干旱区生态环境知识资源中心(Arid): 东亚、北非干旱半干旱区边界层高度的特征研究

Arid

	东亚、北非干旱半干旱区边界层高度的特征研究
其他题名	Study on the Characteristics of Boundary Layer Height in Arid and Semiarid Regions of East Asia and North Africa
	徐潇然 1; 赵艳茹 2; 黄山 3; 毛文茜 1; 郭燕玲 1; 张文煜 1
来源期刊	高原气象
ISSN	1000-0534
出版年	2019
卷号	38 期号:5 页码:1038-1047
中文摘要	采用再分析资料ERA-20C对东亚、北非干旱半干旱区一百多年边界层高度(Boundary Layer Height,BLH)的时空变化特征进行比较研究,结果揭示了两个地区不同气候区BLH空间分布和时间变化的差异性。结果表明,BLH的空间分布与气候干湿程度密切相关,同时受海拔以及河流、湖泊分布等的影响;干旱区、半干旱-半湿润过渡区的BLH在东亚和北非均为升高趋势;极端干旱区、干旱-半干旱过渡区、半干旱区的BLH在东亚为升高趋势,在北非为降低趋势;极端干旱区对干旱半干旱区整体BLH年际变化贡献最小,东亚为11.05%,北非为3.68%;东亚半干旱区年际变化贡献最大23.74%,北非半干旱-半湿润过渡区年际变化贡献最大28.89%。两个地区BLH的变化均包含周期为60年、30年、10年、5~7年和2~4年的振荡,在长时间尺度的周期变化中,两个地区的BLH基本呈反位相关系,在短时间尺度的周期变化中,呈反位相、同位相交替转换的关系;BLH的长期变化趋势,东亚各季节均为升高趋势,北非只有冬季为升高趋势;BLH年际变化,夏季占主导地位,东亚年际变化贡献率是58.50%,北非年际变化贡献率是57.52%,北非秋季年际变化贡献率是东亚地区的2倍多。
英文摘要	The Boundary Layer Height (BLH) of the arid and semiarid regions in East Asia and North Africa (1900-2010) is compared by using the reanalysis data of ERA-20C of the European center.The result reveals differences of spatial distribution and time variation of different climate zones' BLH in the two regions.It shows that there is a close relationship between the spatial distribution of the BLH and the degree of climate wetting and drying,and is also affected by the altitude and the distribution of rivers and lakes.The BLH in the arid and semi-arid-semihumid transition zones is increasing in East Asia and North Africa.The BLH in the extreme arid region,the arid-semiarid transition region and the semiarid region is increasing in East Asia but decreasing in North Africa.Extreme arid regions contributed the least to the overall annual change of BLH in arid and semiarid regions,with 11.05% in East Asia and 3.68% in North Africa.In East Asia,semi-arid regions had the largest contribution of 23.74%,while in North Africa semiarid-semihumid transition zones have the largest contribution of 28.89%.The changes of BLH in both regions contain oscillations with periods of 60 a,30 a,10 a,5~7 a and 2~4 a.In the long-term cyclical changes,the BLH of the two regions are basically in an anti-phase relationship,and in the short time scales,it is in the relationship between the anti-phase and the same phase alternates.In the long-term change of BLH,the BLH of each season in East Asia is increasing in 111 years,while the BLH in North Africa is increasing in winter and decreasing in the other three seasons.Among the interannual changes of BLH,summer dominates the interannual changes of BLH in the whole region,with East Asia contributing 58.50% to inter-annual changes and North Africa contributing 57.52% to inter-annual changes.And the annual change contribution rate of autumn in North Africa is more than twice that of East Asia.
中文关键词	东亚 ; 北非 ; 干旱半干旱区 ; 边界层高度 ; 特征
英文关键词	Arid and semiarid regions East Asia North Africa boundary layer height characteristics
语种	中文
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6607070
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315792
作者单位	1.兰州大学大气科学学院, 兰州, 甘肃 730000, 中国; 2.复旦大学大气与海洋科学系,大气科学研究院, 上海 200438, 中国; 3.甘肃省人工影响天气办公室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	徐潇然,赵艳茹,黄山,等. 东亚、北非干旱半干旱区边界层高度的特征研究[J],2019,38(5):1038-1047.
APA	徐潇然,赵艳茹,黄山,毛文茜,郭燕玲,&张文煜.(2019).东亚、北非干旱半干旱区边界层高度的特征研究.高原气象,38(5),1038-1047.
MLA	徐潇然,et al."东亚、北非干旱半干旱区边界层高度的特征研究".高原气象 38.5(2019):1038-1047.