MIPAS Reference Atmospheres
(1) University of Leicester, EOS, Space Research Centre, Leicester LE1 7RH, United Kingdom
As part of the data processing activities for the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on ENVISAT, reference atmosphere profiles have been produced. These atmospheres consist of two forms: (1) a standard set of profiles for five typical atmospheric states ranging from tropical to polar winter (the data include typical, maximum, minimum and sigma profiles); (2) a four season, six latitude band climatology. Gases included in the climatology comprise not only the major trace gases retrieved operationally in the MIPAS trace gas processing suite but also a large number of species which contribute to the observed MIPAS spectra of the atmosphere. More than 30 trace gases are represented in the atmosphere files.
In this paper, an overview of the reference database will be given, known problems identified and expectations of future improvements will be provided. Particular attention will be paid to key molecules such as carbon dioxide, for which the climatology is now updated on an annual basis with considerable detail in the vertical profiles, and nitrous oxide where potential errors have been identified in pre-MIPAS data sets. The results will be of interest for retrieval, radiative transfer, instrument design and atmospheric model studies.
Keywords: ESA European
Space Agency - Agence spatiale europeenne,
observation de la terre, earth observation,
satellite remote sensing,
teledetection, geophysique, altimetrie, radar,
chimique atmospherique, geophysics, altimetry, radar,