 |
| Titel |
Surface solar radiation variability over Eastern Mediterranean: A high spatial resolution view from satellite and ground-based observations |
| VerfasserIn |
Georgia Alexandri, Aristeidis K. Georgoulias, Charikleia Meleti, Dimitris Balis |
| Konferenz |
EGU General Assembly 2013
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250078807
|
|
|
|
|
|
| Zusammenfassung |
| Surface Solar Radiation (SSR) has been measured for decades from ground-based
observations for several spots around the planet. On the other hand, during the last decades,
satellite observations made possible the assessment of the spatial variability of the
SSR at a global as well as regional scale. In this study, a detailed view of the SSR
spatiotemporal variability is presented at a high spatial resolution, focusing on the region of
Eastern Mediterranean. This is a region of particular interest since it is affected by
aerosols of various origins (continental, sea, dust and biomass burning particles)
and encloses countries with significant socioeconomical changes during the last
decades. The SSR satellite data used in this study have been obtained from the
Satellite Application Facility on Climate Monitoring (CM SAF) (www.cmsaf.eu). The
CM SAF SSR dataset is based on reflections in the visible channel of Meteosat
First Generation, has a spatial resolution of 0.03ox0.03o and spans from 1983 to
2005. The satellite observations are validated against ground-based measurements
for the city of Thessaloniki, a coastal city of ~1 million inhabitants in northern
Greece, situated in the heart of Eastern Mediterranean. Measurements from two
pyranometers, an Eppley Precision pyranometer (1983-1992) and a Kipp & Zonen CM-11
pyranometer (1993-2005), both located at the center of the city, were homogenized
and a uniform time series for the 23 year period was constructed. SSR was also
calculated with the use of MODIS level-2 aerosol and cloud satellite data for the region
of Thessaloniki and the Santa Barbara DISORT Atmospheric Radiative Transfer
(SBDART) model. These new satellite-based results are compared to both CM SAF and
ground-based observations in order to examine whether SBDART and MODIS
could be further used for the investigation of the spatial patterns of SSR in the area. |
|
|
|
|
|
|