| 黑潮区海温对中国北方初霜冻日期的影响研究 |
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| 引用本文： | 杨明珠,陈丽娟,宋文玲.黑潮区海温对中国北方初霜冻日期的影响研究[J].气象,2013,39(9):1125-1132. |
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| 作者姓名： | 杨明珠 陈丽娟 宋文玲 |
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| 作者单位： | 国家气候中心，中国气象局气候研究开放实验室，北京 100081;国家气候中心，中国气象局气候研究开放实验室，北京 100081;国家气候中心，中国气象局气候研究开放实验室，北京 100081 |
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| 基金项目： | 国家科技支撑项目（2009BAC51B05）、国家重点基础研究发展规划(973)项目（2012CB955902）、公益性行业（气象）科研专项（GYHY201306018和GYHY201306070）、国家自然科学基金面上项目（41275073）及中国气象局短期气候预测创新团队共同资助 |
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| 摘 要： | 利用站点观测和再分析资料研究了黑潮海温（SST）与中国北方初霜冻日期的关系。结果表明，前期夏季各月及初秋黑潮区SST异常变化和中国北方秋季初霜冻日期的关系十分显著。当黑潮区SST偏高（低）时，华北大部、黄淮北部、河套北部、内蒙古中部和东北部、环渤海区域初霜冻日期偏晚（早）。进一步分析显示，夏末和初秋黑潮区SST异常主要通过影响其上空初秋及秋季局地大气环流系统，对华北、黄淮北部等地区初霜冻造成影响。当黑潮区SST偏高（低）时，我国华北至日本以东区域上空500 hPa高度场偏高（低），低层风场则出现东南（西北）风，从而导致东亚大槽偏弱（强），来自北方的冷空气活动势力被削弱（增强），从而导致上述区域初霜冻发生较常年偏晚（早）。
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| 关 键 词： | 黑潮区SST指数，初霜冻日期，环流系统 |
| 收稿时间： | 2012/12/17 0:00:00 |
| 修稿时间： | 5/3/2013 12:00:00 AM |
Impact of Kuroshio SST on First Frost Dates in Northern China |
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| YANG Mingzhu,CHEN Lijuan and SONG Wenling.Impact of Kuroshio SST on First Frost Dates in Northern China[J].Meteorological Monthly,2013,39(9):1125-1132. |
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| Authors: | YANG Mingzhu CHEN Lijuan and SONG Wenling |
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| Institution: | Laboratory for Climate Studies of CMA, National Climate Centre, Beijing 100081;Laboratory for Climate Studies of CMA, National Climate Centre, Beijing 100081;Laboratory for Climate Studies of CMA, National Climate Centre, Beijing 100081 |
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| Abstract: | The relationship between Kuroshio sea surface temperature index (KuSSTI) and the first frost dates (FFDs) in northern China are analyzed on the basis of observation data and reanalysis data. The results show that the monthly KuSSTIs of respective months of summer and early autumn have significant impacts on FFDs in northern China. The warmer (cooler) the Kuroshio SSTs are, the later (earlier) FFDs in North China, Huang Huai Region, northern Hetao Region, middle and northeastern Inner Mongolia and the region around the Bohai Sea are. Further analysis indicates that the warm (cold) Kuroshio SST anomalies significantly influence the general circulation from northern China, Japan Sea to north Pacific, increasing (decreasing) the 500 hPa geopotential height and weakening (strengthening) the East Asia trough. The lower level wind anomaly shows southeast (northwest) direction over North China and Huang Huai Region, weakening (strengthening) the cold wave from the north, so that the FFDs in North China and Huang Huai Region come later (earlier) than normal. |
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| Keywords: | Kuroshio SST index the first frost date general circulation |
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