CAJ | 학술논문

利用江苏省35个测站1960-2004年45 a的逐日最高温度、最低温度、日降水量资料集,分析了近45 a江苏省极端高温、极端低温以及极端降水的基本变化特征.结果表明:(1)多年平均年极端高温的空间分布表现为西高东低,而极端低温则表现为自北向南的显著增加,极端降水的发生频次自南向北逐渐减少;(2)极端高温在江苏中部以及南部大部分地区有上升趋势,而西北地区则有弱的下降趋势;全省极端低温表现为显著的升高趋势;极端降水频次在南部地区有增加的趋势,北部减少趋势,中部则无变化趋势.(3)江苏极端高温、低温和极端降水的年际和年代际变化具有区域性差异,其中极端降水频次变化的区域性差异最为明显.
이용강소성35개측참1960-2004년45 a적축일최고온도、최저온도、일강수량자료집,분석료근45 a강소성겁단고온、겁단저온이급겁단강수적기본변화특정.결과표명:(1)다년평균년겁단고온적공간분포표현위서고동저,이겁단저온칙표현위자북향남적현저증가,겁단강수적발생빈차자남향북축점감소;(2)겁단고온재강소중부이급남부대부분지구유상승추세,이서북지구칙유약적하강추세;전성겁단저온표현위현저적승고추세;겁단강수빈차재남부지구유증가적추세,북부감소추세,중부칙무변화추세.(3)강소겁단고온、저온화겁단강수적년제화년대제변화구유구역성차이,기중겁단강수빈차변화적구역성차이최위명현.
By using 1960-2004 daily maximum temperature, minimum temperature and daily rainfall data of 35 stations over Jiangsu Province, the basic features of extreme climate events such as extreme maximum temperature, extreme minimum temperature and extreme precipitation events in the last 45 a are investigated. Results show that: (1)The climatological annual extreme high temperature in west part of Jiangsu are higher than that in the east, but the extreme low temperatures increase south-ward evidently. The frequency of the extreme precipitation events decrease from the north to the south.(2)Increasing trends of the extreme high temperature are found over both the central and southern regions, but a weak decreasing trend in north-western region. The extreme low temperatures increase significantly over most regions. Increasing and decreasing trends are found in the frequencies of the extreme precipitation events over the south and north parts respectively, but no evident long-term trend in central Jiangsu.(3)Regional differences exist in the inter-annual and inter-decadal varibilities of the extreme high, low temperatures and extreme precipitation events.