Drought severity change in China during 1961–2012 indicated by SPI and SPEI

Autor:	Wen Wang, Ye Zhu, Jintao Liu, Rengui Xu
Rok vydání:	2014
Předmět:	Atmospheric Science Plateau geography.geographical_feature_category Drainage basin Central china Arid Geography Climatology Evapotranspiration Earth and Planetary Sciences (miscellaneous) Precipitation China Precipitation index Water Science and Technology
Zdroj:	Natural Hazards. 75:2437-2451
ISSN:	1573-0840 0921-030X
DOI:	10.1007/s11069-014-1436-5
Popis:	Using monthly meteorological observation data at 633 sites in China during 1961–2012, the drought severity change has been investigated in terms of the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI) with potential evapotranspiration estimated by the Penman–Monteith equation (SPEI_pm). Significant wetting appeared to have occurred in northwestern corner of China (Xinjiang Province), especially in winter. The middle to northeastern Tibetan Plateau also experienced wetting in the last 52 years in general. Significantly, drying occurred in Central China (mostly in the middle Yellow River basin) and southwestern China (Yunnan–Guizhou Plateau) in spring and in autumn. There is no evidence of an increase in drought severity over China taking the whole country into account. On the contrary, the hyper-arid and arid zones got significantly wetter in the last 52 years as indicated by both SPI and SPEI.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2dd4270c8612c0e2d65929ce70f9a40b https://doi.org/10.1007/s11069-014-1436-5 Zobrazit plný text záznamu Full text from SpringerLink