LOA - Laboratoire d'Optique Atmosphèrique - UMR 8518

France Centre de recherche public
Accréditation CIR
Contact principal
Téléphone : 33(0)3 20 43 45 32
Mail : direction-loa@univ-lille1.fr
Adresse :
Bât. P5
59655 Villeneuve d'Ascq
France
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Description
(Extrait du site web)
Activité Générale :

L'optique atmosphérique cherche à modéliser la propagation à travers l'atmosphère de la lumière visible reçue du soleil et de la lumière infrarouge émise par l'ensemble des surfaces et de l'atmosphère terrestres. Les travaux menés au LOA dans ce domaine s'insèrent dans l'étude globale du climat.

Un premier objectif est de quantifier le rôle de ce rayonnement visible et infrarouge dans les échanges énergétiques de la planète, en particulier de préciser le rôle des nuages dans le bilan radiatif de la terre dont ils constituent un facteur essentiel.

Un second axe de recherche porte sur la caractérisation à l'échelle du globe de différents paramètres qui sont en relation directe avec l'évolution climatique (nuages, aérosols, surfaces), en utilisant principalement l'observation satellitaire.
Les travaux menés dans ce contexte mettent en oeuvre:

* La conception de logiciels permettant de simuler le transfert du rayonnement, à l'aide de modèles du système terre - atmosphère.
* L'analyse d'observations acquises par les capteurs satellitaires existants, le plus souvent sous forme d'images traitées sur ordinateur, et la conception d'expériences satellitaires nouvelles.
* La réalisation de campagnes d'observation de terrain, utilisant des appareillages développés par le laboratoire, mis en oeuvre au sol ou à partir d'avions ou de ballons stratosphériques, et destinés à valider les modèles ou à mettre en évidence les processus atmosphériques.

Le LOA est une unité Mixte de Recherches (UMR/CNRS 8518). Il fait partie de la Fédération de Recherches (FR1818) Milieux naturels et anthropisé Flux et dynamique.

Quelques documents de Laboratoire d'Optique Atmosphèrique
Production regimes in the northeast Atlantic study based on Sea viewing Wide Field of view Sensor SeaWiFS chlorophyll and ocean general circulation model mixed layer depth
2005
Auteurs : Jean-Michel André, Eyal HEIFETZ, Yoav Lehahn, Hubert Loisel, Marina Lévy et Laurent Mémery
Pas de résumé disponible
Source : HAL  

Previsibility of mineral dust concentrations: The CHIMERE-DUST forecast during the first AMMA experiment dry season
2009
Auteurs : Isabelle Chiapello, Laurent Menut et Cyril Moulin
Masquer le résumé
Abstract. The predictability of Northern Africa dust events is assessed using daily numerical forecast simulations for the next three days. The dust concentration fields, modeled with the CHIMERE-DUST model, were first evaluated by comparison with both AERONET surface data and OMI and SEVIRI satellite measurements. The accuracy and spread between measurements and simulations are discussed for the first short observation period of the AMMA experiment in Western Africa, between January and March 2006. The predictability of dust events was then estimated by comparing model results for different leads in a forecast mode. The model performance was evaluated with respect to its capability to forecast the surface wind speed, which is the key process for dust emission, and the transport of mineral dust near source regions and towards remote areas. It is shown that emissions forecast can vary up to 80% (close to the sources) but that the variability on forecasted dust concentrations and optical thicknesses do not exceed 40% and 20%.
Keywords :
Source : HAL  

Global and regional Earth-system monitoring using satellite and in-situ data
GEMS
2005 - 2009

Sujets :
Earth Sciences, Environmental Protection, Meteorology, Aerospace Technology
Participants :
EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS UNITED KINGDOM
EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS
Other

