 |
| Titel |
Modeling polarized solar radiation from the ocean–atmosphere system for CLARREO inter-calibration applications |
| VerfasserIn |
W. Sun, C. Lukashin |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 13, no. 20 ; Nr. 13, no. 20 (2013-10-23), S.10303-10324 |
| Datensatznummer |
250085763
|
| Publikation (Nr.) |
 copernicus.org/acp-13-10303-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| Reflected solar radiance from the Earth–atmosphere system is polarized.
Radiance measurements can be affected by light's state of polarization if the
radiometric sensor has polarization dependence. To enable the Climate
Absolute Radiance and Refractivity Observatory (CLARREO) mission for
inter-calibration of the imagers with polarization dependence, such as the
MODIS, the polarization state of the light must be known with sufficient
accuracy. For this purpose, the polarized solar radiation from the
ocean–atmosphere system is studied with an adding-doubling radiative transfer
model (ADRTM). The Cox–Munk ocean wave slope distribution model is used
in calculation of the reflection matrix of a wind-ruffled ocean surface. An
empirical foam spectral reflectance model and an empirical spectral
reflectance model for water volume below the surface are integrated in the
ocean-surface model. Solar reflectance from the ADRTM is compared with that
from the discrete-ordinate radiative transfer (DISORT) model. Sensitivity
studies are conducted for various ocean-surface and atmospheric conditions
for the stratification of polarization distribution models (PDMs), which are
to be used in the inter-calibration of the polarization-sensitive imager
measurements with the CLARREO data. This report presents the first accurate
approach for making the spectral PDMs over broad solar spectra, which cannot
be achieved by empirical PDMs based on the data from polarimetric sensors. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|