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| Titel |
Comparison of satellite microwave backscattering (ASCAT) and visible/near-infrared reflectances (PARASOL) for the estimation of aeolian aerodynamic roughness length in arid and semi-arid regions |
| VerfasserIn |
C. Prigent, C. Jimenez, J. Catherinot |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 5, no. 11 ; Nr. 5, no. 11 (2012-11-13), S.2703-2712 |
| Datensatznummer |
250003169
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| Publikation (Nr.) |
 copernicus.org/amt-5-2703-2012.pdf |
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| Zusammenfassung |
| Previous studies examined the possibility to estimate the aeolian aerodynamic
roughness length from satellites, either from visible/near-infrared
observations or from microwave backscattering measurements. Here we compare
the potential of the two approaches and propose to merge the two sources of
information to benefit from their complementary aspects, i.e. the high
spatial resolution of the visible/near-infrared (6 km for PARASOL that is
part of the A-Train) and the independence from atmospheric contamination of
the active microwaves (ASCAT on board MetOp with a lower spatial resolution
of 25 km). A global map of the aeolian aerodynamic roughness length at 6 km
resolution is derived, for arid and semi-arid regions. It shows very good
consistency with the existing information on the properties of these
surfaces. The dataset is available to the community, for use in atmospheric
dust transport models. |
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