干旱区生态环境知识资源中心(Arid): 一次连续沙尘过程中沙尘气溶胶的垂直传输特征

Arid

	一次连续沙尘过程中沙尘气溶胶的垂直传输特征
其他题名	A study of the vertical transmission characteristics of dust aerosol during a continuous dust event
	方雪; 田文寿; 韩元元; 张健恺; 丁林梅
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2017
卷号	53 期号:6 页码:815-825
中文摘要	使用WRF-Chem模式,以美国国家环境预报中心的FNL客观分析资料作为初始场和边界条件对2013年3月8-13日发生于中国北方地区的一次连续沙尘天气过程进行了模拟,利用卫星资料和兰州大学半干旱气候与环境观测站气溶胶光学厚度资料对模拟结果进行了对比验证.结果表明,此次沙尘天气过程有3大沙源地,分别为塔克拉玛干沙漠、巴丹吉林沙漠和腾格里沙漠,除腾格里沙漠有3次起沙过程外,其余沙源地均有2次连续的起沙过程.起沙后沙尘气溶胶向西南输送翻越青藏高原东侧向高空输送,在不考虑气溶胶的直接、间接辐射效应以及湿沉降过程的条件下,沙尘气溶胶起沙2 d后到达200 hPa,进入下平流层,强上升运动是其进入下平流层的主要原因.
英文摘要	The process of a continuous sand dust weather event in northern China from the 8th to 13th of March, 2013 was analyzed with the weather research forecast-chemistry (WRF-Chem) model. The simulation study was based on the initial field and boundary conditions provided by FNL data of national centers for environmental prediction. The simulation results were compared and verified with satellite data and aerosol optical thickness data from the semi-arid climate observatory and laboratory. The results indicated that three sediment sources contributed to the continuous sand dust, i.e. the Taklamakan, Badain Jaran and Tengger Deserts. Dust mobilization happened three times in the Tengger Desert while two continuous sub- processes of sand happened twice in both the Taklamakan and the Badain Jaran. After dust mobilization in the deserts, dust aerosol was forced to transport to southwest and climb over the east of the Qinghai-Tibet Plateau, leading dust aerosol to be transported to the upper atmosphere. Two days later, without the direct and indirect radiative effect of aerosol and the wet deposition, dust aerosol arrived at 200 hPa and entered the lower stratosphere due to its strong ascending movement.
中文关键词	WRF-Chem模式 ; 沙尘气溶胶 ; 下平流层 ; 强上升运动
英文关键词	weather research forecast- chemistry model dust aerosol lower stratosphere strong upward movement
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:6146897
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/2XILL650/236257
作者单位	兰州大学大气科学学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	方雪,田文寿,韩元元,等. 一次连续沙尘过程中沙尘气溶胶的垂直传输特征[J]. 兰州大学,2017,53(6):815-825.
APA	方雪,田文寿,韩元元,张健恺,&丁林梅.(2017).一次连续沙尘过程中沙尘气溶胶的垂直传输特征.兰州大学学报. 自然科学版,53(6),815-825.
MLA	方雪,et al."一次连续沙尘过程中沙尘气溶胶的垂直传输特征".兰州大学学报. 自然科学版 53.6(2017):815-825.