| Comparison of two drought events on relatively warm and cold climate background ——A case study in Shaanxi Province |
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| DOI：10.7606/j.issn.1000-7601.2012.01.40 |
| Key Words: drought event cold period warm period |
| Author Name | Affiliation | | LI Xingmin | Shaanxi Institute of Meteorological Sciences, Xi'an, Shaanxi 710014, China | | YANG Wenfeng | Shaanxi Meteorological Service, Xi'an, Shaanxi 710014, China | | LI Hongmei | Shaanxi Remote Sensing Information Center for Agriculture, Xi'an, Shaanxi 710014, China | | YUAN Yuan | Shaanxi Meteorological Observatory, Xi'an, Shaanxi 710014, China | | QIAO Li | Shaanxi Meteorological Service, Xi'an, Shaanxi 710014, China |
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| Abstract: |
| On the background of climate change, the meteorological disaster change has got wide attention. Based on temperature and the precipitation data from weather stations in Shaanxi Province, this paper analyses the similarities and differences of two drought events, of which one occurred in 1960s when it was relatively cold climate, and the other occurred in 1990s when it was relatively cold climate, according to the drought waterlogging rank, precipitation anomalous percentage as well as CI drought index. The results show that continuous drought may occur in either cold climate period or warm climate period. When drought occurrs in warm climate period, it will be more serious. The duration of a drought event is often longer in northern Shaanxi which is in semiarid region, while a drought event usually includes several drought processes in the central and southern parts of the province which are in subhumid and humid region. The days of drought occurred in 1994—1995 are less than those in 1965—1966 in northern Shaanxi. But in the central and southern parts of the province, the days of drought occurred in 1994—1995 are more than those in 1965—1966. Drought occurred in ddifferent areas show different characteristics. |
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