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| Titel |
Comprehensive Measurements of Wind Systems at the Dead Sea |
| VerfasserIn |
Jutta Metzger, Ulrich Corsmeier, Norbert Kalthoff, Andreas Wieser, Pinhas Alpert, Joseph Lati |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250126015
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| Publikation (Nr.) |
 EGU/EGU2016-5686.pdf |
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| Zusammenfassung |
| The Dead Sea is a unique place on earth. It is located at the lowest point of the Jordan Rift
valley and its water level is currently at -429 m above mean sea level (amsl). To the West the
Judean Mountains (up to 1000 m amsl) and to the East the Moab mountains (up to 1300 m
amsl) confine the north-south oriented valley. The whole region is located in a transition zone
of semi-arid to arid climate conditions and together with the steep orography, this forms a
quite complex and unique environment.
The Virtual Institute DEad SEa Research Venue (DESERVE) is an international project
funded by the German Helmholtz Association and was established to study coupled
atmospheric, hydrological, and lithospheric processes in the changing environment of the
Dead Sea.
Previous studies showed that the valley’s atmosphere is often governed by periodic wind
systems (Bitan, 1974), but most of the studies were limited to ground measurements and
could therefore not resolve the three dimensional development and evolution of these wind
systems. Performed airborne measurements found three distinct layers above the Dead Sea
(Levin, 2005). Two layers are directly affected by the Dead Sea and the third is the commonly
observed marine boundary layer over Israel.
In the framework of DESERVE a field campaign with the mobile observatory KITcube
was conducted to study the three dimensional structure of atmospheric processes
at the Dead Sea in 2014. The combination of several in-situ and remote sensing
instruments allows temporally and spatially high-resolution measurements in an
atmospheric volume of about 10x10x10 km3. With this data set, the development and
evolution of typical local wind systems, as well as the impact of regional scale wind
conditions on the valley’s atmosphere could be analyzed. The frequent development of a
nocturnal drainage flow with wind velocities of over 10 m s−1, the typical lake
breeze during the day, its onset and vertical extension as well as strong downslope
winds in the afternoon, which are often intensified by regional scale wind systems
like the Mediterranean Sea Breeze and the coupling of the synoptic flow, will be
presented.
Bitan, A. (1974). The wind regime in the north-west section of the Dead-Sea. Archiv für
Meteorologie, Geophysik und Bioklimatologie, Serie B, 22(4), 313-335.
Levin, Z., Gershon, H., & Ganor, E. (2005). Vertical distribution of physical and chemical
properties of haze particles in the Dead Sea valley. Atmospheric Environment, 39(27),
4937-4945. |
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