Tropospheric CO observed with the NAST-I retrieval methodology, analyses, and first results.
High-resolution infrared spectra from aircraft and space-based observations contain information about tropospheric carbon monoxide (CO) as well as other trace species. A methodology for retrieving tropospheric CO from such remotely sensed spectral data has been developed for the National Polar-Orbiting Operational Environmental Satellite System's Airborne Sounder Testbed-Interferometer (NAST-I). CO profiles of the troposphere, together with its thermodynamic properties, are determined by use of a three-stage retrieval approach that combines the algorithms of physically based statistical eigenvector regression, simultaneous and iterative matrix inversion, and single-variable error-minimization CO profile matrix inverse retrieval. The NAST-I is collecting data while it is aboard high-altitude aircraft throughout many field campaigns. Detailed retrieval analyses based on the NAST-I instrument system along with retrieval results from several recent field campaigns are presented to demonstrate NAST-I CO retrieval capability.
Zhou
Daniel K
DK
Science Directorate, NASA Langley Research Center, 21 Langley Boulevard, Hampton, Virginia 23681, USA. daniel.k.zhou@nasa.gov
Smith
William L
WL
Liu
Xu
X
Li
Jun
J
Larar
Allen M
AM
Mango
Stephen A
SA