TITLE:
  Evidences of non-LTE emission in the ISAMS water vapour channels

AUTHORS:
  Zaragoza G., M. Lopez-Puertas, A. Lambert, J. J. Remedios, 
  and F. W. Taylor

REFERENCE:
  Adv. Spa. Res., 22, 1513-1516, 1998

ABSTRACT:
An analysis of the day-night enhancements on the 6.9 mu H2O emission
measured by the Improved Stratospheric and Mesospheric Sounder (ISAMS) on the
Upper Atmospher Research Sounder (UARS) is presented. A characterization of
these differences with parameters such as the solar zenith angle (SZA) and
kinetic temperature has been done and explained in terms of atmospheric
processes by using a non-LTE radiative transfer model. The goal of these
continuing studies is to implement these non-LTE effects in the operational
retrieval of H2O.