Air-Density and Temperature Profiles

Stéphane Marchand (1) , Philippe Keckhut (1) , K. H. Fricke (2) , U. Blum (2) , H. Schets , S. Pal (3) , D. Wardle (4) , V., Cuomo (5) , G. Pappalardo (5) , Alain Hauchecorne (1)

1 SA - Service d'aéronomie
2 Physikalisches Institut [Bonn]
3 Science and Art Innovation Inc.
4 Meteorological Service of Canada
5 IMAA - Istituto di Metodologie per l'Analisi Ambientale

Lidar system and radio-soundings were used to validate both air-density and low and high-resolution temperature profiles of the GOMOS instrument onboard ENVISAT-1 satellite. No bias greater than 7% was found for the air-density comparisons with lidar and there is a very strong global agreement. The conditions of the occultations have a large impact on the comparisons concerning the temperature profile. The “dark limb” measurement conditions show great agreement between 35 and 60 km with no bias greater than 5% whereas the “bright limb” measurement conditions show poor results. The High Resolution temperature shows a very interesting potential.

Domaines: Géophysique [physics.geo-ph]

Stéphane Marchand, Philippe Keckhut, K. H. Fricke, U. Blum, H. Schets, et al.. Air-Density and Temperature Profiles. ENVISAT Validation Workshop (ESA SP-531), ESA, Dec 2003, Frascati, Italy. pp.32.1. ⟨hal-01331784⟩