Hélène BROGNIEZ Speciality: Physics of Remote Sensing

Actual position: Associate Professor at the University of Versailles St Quentin-en-Yvelines (UVSQ)

Laboratoire ATmosphères, Milieux, Observations Spatiales (LATMOS) Team : Statistiques, Processus, Aérosols et Cycle de l’Eau (SPACE) Bat. Mermoz, 212 10-12 avenue de l'Europe 78140 Velizy-Villacoublay, France tel: +33 (0) 1 39 25 39 15 / fax: +33 (0) 1 39 25 47 78 email: helene.brogniez@_NOSPAM_latmos.ipsl.fr       (don't forget to remove the "_NOSPAM_")

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My main research topics:

• Passive remote sensing of atmospheric water vapor:
  • microwave (~183.3GHz) and infrared (~6.3microns) measurements
  • calibration methods : - concerning the METEOSAT so-called "Water Vapor" channel
                                   - under development for the SAPHIR microwave radiometer onboard MeghaTropiques
  • processing of satellital observations (extraction of information; archiving of data)
  • radiative transfer computations (e.g. RTTOVS fast radiative model)
• Tropical and subtropical climates:
  • Retrieval of layer-mean humidity from clear-sky WV measurements
  • Dynamical analyses using back-trajectory reconstructions
  • Evaluation of General Circulation Models simulations
• Model answers to climate change:
  • Large-scale dynamic and effect on the free tropospheric water vapor
  • Change in the water vapor distribution over mid-latitude areas
• Upper-Troposphere / Lower Stratosphere transport

Useful tools:

• The AAPP software (ATOVS and AVHRR Pre-processing Package) distributed by the NWP SAF
• The RTTOV model (Radiative Transfer for TOVS), also distributed by the NWP SAF
• The ISCCP cloud products (International Satellite Cloud Climatology Project), part of the WCRP (World Climate Research Program)
• The library of environmental data, developped by the NOAA-NESDIS organization
• The Earth System Grid (ESG)
• The NCEP/NCAR re-analysis project, of the NOAA-CIRES Climate Diagnostic Center
• The Climserv dataserver of the IPSL (Institut Pierre Simon Laplace) (in only)
• Statistics and Visualization:IDL, Python (open source), Ferret (open source), Mgraph (open source)

Climate-related, Agencies and Projects links:

• The RealClimate blog, developed by scientists (mainly US): discussions on actual research on climate science.
• Another climate blog, this time developed by the french climate science community ("Climats - Réalité du changement climatique").
• The sciences blog of the Libération newspaper, maintained by a science reporter of Libé: everything related to science, including climate posts.
• The Meteorological Glossary from Météo-France (in only)
• Eumetsat, the european organisation for the exploitation of meteorological satellites
• SATMOS, a french service for archiving satellite observations and meteorological products
• The A-Train constellation of satellites (2002-): Aqua (2002-), CloudSat (2006-), CALIPSO (2006-), PARASOL (2004-), Aura (2004-) and OCO (2008?)
• The AMMA project: African Monsoon Multidisciplinary Analysis
• The franco-indian Megha-Tropiques mission: a high sampling of the intertropical zone to improve the knowledge of the water cycle in the tropical
  atmosphere (planned for launch 2008-2009).

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Teaching

Publications / Communications

Curriculum Vitae