| 长三角地区农业与自然植被镶嵌体的变化对近地面气象场的影响评估 |
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| 引用本文： | 梁永晓,马红云,江志红,保云涛,李海俊.长三角地区农业与自然植被镶嵌体的变化对近地面气象场的影响评估[J].气象科学,2019,39(1):23-33. |
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| 作者姓名： | 梁永晓 马红云 江志红 保云涛 李海俊 |
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| 作者单位： | 南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心/大气科学学院 |
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| 基金项目： | 国家自然科学基金资助项目（41641046） |
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| 摘 要： | 利用一个中尺度数值模式WRF3.8/Noah/UCM,对长三角地区近30 a来灌溉水田显著减少,农业与自然植被镶嵌体(以下简称镶嵌体)显著增加这一现象引起的气候效应进行了5 a(2008—2012年)高分辨数值模拟。试验采用了ChinaLC土地覆盖资料,利用MODIS反照率和叶面积指数产品分别验证了ChinaLC在镶嵌体和水田之间的分类可靠性。根据研究区内台站观测资料评估了ChinaLC和WRF模式自带的USGS资料模拟结果,进一步证明土地覆盖资料ChinaLC的分类准确性,有助于提高模式的模拟性能。通过对长三角地区镶嵌体面积变化的对比试验进行分析,结果表明:区域内由灌溉水田转变为镶嵌体后,不仅会使非城市区气象条件改变,同时也会影响临近的城市区,由于非城市区增温幅度大于城市区,会导致城郊温差减弱;镶嵌体增加导致江苏西南部、浙江北部气温上升0.1～0.3℃,风速减弱0.1～0.3 m·s~(-1),比湿降低0.05～0.15 g·kg~(-1),边界层高度上升40 m。在镶嵌体显著增加的南京北部—滁州以及江苏西南部一带降水减少,南京北部—滁州地区月平均降水减少了0.6 mm·d~(-1),马鞍山—溧水降水减少了0.2 mm·d~(-1)。
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| 关 键 词： | ChinaLC 土地覆盖 镶嵌体 数值模拟 |
| 收稿时间： | 2017/9/25 0:00:00 |
| 修稿时间： | 2017/12/5 0:00:00 |
Impact assessment of changes in agricultural and natural vegetation mosaics on near-surface meteorological fields in the Yangtze River Delta |
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| LIANG Yongxiao,MA Hongyun,JIANG Zhihong,BAO Yuntao and LI Haijun.Impact assessment of changes in agricultural and natural vegetation mosaics on near-surface meteorological fields in the Yangtze River Delta[J].Scientia Meteorologica Sinica,2019,39(1):23-33. |
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| Authors: | LIANG Yongxiao MA Hongyun JIANG Zhihong BAO Yuntao and LI Haijun |
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| Institution: | Key Laboratory of Meteorological Disaster, Ministry of Education/International Joint Laboratory on Climate and Environment Change/Collaborative Innovation Center on Forecast and Evalvation of Meteorological Disasters/School of Atmospheric Sciences, Nanjing Unversity of Information Science & Technology, Nanjing 210044, China,Key Laboratory of Meteorological Disaster, Ministry of Education/International Joint Laboratory on Climate and Environment Change/Collaborative Innovation Center on Forecast and Evalvation of Meteorological Disasters/School of Atmospheric Sciences, Nanjing Unversity of Information Science & Technology, Nanjing 210044, China,Key Laboratory of Meteorological Disaster, Ministry of Education/International Joint Laboratory on Climate and Environment Change/Collaborative Innovation Center on Forecast and Evalvation of Meteorological Disasters/School of Atmospheric Sciences, Nanjing Unversity of Information Science & Technology, Nanjing 210044, China,Key Laboratory of Meteorological Disaster, Ministry of Education/International Joint Laboratory on Climate and Environment Change/Collaborative Innovation Center on Forecast and Evalvation of Meteorological Disasters/School of Atmospheric Sciences, Nanjing Unversity of Information Science & Technology, Nanjing 210044, China and Key Laboratory of Meteorological Disaster, Ministry of Education/International Joint Laboratory on Climate and Environment Change/Collaborative Innovation Center on Forecast and Evalvation of Meteorological Disasters/School of Atmospheric Sciences, Nanjing Unversity of Information Science & Technology, Nanjing 210044, China |
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| Abstract: | |
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| Keywords: | China LC land cover mosaic numerical simulation |
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