干旱区生态环境知识资源中心(Arid): A1B情景下东亚地区未来春季沙尘变化趋势预估

Arid

	A1B情景下东亚地区未来春季沙尘变化趋势预估
其他题名	Prediction on Dust in Spring during 2015-2100 over East Asia under A1B Scenario
	宿兴涛 1; 张志标 1; 欧磊 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:2 页码:315-320
中文摘要	采用区域气候与沙尘耦合模式RegCM4-Dust,模拟研究了A1B情景下东亚地区未来(20152100年)春季沙尘变化趋势。结果表明:(1)总体上,东亚沙尘源区起尘通量与沉降通量存在明显的振荡特征,而沙尘光学厚度呈现显著的波动减小趋势;源区下游沙尘光学厚度和沉降通量均呈现显著的波动增大趋势。(2)沙尘子源区中,仅塔克拉玛干沙漠及周边地区起尘通量有显著波动减少趋势,速度达-2.1%/10 a;萨雷耶西克阿特劳沙漠和呼伦贝尔沙地沙尘光学厚度减小速度最快,分别达到-2.8%/10 a、-2.3%/10 a。(3)未来,中国华北南部、黄淮以及长江中下游地区以及中国东、南部近海春季沙尘光学厚度增速均为1.5%/10 a;中国近海沙尘沉降通量显著上升,速度达1.9%/10 a。(4)地面风速尤其是最大风速变化是导致起尘通量变化的主要因素,而影响光学厚度的主要因素是地面最大风速。
英文摘要	A regional climate model RegCM4 coupled with an on-line dust module is used to predict the future trend of East Asian dust in spring from 2015 to 2100.Based on the simulation results,there generally exists obvious oscillation characteristics of the dust emission flux (DEF)and dust deposition flux (DDF). The model also captures the significant fluctuating and descending trend of the dust optical depth(DOD)over East Asian dust sources.At the same time,the DOD and DDF appear significant fluctuating and ascending trend over downstream areas of dust sources.Only the DEF over the Taklimakan Desert and its circumjacent areas presents significant fluctuating and descending trend over all East Asian dust sub-sources.The maximal falling velocity of DOD occurs over Saryesik-Atyrau Desert and Hulun Buir Desert with the values up to -2.8%/10 a and -2.3%/10 a respectively.In addition,the rising velocity of DOD is 1.5%/10 a over southern North China,Huanghuai Area,the middle and lower reaches of Yangtze River and eastern and southern Chinese offshore.The significant rise(1.9%/10 a)of DDF may do harm to the marine environment of our country.Compared to the maximum surface wind speed for DOD,the mean surface wind speed especially maximum surface wind speed are the main factors of the DEF.
中文关键词	A1B情景 ; 区域气候模式 ; 沙尘 ; 未来预测
英文关键词	A1B scenario regional climate model dust future prediction
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:5980759
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237085
作者单位	1.北京应用气象研究所, 北京 100029, 中国; 2.61741部队, 北京 100094, 中国
推荐引用方式 GB/T 7714	宿兴涛,张志标,欧磊. A1B情景下东亚地区未来春季沙尘变化趋势预估[J],2017,37(2):315-320.
APA	宿兴涛,张志标,&欧磊.(2017).A1B情景下东亚地区未来春季沙尘变化趋势预估.中国沙漠,37(2),315-320.
MLA	宿兴涛,et al."A1B情景下东亚地区未来春季沙尘变化趋势预估".中国沙漠 37.2(2017):315-320.