干旱区生态环境知识资源中心(Arid): 东亚和北美地区温度和降水变化特征

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	东亚和北美地区温度和降水变化特征
其他题名	Characteristics of Temperature and Precipitation in East Asia and North America
	杨朝虹; 张镭; 苑广辉; 郭琪; 孙乃秀; 杜韬
来源期刊	高原气象
ISSN	1000-0534
出版年	2018
卷号	37 期号:3 页码:662-674
中文摘要	温湿变化的年代际特征及区域差异是全球气候变化研究的重要内容之一。利用1901-2014年东英吉利大学气候研究中心(CRU) TS3.20月地表温度和降水资料分析了东亚和北美地区温度和降水变化的季节性和区域特征,并利用1979-2015年欧洲中心天气预报中心(ECMWF) ERA-Interim日最高/最低温和降水资料进一步分析了东亚和北美地区受极端天气影响的区域所占比例的年际变化。结果发现,近110多年来东亚地区[0.134 ℃·(10a)~(-1)]的增温趋势高于北美地区[0.102 ℃·(10a)~(-1)],东亚干旱半干旱区的增温趋势低于东亚地区,而北美干旱半干旱区的增温趋势高于北美地区。季节性特征表现为在冷季增温明显,东亚地区冷季增温约是暖季的2.9倍,北美地区为1.3倍。季节性增温存在明显的纬度差异,在东亚和北美高纬度地区(45°N以北)冷季温度的增长速率通常比暖季大。东亚和北美的降水增加趋势均高于北半球,暖季降水增加明显并且主要发生在东亚和北美高纬度地区(45°N以北) 。东亚和北美的干旱半干旱区的降水没有明显增加趋势,分别为0.04 mm·(10a)~(-1)和0.07 mm·(10a)~(-1)。东亚和北美地区及东亚和北美的干旱半干旱区受极端高温影响的面积有增加趋势,受极端低温影响的面积没有明显变化,受极端降水影响的面积有减少趋势。北美和东亚地区以及北美和东亚干旱半干旱区的月平均温度对PDO(Pacific Decadal Oscillation)的响应比ENSO(El Nino Southern Oscillation)明显,月平均降水对ENSO的响应比PDO明显。
英文摘要	The interdecadal and regional differences of temperature and precipitation are one of the important contents of global climate change research.In this paper,the seasonal and regional characteristics of temperature and precipitation variation in East Asia and North America were analyzed by using the CRU TS3.20 data from the Climatic Research Unit (CRU) of the University of East Anglia during the period of 1901-2014.Furthermore,we also analyzed the interannual variation of the area ratio that affected by extreme weather events in East Asia and North America by using the ERA-Interim data from the European Centre for Medium-Range Weather Forecasts (ECMWF) during the period of 1979-2015.It is found that the warming trend in East Asia [0.134 ℃·(10a)~(-1)] is higher than that in North America [0.102 ℃·(10a)~(-1)]over the past 110 years.The warming trend of arid and semi-arid regions in East Asia is slightly lower than that in East Asia,while the warming trend of arid and semi-arid regions in North America is slightly higher than that in North America.As for seasonal characteristics,the warming trend is obvious in the cold season.It is 2.9 (1.3) times higher in East Asia (North America) during cold season than during warm season.There is a significant latitude difference in seasonal warming trend.The warming rate for high latitude (45°N) region in East Asia and North America is generally greater during cold season than during warm season.The East Asia and North America have a greater increase in precipitation than Northern Hemisphere.The increase of precipitation is obvious during warm season and mainly occurs in the high latitudes of East Asia and North America (45°N).The increase of precipitation is not obvious for arid and semi-arid regions in East Asia [0.04 mm·(10a)~(-1)]and North America [0.07 mm·(10a)~(-1)].In East Asia and North America as well as arid and semi-arid regions,the area affected by extreme high temperature has an increasing trend,while the variation of the area affected by extreme low temperature is not obvious,and the area affected by extreme precipitation has a decreasing trend.The monthly average temperature in North American and East Asia and the arid and semiarid regions is more responsive to PDO (Pacific Decadal Oscillation) than that to ENSO (El Nino Southern Oscillation),and the monthly average precipitation has a stronger response to ENSO than PDO.
中文关键词	东亚 ; 北美 ; 干旱半干旱区 ; 温度和降水特征
英文关键词	East Asia North America arid and semi-arid regions characteristics of temperature and precipitation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6274554
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237753
作者单位	兰州大学大气科学学院, 半干旱气候变化教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	杨朝虹,张镭,苑广辉,等. 东亚和北美地区温度和降水变化特征[J]. 兰州大学,2018,37(3):662-674.
APA	杨朝虹,张镭,苑广辉,郭琪,孙乃秀,&杜韬.(2018).东亚和北美地区温度和降水变化特征.高原气象,37(3),662-674.
MLA	杨朝虹,et al."东亚和北美地区温度和降水变化特征".高原气象 37.3(2018):662-674.