Research on vertical spatial characteristic of satellite infrared hyperspectral atmospheric sounding data

• Published in: Frontiers of earth science Vol. 16; no. 2; pp. 265 - 276
• Main Authors: SONG, Ci, YIN, Qiu
• Format: Journal Article
• Language: English
• Published: Beijing Higher Education Press 01.06.2022; Springer Nature B.V
• Subjects: Atmospheric models; Atmospheric sounding; Atmospheric temperature; Earth and Environmental Science; Earth Sciences; FY-4A GIIRS; Geosynchronous orbits; Infrared analysis; infrared hyperspectral; Lower stratosphere; Mathematical models; Meteorological satellites; Remote sensors; Research Article; Soundings; Spatial data; Stratosphere; Temperature; Temperature distribution; Troposphere; Vertical distribution; vertical spatial characteristic; infrared hyperspectral; atmospheric temperature; atmospheric sounding; vertical spatial characteristic; FY-4A GIIRS
• ISSN: 2095-0195; 2095-0209
• DOI: 10.1007/s11707-020-0841-1

Spatial characteristic is an important indicator of remote sensor performance, and space-borne infrared hyperspectral sounder is the frontier of atmospheric vertical sounding technology. In this paper, the formation mechanism of the vertical spatial characteristics involved in the space-borne infrared hyperspectral sounding data are analyzed in detail, which shows that the vertical spatial characteristics of sounding data depends not only on the spectral channels and their waveband coverage, but also the specific atmospheric parameter and its specific variation interested. The indicators of vertical spatial characteristics are defined and their mathematical models are established based on the mechanism analyses. These models are applied to the vertical spatial characteristic evaluation of atmospheric temperature sounding for FY-4A GIIRS, which is the first space-borne infrared hyperspectral atmospheric sounder in geostationary orbit. It is concluded that FY-4A GIIRS can sound the vertical temperature distribution in whole troposphere and lower stratosphere with height<35 km. This study can provide basic information to support the improvement of infrared hyperspectral sounder and the trace of vertical spatial characteristics of atmospheric inversion products.