| 青藏高原典型区域沙尘天气与气候要素关系分析 |
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| 引用本文： | 苟诗薇,伍永秋,郑影华.青藏高原典型区域沙尘天气与气候要素关系分析[J].北京师范大学学报(自然科学版),2009,45(3). |
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| 作者姓名： | 苟诗薇 伍永秋 郑影华 |
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| 作者单位： | 北京师范大学防沙治沙教育部工程研究中心,北京师范大学减灾与应急管理研究院,100875,北京 |
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| 基金项目： | 国家自然科学基金资助项目(40671185);;国家科技支撑计划资助项目(2006BAD26B03) |
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| 摘 要： | 利用青藏高原沙尘活动典型区内10个站点的气象观测资料,分析了高原东北部、北部、西部、西南部近40多年来沙尘活动日数的演变规律及其与平均气温、相对湿度、平均风速、降水量等主要气候要素的相关关系.结果表明:近40年来,研究区内沙尘活动主要集中于冬、春两季,年沙尘活动日数、年均风速处于下降趋势,年均气温、年降水量呈现上升趋势,年均相对湿度变化平缓.沙尘活动日数与各气象因子在不同的时间尺度有不同的相关关系.除共和、都兰、格尔木、拉孜、山南月沙尘活动日数对月均气温滞后的正相关性显著提高外,其他站点、气候要素对于沙尘活动的影响均没有滞后效应.沙尘天气的高发期对应着暖干气候,低发期对应着冷湿气候.
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| 关 键 词： | 青藏高原 沙尘天气 气候变化 器测时期 |
ANALYSIS OF THE RELATIONSHIP BETWEEN SAND-DUST WEATHER AND CLIMATIC ELEMENT IN TYPICAL REGION OF TIBETAN PLATEAU |
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| GOU Shiwei,WU Yongqiu,ZHENG Yinghua.ANALYSIS OF THE RELATIONSHIP BETWEEN SAND-DUST WEATHER AND CLIMATIC ELEMENT IN TYPICAL REGION OF TIBETAN PLATEAU[J].Journal of Beijing Normal University(Natural Science),2009,45(3). |
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| Authors: | GOU Shiwei WU Yongqiu ZHENG Yinghua |
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| Institution: | Engineering Center of Desertification and Blown-Sand Control of Ministry of Education;Academy of Disaster Reduction and Emergency Management: Beijing Normal University;100875;Beijing;China |
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| Abstract: | Evolution of sand-dust days and correlation with mean temperature,relative humidity,average wind velocity and precipitation in northeastern,northern,western and southwestern part of Tibetan Plateau in the recent 40 years was analyzed based on meteorological data from 10 stations in the region.It was found that sand-dust activity was concentrated in winter and spring.The number of sand-dust days and annual average wind velocity tended to decrease,annual mean temperature and precipitation to increase,with ann... |
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| Keywords: | Tibetan Plateau sand-dust weather climate change modern instrumental observation period |
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