| 东亚持续强冬季风影响赤道海表温度初始异常的数值试验研究 |
| |
| 引用本文： | 吴国雄,尉艺,刘辉.东亚持续强冬季风影响赤道海表温度初始异常的数值试验研究[J].气象学报,2000,58(6):641-652. |
| |
| 作者姓名： | 吴国雄 尉艺 刘辉 |
| |
| 作者单位： | 中国科学院大气物理研究所大气科学和地球流体力学国家重点实验室(LASG),北京,100029 |
| |
| 基金项目： | 国家自然科学基金!委员会编号 4 95752 65，4 96351 70，4 982 30 0 2，国家重中之重项目 !96-90 8-0 4 -0 3的联合资助 |
| |
| 摘 要： | 通过数值模拟和理论分析 ,文中指出在强东亚季风期间不仅在欧亚大陆和北印度洋出现强大的反气旋环流异常 ,而且通过海气相互作用在北太平洋西部和西北部形成异常气旋式流场 ;在其东南部产生异常反气旋式流场。在这种流场异常的驱动下赤道西太平洋西风加强 ,海面升高 ,海表温度上升 ,赤道中东印度洋和东太平洋东风加强 ,海面降低 ,海表温度下降。证明由于海表温度异常及海表温度变化趋势存在积分关系 ,因此持续的强东亚冬季风所强迫的沿赤道海表温度变化趋势的上述分布的强讯号可以在海洋中存在近一年之久 ,为尔后赤道太平洋 ENSO事件的可能发展提供初始条件 ,也为跨季度气候预测提供前期讯号
|
| 关 键 词： | 海表感热加热 北太平洋海气相互作用 海表温度变化趋势 海表温度异常的持续性 |
| 收稿时间： | 1999/5/28 0:00:00 |
| 修稿时间： | 1999/10/22 0:00:00 |
IMPACTS OF PERSISTENTLY STRONG ASIAN WINTER MONSOON ON EQUATORIAL SEA SURFACE TEMPERATURE ANOMALY AS SIMULATED IN CLIMATE MODEL |
| |
| Wu Guo Xiong,Wei Yi and Liu Hui.IMPACTS OF PERSISTENTLY STRONG ASIAN WINTER MONSOON ON EQUATORIAL SEA SURFACE TEMPERATURE ANOMALY AS SIMULATED IN CLIMATE MODEL[J].Acta Meteorologica Sinica,2000,58(6):641-652. |
| |
| Authors: | Wu Guo Xiong Wei Yi and Liu Hui |
| |
| Institution: | State Key Lab of Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Academia Sinica, Beijing, 100080 China;State Key Lab of Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Academia Sinica, Beijing, 100080 China;State Key Lab of Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Academia Sinica, Beijing, 100080 China |
| |
| Abstract: | By comparing the outputs from control and sensitivity experiment of the LASG/IAP GOALS climate system model, the impacts of anomalous strong Asian winter monsoon on the initiation of the equator sea surface temperature (SST) anomaly in the Pacific Ocean are studied. It is shown that the strong Siberian cold bursts during winter not only forms huge surface anticyclone over the Eurasian Continent, but also generates anomalous cyclone circulation over the western and northwestern Pacific and anti cyclone circulation over the southeastern Pacific. The latter is shown to be a result of air sea interaction over the Northern Pacific. It causes westerly wind anomaly, rise of sea level and increase of (SST) along the western equatorial Pacific and easterly wind anomaly and decrease in both sea level and SST along the equatorial eastern Indian and Pacific oceans. It is also shown that SST anomaly is the integral of SST tendency. As strong signals, the aforementioned SST changes along the equator forced by strong winter monsoon can be retained in ocean as SST anomaly for more than half a year. This then provides initial conditions for the development of possible ENSO events along the equator, as well as precursors for inter seasonal climate prediction. |
| |
| Keywords: | Sea surface sensible heating Air sea interaction over the Northern Pacific Sea surface temperature variation Persistence of sea surface temperature anomal( |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《气象学报》浏览原始摘要信息 |
| 点击此处可从《气象学报》下载免费的PDF全文 |
|
