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| Titel |
Diurnal evolution of cloud base heights in convective cloud fields from MSG/SEVIRI data |
| VerfasserIn |
R. Meerkötter, L. Bugliaro |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 5 ; Nr. 9, no. 5 (2009-03-10), S.1767-1778 |
| Datensatznummer |
250007011
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| Publikation (Nr.) |
 copernicus.org/acp-9-1767-2009.pdf |
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| Zusammenfassung |
| This study shows that it is possible to retrieve the temporal evolution of
cloud base heights in convective broken cloud fields from data of the SEVIRI
instrument onboard the geostationary satellite Meteosat-9. Presented and
discussed are time dependent base heights with a temporal resolution of 15 min from morning to afternoon. Cloud base heights retrieved from SEVIRI
data are also compared with independent measurements of a ceilometer, with
condensation levels calculated from radiosonde data and with base heights
obtained from an application of the method to NOAA/AVHRR data. The validation
has been performed for three days in the year 2007 and for seven test areas
distributed over Germany and neighbouring countries. The standard deviations
of the absolute differences between cloud base heights from Meteosat-9 and
radiosonde measurements as well as between NOAA/AVHRR and Meteosat-9 results
are both of the order of ±290 m. The correlation coefficient is 0.53 for the
comparison of satellite with radiosonde measurements and 0.78 for the
intercomparison of the satellite measurements. Furthermore, it is shown that
the method retrieves the temporal evolution of cloud base heights in very
good agreement with time dependent ceilometer measurements. |
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