| 新疆及周边中亚地区中亚低涡背景下云中液态水分布研究 |
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| 引用本文： | 梁倩,光莹,刘琼,李建刚,陈勇航,杨莲梅,辛渝,刘统强,黄观.新疆及周边中亚地区中亚低涡背景下云中液态水分布研究[J].干旱区地理,2020,43(1):72-78. |
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| 作者姓名： | 梁倩 光莹 刘琼 李建刚 陈勇航 杨莲梅 辛渝 刘统强 黄观 |
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| 作者单位： | 1东华大学环境科学与工程学院，上海201620；
2中国气象局乌鲁木齐沙漠气象研究所，新疆乌鲁木齐830002 |
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| 基金项目： | 科技部全球变化及应对专项(2017YFA0603500)；科技部公益性行业科研专项 (GYHY201506009)；2015年新疆高层次人才引进工程；国家自然科学基金项目(41675026，41175026)；中国沙漠气象科学基金项目（Sqj2018001） |
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| 摘 要： | 利用2003—2014年5~9月中亚低涡发生时的AIRS Version 6 Level 2卫星资料，分析中亚低涡活动规律以及云中液态水空间分布。结果表明：（1） 北涡型中亚低涡共发生97次，南涡型共88次。中亚低涡中心更易向南移动。（2） 整体来看，云中液态水呈现山区多盆地少的趋势，在帕米尔高原、天山和昆仑山脉的山区以及咸海附近均大于100×10-6 kg·m-2。在准噶尔盆地、哈密盆地和塔里木盆地东部地区小于1×10-6 kg·m-2。（3） 中亚低涡发生路径越偏南，云中液态水柱越低。关于云中液态水柱，北涡路径较南涡路径更多。研究结果将为进一步认识中亚低涡强降水天气系统提供参考。
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| 关 键 词： | 中亚低涡 南涡 北涡 移动路径 月际变化 云中液态水 |
| 收稿时间： | 2019-04-24 |
Distribution of total cloud liquid water in Xinjiang and its surrounding Central Asia under the background of low vortex in Central Asia |
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| LIANG Qian,GUANG Ying,LIU Qiong,LI Jian-gang,CHEN Yong-hang,YANG Lian-mei,XIN Yu,LIU Tong-qiang,HUANG Guan.Distribution of total cloud liquid water in Xinjiang and its surrounding Central Asia under the background of low vortex in Central Asia[J].Arid Land Geography,2020,43(1):72-78. |
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| Authors: | LIANG Qian GUANG Ying LIU Qiong LI Jian-gang CHEN Yong-hang YANG Lian-mei XIN Yu LIU Tong-qiang HUANG Guan |
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| Institution: | 1
College of Environmental Science and Engineering,Donghua University,Shanghai
201620,China;2.China Meteorological Administration,Institute
of Desert Meteorology,Urumqi 830002,Xinjiang, China |
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| Abstract: | Xinjiang, China and surrounding Central Asia region belong to
the same typical arid and semi-arid climate. Water resources are scarce and surface vegetation is
scarce. Once a sudden heavy precipitation occurs, it is easy to threaten the water conservancy system. The central Asian vortex is the main system that causes
heavy precipitation in Xinjiang and the surrounding Central Asian region. The precipitation process includes the transformation
of water vapor and ice particles in the atmosphere. The liquid water in clouds can interact with these
water molecules to maintain the balance of water budget in the atmosphere. In order to study the liquid water in clouds under the
background of the central Asian vortexes in Xinjiang, observation data are needed. Based on the AIRS Version 6 Level 2 satellite data
from May to September in 2003 and 2014, the activity of the central Asian Vortex and the
spatial distribution of liquid water in clouds are analyzed. In the process of satellite data acquisition and
processing, the data of all
pixels in 0.25×0.25 grid points are
averaged first, then interpolated to
each grid point, and the monthly
average spatial distribution map is drawn according to the grid points. The results show as follows: (1) The Northern Vortex
Type of the central Asian vortexes occurred 97 times. The Southern Vortex Type of the central Asian vortexes
occurred 88 times. The activity center
of the central Asian vortexes is more likely to move southward. The monthly frequency of the North Vortex in summer
and half a year shows a single peak type. The monthly frequency of the North Vortex in summer
and during half a year shows a “W” shape. (2) Overall, the liquid water in clouds tends to be more in the
mountainous areas and less in the basin areas. It is more than 100×10-6 kg·m-2 in the mountainous areas along the
Tianshan and Kunlun Mountains and in the vicinity of the Aral Sea in the Pamir
Plateau. In Junggar Basin, Hami Basin and the eastern Tarim Basin, it is less than 1×10-6 kg·m-2.This is because the Himalayas and
Kunlun Mountains prevent water vapor from entering Xinjiang from the Indian
Ocean. (3) The more southward the occurrence path of the central Asian vortexes
was, he lower the liquid water content in the cloud was. The cloud liquid water content in the North vortex
path is higher than that in the South vortex path. The above research could provide a new early warning
index for heavy rainfall in this area. |
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| Keywords: | the Central Asian vortexes south vortex north vortex movement path monthly variation total cloud liquid water |
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