INTERPRETATION OF THE LIMB RADIANCE MEASUREMENTS IN THE CO_2 15 μm BAND BY THE CRISTA INSTRUMENT ACCOUNTING FOR THE NON-LTE CONDITIONS

摘要

The method of simultaneous retrieval of atmospheric parameters accounting for the non-LTE conditions has been applied to the limb radiance measurements in the CO_2 15 μm band by the CRISTA instrument. As a result, profiles of the kinetic temperature, pressure, CO_2 volume mixing ratio were obtained as well as the vibrational temperatures corresponding to the states of molecules of four most abundant CO_2 isotopes. The peculiar features of the kinetic temperature and CO_2 volume mixing ratio profiles are discussed and compared with climatological data. The influence of non-LTE effect on the results of the kinetic temperature retricvals by the "traditional" methods is illustrated.