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| Titel |
1 km fog and low stratus detection using pan-sharpened MSG SEVIRI data |
| VerfasserIn |
H. M. Schulz, B. Thies, J. Čermák, J. Bendix |
| 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. 10 ; Nr. 5, no. 10 (2012-10-22), S.2469-2480 |
| Datensatznummer |
250003127
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| Publikation (Nr.) |
 copernicus.org/amt-5-2469-2012.pdf |
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| Zusammenfassung |
| In this paper a new technique for the detection of fog and low stratus in 1 km
resolution from MSG SEVIRI data is presented. The method relies on the
pan-sharpening of 3 km narrow-band channels using the 1 km high-resolution
visible (HRV) channel. As solar and thermal channels had to be sharpened for
the technique, a new approach based on an existing pan-sharpening method was
developed using local regressions. A fog and low stratus detection scheme
originally developed for 3 km SEVIRI data was used as the basis to derive 1 km
resolution fog and low stratus masks from the sharpened channels. The
sharpened channels and the fog and low stratus masks based on them were
evaluated visually and by various statistical measures. The sharpened
channels deviate only slightly from reference images regarding their pixel
values as well as spatial features. The 1 km fog and low stratus masks are
therefore deemed of high quality. They contain many details, especially
where fog is restricted by complex terrain in its extent, that cannot be
detected in the 3 km resolution. |
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