ECMWF Shinfield Park
UNITED KINGDOM
COMMISSARIAT À L'ENERGIE ATOMIQUE FRANCE
COMMISSARIAT À L'ENERGIE ATOMIQUE
Research

LABORATOIRE DES SCIENCES DU CLIMAT ET DE L'ENVIRONMENT JOINT RESEARCH UNIT CEA-CNRS 1572' 31/33 rue de la Federation
FRANCE
IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE UNITED KINGDOM
IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE
Education

EPIDEMIOLOGY & PUBLIC HEALTH, DIVISION OF PRIMARY CARE & POPULATION HEALTH SCIENCES Exhibition Road
UNITED KINGDOM
MAX PLANCK GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V. DEUTSCHLAND
MAX PLANCK GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V.
Other,Research

MAX-PLANCK-INSTITUT FÜR METEOROLOGIE Postfach 101062 Hofgartenstrasse 8
DEUTSCHLAND
ROYAL NETHERLANDS METEOROLOGICAL INSTITUTE NEDERLAND
ROYAL NETHERLANDS METEOROLOGICAL INSTITUTE
Other

DEPARTMENT OF CLIMATE RESEARCH AND SEISMOLOGY PO Box 201 Wilhlminalaan 10
NEDERLAND
INSTITUT D'AERONOMIE SPATIALE DE BELGIQUE BELGIQUE-BELGIË
INSTITUT D'AERONOMIE SPATIALE DE BELGIQUE
Research

IASB/BIRA 3 Avenue Circulaire
BELGIQUE-BELGIË
FINNISH METEOROLOGICAL INSTITUTE SUOMI/FINLAND
FINNISH METEOROLOGICAL INSTITUTE
Research

RESEARCH DEPARTMENT PO Box 503 Vuorikatu 24
SUOMI/FINLAND
DANISH METEOROLOGICAL INSTITUTE DANMARK
DANISH METEOROLOGICAL INSTITUTE
Other

METEOROLOGICAL RESEARCH DIVISION / DANISH METEOROLOGICAL INSTITUTE Lyngbyvej 100
DANMARK
DEUTSCHER WETTERDIENST DEUTSCHLAND
DEUTSCHER WETTERDIENST
Other

METEOROLOGISCHES OBSERVATORIUM HOHENPEISSENBERG (MOHP) Postfach 10 04 65 Kaiserleistrasse 29/35
DEUTSCHLAND
UNIVERSITY OF BREMEN DEUTSCHLAND
UNIVERSITY OF BREMEN
Education

UNIVERSITY OF BREMEN, DEP. OF PHYSICS (FBI), INST. OF ENVIRON. PHYSICS AND REMOTE SENSING (IUP/IFE) Postfach 330440 Bibliotheksstrasse
DEUTSCHLAND
UNIVERSITE PIERRE ET MARIE CURIE FRANCE
UNIVERSITE PIERRE ET MARIE CURIE
Education

SERVICE D'AÉRONOMIE - UPMC - TOUR 45-46 (BOITE 102) 4, Place Jussieu
FRANCE
NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS HELLAS
NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS
Education

DEPT. OF GEOGRAPHY AND CLIMATOLOGY, FACULTY OF GEOLOGY AND GEOENVIRONMENT, LAB. OF CLIMATOLOGY AND ATMOS. ENVIRON. Christou Lada 6
HELLAS
METEO-FRANCE, CENTRE NATIONAL DE RECHERCHES METEOROLOGIQUES FRANCE
METEO-FRANCE, CENTRE NATIONAL DE RECHERCHES METEOROLOGIQUES
Research

CENTRE NATIONAL DE RECHERCHES METEOROLOGIQUES Avenue Gaspard Coriolis, 42
FRANCE
NATIONAL UNIVERSITY OF IRELAND, GALWAY ÉIRE/IRELAND
NATIONAL UNIVERSITY OF IRELAND, GALWAY
Education

ENVIRONMENTAL CHANGE INSTITUTE University Road
ÉIRE/IRELAND
KONINKLIJK METEOROLOGISCH INSTITUUT - INSTITUT ROYAL METEOROLOGIQUE BELGIQUE-BELGIË
KONINKLIJK METEOROLOGISCH INSTITUUT - INSTITUT ROYAL METEOROLOGIQUE
Research

