Schnell, Franziska; Spinelli, N.; Wang, Xuan; Wiegner, M.
    Earth-Care Workshop
    p. 85-90
    Presentation's date: 2009-06
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    In June 2006, the satellite-borne lidar CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization) began its observations onboard CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations; Winker et al., 2007). This date is regarded the starting point of a unique long-term, global, 4-dimensional aerosol and cloud data set. The forthcoming missions ADM-Aeolus (Atmospheric Dynamics Mission; Stoffelen et al., 2005; Ansmann et al., 2006) of the European Space Agency ESA and EarthCARE (Earth Clouds, Aerosols, and Radiation Explorer) of ESA and the Japan Aerospace Exploration Agency JAXA (ESA, 2004), with their lidar instruments ALADIN (Atmospheric Laser Doppler Lidar Instrument) and ATLID (Atmospheric Lidar), respectively, will continue such kind of observations. It is expected that the long-term data set gained in this way will substantially improve our knowledge on the role of aerosols and clouds in the Earth's climate system.

  • Aerosol vertical profiles from lidar and airborne measurements during DAMOCLES campaign

     Guerrero Rascado, Juan Luis; Andrey, J.; Molero, Francisco; Sicard, Michaël; Comeron Tejero, Adolfo; Pujadas Cordero, Manuel; Rocadenbosch Burillo, Francisco; Pedrós Esteban, Roberto; Serrano-Vargas, O.; Gil Ojeda, Mamuel; Alados Arboledas, Lucas
    Reunión Española de Ciencia y Tecnología de Aerosoles
    Presentation's date: 2009
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • SPALINET: Red Española de lidares de aerosoles

     Sicard, Michaël; Rocadenbosch Burillo, Francisco; Muñoz, C.; Tomas, S.; Comeron Tejero, Adolfo; Pujadas Cordero, Manuel; Alados Arboledas, Lucas; Molero, Francisco; Guerrero Ruiz, A.; Martínez Lozano, José Antonio; Pedrós Esteban, Roberto; Diaz Gonzalez, J. P.; Exposito, Francisco Javier; Gil Ojeda, Manuel; Requena, Alberto; Córdoba Jabonero, Carmen; Bolarín, Jose Miguel; Moreno, J. M.
    Congreso Nacional del Medio Ambiente
    p. 8-18
    Presentation's date: 2008-12
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Access to the full text
    Overview of wind lidar techniques and current related developments at the Technical University of Catalonia  Open access

     Tomas Martinez, Sergio; Muñoz Porcar, Constantino; Sicard, Michaël; Rocadenbosch Burillo, Francisco; Rodriguez Gomez, Alejandro Antonio; Comeron Tejero, Adolfo
    IEEE International Geoscience & Remote Sensing Symposium
    p. 1120-1123
    Presentation's date: 2008-07
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    The Lidar group in the Technical University of Catalonia is actively working in wind lidar techniques. An extensive review of such techniques is presented. A special emphasis is made on the direct Doppler technique and the direct motion technique with a lines-of-sight scanning pattern. Current developments are also mentioned.

  • Access to the full text
    EARLINET approach to optimisation of individual network instruments with the aim of homogenisation of aerosol data products and increased data coverage  Open access

     Apituley, Arnoud; Freudenthaler, Volker; Comeron Tejero, Adolfo; Rocadenbosch Burillo, Francisco
    IEEE International Geoscience and Remote Sensing Symposium
    p. 414-417
    Presentation's date: 2008-07-08
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    The European Aerosol Research LIdar NETwork (EARLINET) is an aerosol lidar network on a continental scale. EARLINET is now a leading network in qualitycontrolled quantitative aerosol profiling performing a schedule of routine measurements and presently consists of 28 stations distributed over Europe. The construction of an un-biased spatio-temporal database of vertical profiles of aerosol optical properties on a regional scale for climate and air quality research is the main objective of EARLINET and is accomplished through application of Raman lidars. One of the tasks in the EC-funded project EARLINET-ASOS is to optimize individual instruments with the aim of homogenization of aerosol data products over the network and increased data coverage by automation. This task is approached by selection of optimal solutions existing in the pool of individual stations. This is done for components, subsystems as well as for system integration. In system integration emphasis lies on automation to reduce the amount of manpower needed, to improve temporal coverage, and to make performance independent from individual operators. The procedure to perform these tasks is outlined and the set of tools enabling the assessment of performance under development is described.

  • Spatial Resolution Enhancement Of Smos Data: A Combined Fourier Wiener Approach

     Piles Guillem, Maria; Camps Carmona, Adriano Jose; Vall-llossera Ferran, Mercedes Magdalena; Talone, Marco; Rocadenbosch Burillo, Francisco
    IEEE International Geoscience & Remote Sensing Symposium
    p. 1-2
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • SPALINET: the Spanish lidar network. Results from the first year: system intercomparison

     Sicard, Michaël; Comeron Tejero, Adolfo; Molero, Francisco; Guerrero, JL; Pedrós, R; Expósito, FJ; Córdoba, C; Rocadenbosch Burillo, Francisco; Pujadas, M; Alados, L; Martinez, JA [et al]
    International Laser Radar Conference
    p. 738-741
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Comparison between the Kalman and the non-linear least-squares estimators in low signal-to-noise ratio lidar inversion

     Rocadenbosch Burillo, Francisco; Sicard, Michaël; Comeron Tejero, Adolfo; Md. Reba, Mohd Nadzri
    IEEE International Geoscience & Remote Sensing Symposium
    p. 1083-1086
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Planetary boundary layer height and wind field characterization by means of a lidar at the Teide Observatory in the Canary Islands

     Sicard, Michaël; Tomas Martinez, Sergio; Comeron Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Rodriguez Gomez, Alejandro Antonio; Muñoz Porcar, Constantino; Batet Torrell, Oscar
    IEEE International Geoscience & Remote Sensing Symposium
    p. 915-918
    DOI: 10.1109/GENSIPS.2009.5174336
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window