 |
| Titel |
Characterization of in band stray light in SBUV/2 instruments |
| VerfasserIn |
L. K. Huang, M. T. DeLand, S. L. Taylor, L. E. Flynn |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1867-1381
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 1 ; Nr. 7, no. 1 (2014-01-28), S.267-278 |
| Datensatznummer |
250115571
|
| Publikation (Nr.) |
 copernicus.org/amt-7-267-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| Significant in-band stray light (IBSL) error at solar zenith angle (SZA)
values larger than 77° near sunset in 4 SBUV/2 (Solar Backscattered Ultraviolet) instruments, on board the
NOAA-14, 17, 18 and 19 satellites, has been characterized. The IBSL error is
caused by large surface reflection and scattering of the air-gapped
depolarizer in front of the instrument's monochromator aperture. The source
of the IBSL error is direct solar illumination of instrument components near
the aperture rather than from earth shine. The IBSL contamination at 273 nm
can reach 40% of earth radiance near sunset, which results in as much as
a 50% error in the retrieved ozone from the upper stratosphere. We have analyzed
SBUV/2 albedo measurements on both the dayside and nightside to develop an
empirical model for the IBSL error. This error has been corrected in the
V8.6 SBUV/2 ozone retrieval. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|