DEPARTMENT OF OBSERVATIONS Ringlaan 3
BELGIQUE-BELGIË
ARPA EMILIA-ROMAGNA ITALIA
ARPA EMILIA-ROMAGNA
Other

ARPA-SIM Via Po, 5
ITALIA
CONSIGLIO NAZIONALE DELLE RICERCHE ITALIA
CONSIGLIO NAZIONALE DELLE RICERCHE
Research

INSTITUTO DI SCIENZE DELL'ATMOSFERA E DEL CLIMA, ISAC-CNR' Piazzale Aldo Moro 7
ITALIA
METEOROLOGISK INSTITUTT NORGE
METEOROLOGISK INSTITUTT
Research

RESEARCH AND DEVELOPMENT DEPARTMENT, AIR POLLUTION SECTION Niels Henrik Abels vei 40
NORGE
RHENISH INSTITUTE FOR ENVIRONMENTAL RESEARCH AT THE UNIVERSITY OF COLOGNE DEUTSCHLAND
RHENISH INSTITUTE FOR ENVIRONMENTAL RESEARCH AT THE UNIVERSITY OF COLOGNE
Research

DATA ASSIMILATION RESEARCH GROUP Aachener Strasse 201 -209
DEUTSCHLAND
EUROPEAN COMMISSION, GENERAL DIRECTORATE JOINT RESEARCH CENTRE ITALIA
EUROPEAN COMMISSION, GENERAL DIRECTORATE JOINT RESEARCH CENTRE
Research

CLIMATE CHANGE UNIT OF THE INSTITUE FOR ENVIRONMENT AND SUSTAINABILITY Via E. Fermi, 1
ITALIA
INSTITUT NATIONAL DE L'ENVIRONNEMENT INDUSTRIEL ET RISQUES FRANCE
INSTITUT NATIONAL DE L'ENVIRONNEMENT INDUSTRIEL ET RISQUES
Research

CHRONIC RISKS DIVISION Parc Technologique Alata
FRANCE
CZECH HYDROMETEOROLOGICAL INSTITUTE CESKA REPUBLIKA
CZECH HYDROMETEOROLOGICAL INSTITUTE
Other

CZECH HYDROMETEOROLOGICAL INSTITUTE Na Sabatce 17
CESKA REPUBLIKA
ENVIRONMENTAL PROTECTION AGENCY IRELAND ÉIRE/IRELAND
ENVIRONMENTAL PROTECTION AGENCY IRELAND
Other

ERTDI PROGRAMME, ENVIRONMENTAL PROTECTION AGENCY IRELAND PO Box 3000 Johnstown Castle Estate
ÉIRE/IRELAND
MET OFFICE UNITED KINGDOM
MET OFFICE
Other

MET OFFICE HADLEY CENTRE FOR CLIMATE PREDICTION AND RESEARCH Fitzroy road
UNITED KINGDOM
POLISH INSTITUTE OF ENVIRONMENTAL PROTECTION POLSKA
POLISH INSTITUTE OF ENVIRONMENTAL PROTECTION

DEPARTMENT OF ENVIRONMENTAL POLICY - SECTION OF INTEGRATED MODELLING AIR POLLUTION MONITORING DIVISION Krucza 5/11
POLSKA
FORSCHUNGSZENTRUM JUELICH GMBH DEUTSCHLAND
FORSCHUNGSZENTRUM JUELICH GMBH

INSTITUTE OF CHEMISTRY AND DYNAMICS OF THE GEOSPHERE, TROPOSPHERE (ICG II)
DEUTSCHLAND
THE PROVOST, FELLOWS AND SCHOLARS OF THE COLLEGE OF THE HOLY AND UNDIVIDED TRINITY OF QUEEN ELIZABETH, NEAR DUBLIN (HEREINAFTER CALLED TCD) ÉIRE/IRELAND
THE PROVOST, FELLOWS AND SCHOLARS OF THE COLLEGE OF THE HOLY AND UNDIVIDED TRINITY OF QUEEN ELIZABETH, NEAR DUBLIN (HEREINAFTER CALLED TCD)

