Seasonal and regional variability of wet and dry spell characteristics over Turkey

Basit Öğe Kaydı
dc.contributor.authorBaltacı, Hakkı
dc.contributor.authorArslan, Hilal
dc.date.accessioned2024-06-13T20:17:54Z
dc.date.available2024-06-13T20:17:54Z
dc.date.issued2022
dc.departmentFakülteler, Sağlık Bilimleri Fakültesi, İş Sağlığı ve Güvenliği
dc.description.abstractUnderstanding the variations and leading atmospheric mechanisms causing wet and dry episodes are very important for the water management strategies. For this purpose, this study investigates the spatiotemporal variation and background environmental conditions for wet and dry spell lengths in Turkey. With this aim, Mann-Kendall rank statistic test and fitted ordinary least squares regression method are implemented to the 92 meteorology stations, which are homogenously distributed over Turkey, for the period 1966-2018. In terms of atmospheric circulation mechanisms, synoptic composites of NCEP/NCAR Reanalysis data (sea level pressure, air temperature at 850-hPa level, geopotential height at 500-hPa level) and sea surface temperature from NOAA High Resolution data are applied to the five years of highest frequency long dry/wet spells. According to the results, both the increasing frequencies of wet spells and their highest contribution to the precipitation are mainly found in the eastern Black Sea Region (BSR) of Turkey during all seasons, especially in spring. In this sub -region, statistically significant increasing (decreasing) springtime wet (dry) spell lengths in the neighboring five stations (i.e. Ardahan, Artvin, Bayburt, Hopa, Rize) indicated that the majority of wet spells (almost 30%) appear to occur between 3 and 5 days and the maximum number of the wet spell days are shown in the last two decades of the eastern BSR. Local quasi-stationary surface high located over eastern Black Sea (1016-hPa core) and associated weak northerly winds transfer relatively warm moist air from the sea surface (11.8 C in average). This air mass meets with cold-land and low level (6 C at 850 hPa) air masses, developing instability conditions and resulting in low precipitation rates in wet spells for the eastern BSR. On the other hand, by the extension of the south-west Asian Monsoon to the inner parts of Turkey, relatively hot dry air is transferred to the eastern BSR via southerly winds. As a result of this long-staying Asiatic monsoon characteristics, more dry days are shown in the region due to insufficient moisture and associated lack of precipitation.
dc.identifier.doi10.1016/j.atmosres.2022.106083
dc.identifier.issn0169-8095
dc.identifier.issn1873-2895
dc.identifier.scopus2-s2.0-85125128772
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.atmosres.2022.106083
dc.identifier.urihttps://hdl.handle.net/11501/1140
dc.identifier.volume270
dc.identifier.wosWOS:000772629400002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Inc
dc.relation.ispartofAtmospheric Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectWet Spell
dc.subjectDry Spell
dc.subjectSynoptic
dc.subjectTurkey
dc.subjectNCEP/NCAR
dc.titleSeasonal and regional variability of wet and dry spell characteristics over Turkey
dc.typeArticle

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim Yok
İsim:
Tam Metin / Full Text
Boyut:
6.57 MB
Biçim:
Adobe Portable Document Format
İndir

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Sağlık Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu