| DPM模型在塔克拉玛干沙漠地区的适用性研究 |
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| 引用本文： | 张晨亮,周成龙,陶陶,蒋聚金.DPM模型在塔克拉玛干沙漠地区的适用性研究[J].新疆气象,2024,18(3):143-149. |
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| 作者姓名： | 张晨亮 周成龙 陶陶 蒋聚金 |
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| 作者单位： | 新疆维吾尔自治区气象技术装备保障中心,中国气象局乌鲁木齐沙漠气象研究所/新疆塔克拉玛干沙漠气象国家野外科学观测研究站/中国气象局塔克拉玛干沙漠气象野外科学试验基地/新疆维吾尔自治区沙漠气象与沙尘暴重点实验室,新疆维吾尔自治区气象信息中心,新疆巴音郭楞蒙古自治州库尔勒市人工影响天气办公室 |
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| 基金项目： | 国家自然科学基金项目（41905009）；新疆维吾尔自治区自然科学基金（2021D01A197） |
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| 摘 要： | 局限于仅有观测数据的情况下，利用模拟手段研究土壤风蚀引起的粉尘释放是非常必要的，有助于评估区域土壤风蚀及大气环境质量和气候效应。本文通过分析塔克拉玛干沙漠观测站不同高度层风速及计算平均摩阻风速，利用DPM模型计算粉尘释放通量，综合分析了摩阻风速与粉尘释放通量的相互关系。结果表明：1）不同观测日不同高度层的风速变化各不相同，2m高度层风速的变化范围是0.05～7.73 m·s-1，4m高度层风速的变化范围是0.09～7.19 m·s-1，10m高度层风速的变化范围是0.5～8.09 m·s-1。2）4月1日～4月30日各个观测日24小时内平均摩阻风速分别为0.423 m·s-1、0.344 m·s-1、0.271 m·s-1、0.343 m·s-1、0.161 m·s-1、0.315 m·s-1，其变化范围为0.16～0.42 m·s-1。3）DPM模型研究发现实测跃移通量约为模拟值的122%，模拟值与实测值相关性较好，R2为0.91。上述研究结果对定量评估区域乃至全疆的土壤风蚀对粉尘释放通量的影响具有重要意义。
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| 关 键 词： | DPM模型 土壤风蚀 塔克拉玛干沙漠 摩阻风速 |
| 收稿时间： | 2022/5/6 0:00:00 |
| 修稿时间： | 2022/10/11 0:00:00 |
Study on dust release flux in Taklimakan Desert |
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| ZHANG Chen-liang,ZHOU Cheng-long,TAO Tao and Jiang Ju-jin.Study on dust release flux in Taklimakan Desert[J].Bimonthly of Xinjiang Meteorology,2024,18(3):143-149. |
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| Authors: | ZHANG Chen-liang ZHOU Cheng-long TAO Tao and Jiang Ju-jin |
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| Institution: | Xinjiang Meteorological Technology and Equipment support Center,Urumqi Desert Meteorological Institute of China Meteorological Administration / Xinjiang Taklimakan Desert Meteorological National Field Scientific Observation and Research Station / Taklimakan Desert Meteorological Field ScientificTest Base of China Meteorological Administration / Key Laboratory of Desert Meteorology and Dust Storm of Xinjiang Uygur Autonomous Region,Xinjiang Meteorological Information Center,Weather Modification Office of Korla City,Bayingol Mongolian Autonomous Prefecture |
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| Abstract: | Exploring the influence of wind erosion erosion on dust emission is helpful to evaluate regional soil wind erosion, atmospheric environmental quality, and climate effect. In the case of only observed data, it is necessary to study the dust release caused by soil wind erosion by simulation. In this paper, the variation of wind speed at different altitudes in Taklimakan Desert and the average friction wind speed are analyzed, and the dust release flux is calculated by DPM model. The relationship between the average friction wind speed and the dust release flux is comprehensively analyzed. The results show that: 1) The variation of wind speed at different altitudes is different in different observation days. The variation range of wind speed at 2 m height is 0.05~7.73 m·s-1, the variation range of wind speed at 4 m height is 0.09~ 7.19 m·s-1, and the variation range of wind speed at 10 m height is 0.5~8.09 m·s-1. 2) From April 1 to April 30, the average friction wind speed within 24 hours of each observation day was 0.423 m·s-1, 0.344 m·s-1, 0.271 m·s-1, 0.343 m·s-1, 0.161 m·s-1 and 0.315 m·s-1, respectively, and its variation range was 0.16-0.42 m·s-1. 3) The measured jump flux is about 122 % of the simulated value, and the correlation between the simulated value and the measured value is good, with the quadratic coefficient of 0.91. The above research results are of great significance to quantitatively evaluate the impact of soil wind erosion on dust emission flux in the region and even the whole Xinjiang. |
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| Keywords: | DPM model Soil wind erosion Taklimakan Desert Friction velocity |
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