DEPARTMENT OF CIVIL STRUCTURAL & ENVIRONMENT ENGINEERING 2 College Green
ÉIRE/IRELAND
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE FRANCE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Research

LABORATOIRE D'OPTIQUE ATMOSPHERIQUE, UMR 8518' 2 rue des Canonniers
FRANCE
Laboratoire d'Optique Atmosphèrique
Laboratoire d'Optique Atmosphèrique


European Centre for Medium-Range Weather Forecasts
European Centre for Medium-Range Weather Forecasts


Danish Meteorological Institute
Danish Meteorological Institute


National Technical University of Athens
National Technical University of Athens


Arpa Emilia Romagna
Arpa Emilia Romagna


Deutscher Wetterdienst
Deutscher Wetterdienst


Hide objectives
Fifteen thousand excess deaths in the heat wave of summer 2003 showed that Europe lacks operational capabilities to provide adequate medium-range (3-7 day) & short-range (1-3 day) forecasts for natural disasters involving atmospheric chemistry & dy namics. This proposal, GEMS, will create new European operational capabilities for medium-range & short-range air-chemistry forecasts, through much improved exploitation of satellite data. The GEMS consortium comprises ten regional centres, most with o perational responsibilities for regional air-quality forecasting, ten leading research labs with capabilities & models on all aspects of atmospheric chemistry, two leading European labs, ECMWF with global operational weather capabilities, & the E U's JRC with global diagnostic capabilities. The research teams & ECMWF will develop a global operational medium-range forecast / assimilation capability for dynamics & composition, exploiting all available satellite data. The global forecasts wil l provide key information on long-range transport of air pollutants to the regional forecast models, through the forecast boundary conditions used by the regional systems. The improved regional forecasts will be used by air-quality authorities at city leve l, in dozens of cities across Europe. Based on the best science, the integrated forecast / assimilation capability will provide a powerful monitoring capability for greenhouse gases, reactive gases and aerosols. Sophisticated new inversion methods will be developed to infer surface fluxes of CO2 and other species through use of the surface flask data with the gridded atmospheric fields on transport & composition. The GEMS project will produce global retrospective analyses of the atmospheric dynamics and composition for the troposphere & stratosphere, and will be able to assess the impact of changes both on global & regional scale, examining extremes as well as means. The real-time & retros

Source : Cordis  

Changes in atmospheric sulfur burdens and concentrations and resulting radiative forcings under IPCC SRES emission scenarios for 1990-2100
2005
Auteurs : Olivier Boucher, Didier Hauglustaine et Maï Pham
Pas de résumé disponible
Source : HAL  

Delivery of aerosol products for assimilation and environmental use
DAEDALUS
2003 - 2005

Sujets :
Resources of the Sea, Fisheries, Forecasting, Meteorology, Environmental Protection
Participants :
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE FRANCE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Research

URA 0713 - LABORATOIRE D'OPTIQUE ATMOSPHÉRIQUE Laboratoire d'Optique Atmosphérique (URA 713) UER de Physique Fondamentale Université de Lille 59655
FRANCE
ROYAL NETHERLANDS METEOROLOGICAL INSTITUTE NEDERLAND
ROYAL NETHERLANDS METEOROLOGICAL INSTITUTE
Other

P.O. Box 201 10,Wilhelminalaan 10 3730 AE
NEDERLAND
BELGIAN INSTITUTE FOR SPACE AERONOMY BELGIQUE-BELGIË
BELGIAN INSTITUTE FOR SPACE AERONOMY
Research,Other

3,Ringlaan 3 1180
BELGIQUE-BELGIË
NORWEGIAN INSTITUTE FOR AIR RESEARCH NORGE
NORWEGIAN INSTITUTE FOR AIR RESEARCH
Research,Other

