Characteristics of Extreme Temperature Events During 1961-2009 in Heilongjiang Province
Extreme temperature events in Heilongjiang Province during 1961-2009 and their variation characteristics were evaluated by using the 8 WMO extreme climate indices.The results show that, in recent 49 years, summer days (SU), extreme minimum temperature (TNN), extreme maximum temperature (TXX), warm nights (TN90) and warm days (TX90) displayed a significantly increasing tendency, while frost days (FD), cold nights (TN 10) and cold days (TX10) showed a decreasing tendency.The TNN and TXX had obviously interannual variabilities, and abrupt changes.The increase in TNN mainly occurred after the mid-1980s, while the obvious rising in TXX occurred after 1990.Spatially, extreme temperatures showed a consistent increasing or decreasing tendency over the whole province.The rising of night temperature contributed more to the wanning than day temperature.
extreme temperature indicesspatiotemporal changewarmingHeilongjiang Province
国家科技期刊平台
NSTL
万方数据
