Late Holocene climates of the Near East deduced from Dead Sea level variations and modern regional winter rainfall
- 1 July 2003
- journal article
- Published by Cambridge University Press (CUP) in Quaternary Research
- Vol. 60 (3), 263-273
- https://doi.org/10.1016/j.yqres.2003.07.011
Abstract
The Dead Sea is a terminal lake of one of the largest hydrological systems in the Levant and may thus be viewed as a large rain gauge for the region. Variations of its level are indicative of the climate variations in the region. Here, we present the decadal- to centennial-resolution Holocene lake-level curve of the Dead Sea. Then we determine the regional hydroclimatology that affected level variations. To achieve this goal we compare modern natural lake-level variations and instrumental rainfall records and quantify the hydrology relative to lake-level rise, fall, or stability. To quantify that relationship under natural conditions, rainfall data pre-dating the artificial Dead Sea level drop since the 1960s are used. In this respect, Jerusalem station offers the longest uninterrupted pre-1960s rainfall record and Jerusalem rains serve as an adequate proxy for the Dead Sea headwaters rainfall. Principal component analysis indicates that temporal variations of annual precipitation in all stations in Israel north of the current 200 mm yr−1 average isohyet during 1940–1990 are largely synchronous and in phase (∼70% of the total variance explained by PC1). This station also represents well northern Jordan and the area all the way to Beirut, Lebanon, especially during extreme drought and wet spells. We (a) determine the modern, and propose the past regional hydrology and Eastern Mediterranean (EM) climatology that affected the severity and length of droughts/wet spells associated with multiyear episodes of Dead Sea level falls/rises and (b) determine that EM cyclone tracks were different in average number and latitude in wet and dry years in Jerusalem. The mean composite sea level pressure and 500-mb height anomalies indicate that the potential causes for wet and dry episodes span the entire EM and are rooted in the larger-scale northern hemisphere atmospheric circulation. We also identified remarkably close association (within radiocarbon resolution) between climatic changes in the Levant, reflected by level changes, and culture shifts in this region.Keywords
This publication has 21 references indexed in Scilit:
- Sea level pressure patterns associated with dry or wet monthly rainfall conditions in TurkeyTheoretical and Applied Climatology, 2001
- Cultural Responses to Climate Change During the Late HoloceneScience, 2001
- High‐resolution geological record of historic earthquakes in the Dead Sea basinJournal of Geophysical Research, 2001
- What Drives Societal Collapse?Science, 2001
- Forecasting Eastern Mediterranean DroughtsMonthly Weather Review, 2000
- Holocene Earthquakes Inferred from a Fan-Delta Sequence in the Dead Sea GrabenQuaternary Research, 2000
- The Eastern Mediterranean paleoclimate as a reflection of regional events: Soreq cave, IsraelEarth and Planetary Science Letters, 1999
- The Genesis and Collapse of Third Millennium North Mesopotamian CivilizationScience, 1993
- The Holocene climatic record of the salt caves of Mount Sedom IsraelThe Holocene, 1991
- A diagnostic study of winter diabatic heating in the Mediterranean in relation to cyclonesQuarterly Journal of the Royal Meteorological Society, 1991