P.O. Box 100 Instituttveien 18 2027
NORGE
NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH - TNO NEDERLAND
NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH - TNO
Research,Other

TNO PHYSICS AND ELECTRONICS LABORATORY P.B. 6031 63,Oude Waalsdorperweg 63 2509 JG
NEDERLAND
UNIVERSITY OF SCIENCE AND TECHNOLOGY OF LILLE FRANCE
UNIVERSITY OF SCIENCE AND TECHNOLOGY OF LILLE
Education

UMR 8518 - LABORATOIRE D'OPTIQUE ATMOSPHÉRIQUE Bètiment P5 59655
FRANCE
UNIVERSIDADE DE EVORA PORTUGAL
UNIVERSIDADE DE EVORA
Education

CENTRO DE GEOFISICA DE EVORA PO Box 94 Rua Romao Ramalho 59 7000-671
PORTUGAL
COMMISSION OF THE EUROPEAN COMMUNITIES ITALIA
COMMISSION OF THE EUROPEAN COMMUNITIES
Research

INSTITUTE FOR ENVIRONMENT AND SUSTAINABILITY CLIMATE CHANGE UNIT Via Enrico Fermi 1 21020
ITALIA
Laboratoire d'Optique Atmosphèrique
Laboratoire d'Optique Atmosphèrique


Royal Netherlands Meteorological Institute
Royal Netherlands Meteorological Institute


Belgian Institute for Space Aeronomy
Belgian Institute for Space Aeronomy


Norwegian Institute for Air Research
Norwegian Institute for Air Research


NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH
NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH


Hide objectives
Atmospheric aerosols affect human health, continental and marine ecosystems, visibility, and the Earth's climate, requiring dedicated monitoring of their properties. DAEDALUS is a focused project to make an inventory of existing data relevant to aerosol monitoring, assess the users' needs at the European level interims of troposphere and stratospheric aerosol properties, evaluate the scientific, technical, and institutional efforts needed to meet the users' needs, match the available aerosol data products with the information needed by the group of users, and improve methodologies for making optimal use of satellite data and for assimilating aerosol data in transport models. DAEDALUS will provide the necessary impetus for designing long-term sustainable and fully operational European monitoring of aerosol properties at regional and global scales over sea and over land, as foreseen in GMES.

Source : Cordis  

Improvement of the detection of desert dust over the Sahel using METEOSAT IR imagery
2006
Auteurs : A. Alias, Philippe François, M. Legrand, C. Moulin et G. Vergé-Dépré
Masquer le résumé
Desert dust over the arid regions of Africa is detected using the Infrared Difference Dust Index (IDDI) derived from the thermal infrared (TIR) channel of METEOSAT. However, the comparison with photometric aerosol optical thickness (AOT) of this dust index reveals some discrepancies. Using an instrumented site in Sahel where aerosol properties and meteorological conditions were monitored daily during the dry season, we performed radiative transfer computations with the MODTRAN 4.1 code to develop a method to improve the IDDI usefulness. We found that discrepancies between AOT and IDDI variations mostly come from changes in the surface temperature (Ts), which is an important parameter for radiative transfer computations in the TIR. We show that this temperature varies from day to day with the surface wind speed and during the course of the season with the solar elevation, and that it is possible, for the site considered, to correct Ts from these combined effect using a simple parameterization. We also observe that the dust layer itself has an impact on Ts by reducing the amount of solar radiation at the surface, and that this phenomenon can also be accounted for by adding an AOT-dependence to the above parameterization of Ts. We show that this parameterization allows improving the agreement between the IDDI and the photometric AOT.
Keywords :
Source : HAL  

Comments on the "Spatial variability of coastal surface water temperature during upwelling"
1980
Auteurs : Pierre-Yves Deschamps, Robert Frouin et Lucien Wald
Masquer le résumé
Comments on the article "Spatial variability of coastal surface water temperature during upwelling"
Keywords :
Source : HAL  





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