A scPDSI-based global data set of dry and wet spells for 1901-2009
نویسندگان
چکیده
منابع مشابه
A synoptic study on seasonal patterns of wet and dry spells in midwest of Iran
The effective patterns and mechanisms of synoptic systems during the wet and dry spells in Midwest of Iran(MWI) analyzed and discussed on seasonal scales from 1974 to 2003. Synoptic Analysis is based on synoptic chartson Sea Level Pressure (SLP), 850 and 500 Hpa levels. The results of synoptic analysis show that dry spells in MWIare mostly corresponded to Azores High (AZH) intensifying and its ...
متن کاملthe innovation of a statistical model to estimate dependable rainfall (dr) and develop it for determination and classification of drought and wet years of iran
آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...
15 صفحه اولGlobal Variations in Droughts and Wet Spells: 1900-1995
The Palmer Drought Severity Index (PDSI) was calculated globally using gridded monthly air temperature and precipitation. From 1900 to 1995, there are large multiyear to decadal variations in the percentage areas in severe drought (PDSI < −3.0) and severe moisture surplus (PDSI > +3.0) over many land areas while secular trends are small. Since the late 1970s, however, there have been some incre...
متن کاملa synoptic study on seasonal patterns of wet and dry spells in midwest of iran
the effective patterns and mechanisms of synoptic systems during the wet and dry spells in midwest of iran(mwi) analyzed and discussed on seasonal scales from 1974 to 2003. synoptic analysis is based on synoptic chartson sea level pressure (slp), 850 and 500 hpa levels. the results of synoptic analysis show that dry spells in mwiare mostly corresponded to azores high (azh) intensifying and its ...
متن کاملEmpirical Prediction and Predictability of Dry and Wet Spells of the Indian Summer Monsoon
Prediction of the active (rainy) and break (dry) phases of the Indian summer monsoon intraseasonal oscillations (ISO’s) two to threeweeks in advance is of great importance for food production and water management of the country, but is currently unavailable. Potential predictability inherent in the quasi-periodic nature of the monsoon ISO’s is estimated from daily rainfall and circulation data ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2013
ISSN: 2169-897X
DOI: 10.1002/jgrd.50355