INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations
ABSTRACT: The Middle East deserts are often subjected to dust, which reduces horizontal visibility to 5 km, and sometimes even to <1 km. The present study examines the annual and inter-annual occurrences of dust events based on 37 years of visibility observations from Hazerim (near Beer Sheba) co...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.463.7173 2023-05-15T17:36:09+02:00 INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations Uri Dayan A Baruch Ziv B Tova Shooba Yehouda Enzela The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.463.7173 http://geography.huji.ac.il/.upload/Uri Dayan Pub/57.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.463.7173 http://geography.huji.ac.il/.upload/Uri Dayan Pub/57.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://geography.huji.ac.il/.upload/Uri Dayan Pub/57.pdf Mediterranean Basin. Copyright 2007 Royal Meteorological Society KEY WORDS PM10 visibility synoptic systems NAO dust text ftciteseerx 2016-01-08T06:46:35Z ABSTRACT: The Middle East deserts are often subjected to dust, which reduces horizontal visibility to 5 km, and sometimes even to <1 km. The present study examines the annual and inter-annual occurrences of dust events based on 37 years of visibility observations from Hazerim (near Beer Sheba) correlated with PM10 dust concentration. The visibility data was converted to PM10 dust concentration, using concurrent data for three years. We then analyse the linkage between dust and synoptic- to global-scale weather systems. The monthly data indicate that the dust season starts in October and ends in May, with a maximum in March. More than 89 % of the total annual dust is accumulated between December and May, the ‘high dust season’. The annual totals vary as much as an order of magnitude from year to year. The synoptic system that produces the majority of the dust over the northern Negev is the Cyprus Low, contributing 2/3 of both the total yearly dust yield and of the number of dust observations. This suggests that a positive relationship exists between the dust in the Negev and rainfall in north Israel, both of which are generated by Cyprus Lows. Indeed, a significant (at 0.05 level) correlation of +0.30 was found between the two. Correlation maps evidence that in dust-rich years the cyclonic activity over the Mediterranean is abnormally high and in poor-dust years it is low. A highly significant negative correlation (−0.66) was found between the dust yield and the intensity of the North Atlantic oscillation (NAO), which modulates the cyclonic activity over Europe and the northern Mediterranean. This may also imply that Text North Atlantic North Atlantic oscillation Unknown |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Mediterranean Basin. Copyright 2007 Royal Meteorological Society KEY WORDS PM10 visibility synoptic systems NAO dust |
spellingShingle |
Mediterranean Basin. Copyright 2007 Royal Meteorological Society KEY WORDS PM10 visibility synoptic systems NAO dust Uri Dayan A Baruch Ziv B Tova Shooba Yehouda Enzela INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations |
topic_facet |
Mediterranean Basin. Copyright 2007 Royal Meteorological Society KEY WORDS PM10 visibility synoptic systems NAO dust |
description |
ABSTRACT: The Middle East deserts are often subjected to dust, which reduces horizontal visibility to 5 km, and sometimes even to <1 km. The present study examines the annual and inter-annual occurrences of dust events based on 37 years of visibility observations from Hazerim (near Beer Sheba) correlated with PM10 dust concentration. The visibility data was converted to PM10 dust concentration, using concurrent data for three years. We then analyse the linkage between dust and synoptic- to global-scale weather systems. The monthly data indicate that the dust season starts in October and ends in May, with a maximum in March. More than 89 % of the total annual dust is accumulated between December and May, the ‘high dust season’. The annual totals vary as much as an order of magnitude from year to year. The synoptic system that produces the majority of the dust over the northern Negev is the Cyprus Low, contributing 2/3 of both the total yearly dust yield and of the number of dust observations. This suggests that a positive relationship exists between the dust in the Negev and rainfall in north Israel, both of which are generated by Cyprus Lows. Indeed, a significant (at 0.05 level) correlation of +0.30 was found between the two. Correlation maps evidence that in dust-rich years the cyclonic activity over the Mediterranean is abnormally high and in poor-dust years it is low. A highly significant negative correlation (−0.66) was found between the dust yield and the intensity of the North Atlantic oscillation (NAO), which modulates the cyclonic activity over Europe and the northern Mediterranean. This may also imply that |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Uri Dayan A Baruch Ziv B Tova Shooba Yehouda Enzela |
author_facet |
Uri Dayan A Baruch Ziv B Tova Shooba Yehouda Enzela |
author_sort |
Uri Dayan |
title |
INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations |
title_short |
INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations |
title_full |
INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations |
title_fullStr |
INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations |
title_full_unstemmed |
INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. (in press) Published online in Wiley InterScience (www.interscience.wiley.com) DOI:10.1002/joc.1587 Suspended dust over southeastern Mediterranean and its relation to atmospheric circulations |
title_sort |
international journal of climatology int. j. climatol. (in press) published online in wiley interscience (www.interscience.wiley.com) doi:10.1002/joc.1587 suspended dust over southeastern mediterranean and its relation to atmospheric circulations |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.463.7173 http://geography.huji.ac.il/.upload/Uri Dayan Pub/57.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
http://geography.huji.ac.il/.upload/Uri Dayan Pub/57.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.463.7173 http://geography.huji.ac.il/.upload/Uri Dayan Pub/57.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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