| 塔克拉玛干沙漠中尺度对流系统的时空分布特征 |
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| 引用本文： | 马禹,王旭.塔克拉玛干沙漠中尺度对流系统的时空分布特征[J].干旱区资源与环境,2013(6):167-171. |
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| 作者姓名： | 马禹 王旭 |
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| 作者单位： | 新疆维吾尔自治区气候中心;新疆维吾尔自治区人工影响天气办公室 |
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| 基金项目： | 国家科技部公益性行业(气象)科研专项-沙漠及周边地区灾害性天气监测预报警报技术(GYHY201006012)资助 |
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| 摘 要： | 采用云图增强和图像叠加的方法,通过对1998-2002年5年GMS-5静止气象卫星红外云图数字资料的普查,共获得33个发生在塔克拉玛干沙漠的中-β尺度的对流系统(MCS),研究了MCS的地理分布及生命史特点。结果表明:空间上沙漠西部和北部是MCS的多发区,季节上,MCS主要出现在春末和整个夏季,以5月最多。时间上MCS具有明显的夜发性,多数MCS形成于午后到午夜(16:00-1:00),夜间至凌晨消散,持续4～6h,生命史偏短。
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| 关 键 词： | 红外云图 中尺度对流系统 塔克拉玛干沙漠 地理分布 生命史 |
Geographic distribution and life cycle of mesoscale convective system over Taklimakan desert |
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| MA Yu,WANG Xu.Geographic distribution and life cycle of mesoscale convective system over Taklimakan desert[J].Journal of Arid Land Resources and Environment,2013(6):167-171. |
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| Authors: | MA Yu WANG Xu |
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| Institution: | 1.Climatic Center of Xingjiang Uygur Autonomous Region of China,Urumqi 830002,P.R.China;2.Weather Modification Office of Xingjiang Uygur Autonomous Region of China,Urumqi 830002,P.R.China) |
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| Abstract: | By using the methods of enhanced infrared image and image superposition,33 meso-convective systems(MCSs) were found in Taklimakan desert during 1998-2002 by the GMS-5 satellite infrared images,the geographic distribution and the character of life cycle of MCSs were given.MCSs generated most frequently in the northern and western Taklimakan desert.MCSs occurred from April to July,and more frequently in May.The MCSs of Taklimakan desert were distictly nocturnal,majority occurred from afternoon to midnight,and dissipated from night to dawn,the duration of life cycle was 4-6h,the life cycle was shorter. |
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| Keywords: | infrared image mesoscale convective system Taklimakan desert geographic distribution life cycle |
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