干旱区生态环境知识资源中心(Arid): 基于LMDZ 模型的西北干旱区水汽再循环率分析

Arid

	基于LMDZ 模型的西北干旱区水汽再循环率分析
其他题名	Contribution of Moisture Recycling to Precipitation in the Arid Region in Northwest China Based on LMDZ Model
	余秀秀 1; 张明军 1; 王圣杰 2; 邱雪 1; 杜铭霞 1; 周苏娥 1; 孟鸿飞 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2019
卷号	36 期号:1 页码:29-43
中文摘要	局地水汽再循环是陆地水循环过程的重要环节。在我国西北干旱区水汽再循环的绝对量虽然有限,但对区域降水的贡献(即水汽再循环率)却不容忽视。本文基于嵌套同位素模块的LMDZ模式模拟数据,运用同位素混合模型,对西北干旱区19792007年水汽再循环率的时空特征及其作用机制进行了分析。结果表明:研究时段内,外来水汽对降水的月尺度和年尺度贡献率都明显高于再循环水汽,季节上呈夏高冬低,年际上呈逐渐上升的态势;而再循环水汽的贡献率较低,呈夏季低冬季高且逐年下降(冬半年植物蒸腾水汽的贡献率在年际上呈上升趋势)的特点。外来水汽对降水的贡献率存在空间差异,山区附近的值往往较高,荒漠平原区的值则较低。就地表蒸发与植物蒸腾而言,地表蒸发对降水的贡献率整体低于植物蒸腾,但在小范围地区也有相反的规律。外来水汽和地表蒸发水汽的贡献量与其贡献率的空间分布特征基本一致,而植物蒸腾水汽在山区的贡献量高于荒漠平原区。
英文摘要	As an important link in the process of land water cycle, the contribution of local moisture recycling to precipitation in the arid region in northwest China cannot be ignored although its absolute amount is relatively limited. Based on the isotopic data simulated by LMDZ simulations, the spatiotemporal distribution characteristics and mechanism of the contribution proportion of recycled moisture during the period from 1979 to 2007 in the arid region in northwest China were analyzed by the isotopic mixing model. Results showed that the monthly and interannual contribution rate of advection moisture to precipitation was obviously higher than that of recycled moisture during the study period, it was high in summer but low in winter,and increased gradually at annual scale. Oppositely, the monthly and interannual contribution rate of recycled moisture to precipitation was relatively low, it was low in summer but high in winter,and decreased year by year (the interannual contribution proportion of plant transpiration moisture increased in winter half year) . Spatially, the contribution proportion of advection moisture was different, and it was high in mountainous areas but low in desert plains. The contribution proportion of evaporation vapor was lower than that of plant transpiration vapor in most areas,but it was opposite in some regions. The spatial distribution of the contribution amount of advection vapor and surface evaporation vapor was consistent with its contribution rate, while the contribution amount of plant transpiration vapor was higher in mountainous areas than that in desert plains.
中文关键词	水汽再循环 ; 降水贡献率 ; 空间分布 ; 同位素混合模型 ; LMDZ 模型 ; 西北干旱区
英文关键词	moisture recycling precipitation contribution proportion spatial distribution isotopic mixing model LMDZ model arid region Northwest China
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:6414261
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239141
作者单位	1.西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国; 2.西北师范大学地理与环境科学学院;;陕西省河流湿地生态与环境重点实验室;;中国气象局乌鲁木齐沙漠气象研究所, ;;陕西省河流湿地生态与环境重点实验室;;, 兰州;;渭南;;乌鲁木齐, 甘肃;;陕西;;新疆 730070;;714099;;830002, 中国
推荐引用方式 GB/T 7714	余秀秀,张明军,王圣杰,等. 基于LMDZ 模型的西北干旱区水汽再循环率分析[J]. 西北师范大学,2019,36(1):29-43.
APA	余秀秀.,张明军.,王圣杰.,邱雪.,杜铭霞.,...&孟鸿飞.(2019).基于LMDZ 模型的西北干旱区水汽再循环率分析.干旱区研究,36(1),29-43.
MLA	余秀秀,et al."基于LMDZ 模型的西北干旱区水汽再循环率分析".干旱区研究 36.1(2019):29-43.