| 低纬纬向风年际振荡在太平洋地区的传播 |
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| 引用本文： | 林永辉,林春育.低纬纬向风年际振荡在太平洋地区的传播[J].热带气象学报,1994,10(2):140-145. |
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| 作者姓名： | 林永辉 林春育 |
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| 作者单位： | 南京大学大气科学系 |
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| 摘 要： | 利用ＮＭＣ客观分析８５０ｈＰａ（１９７４．１２－１９８８．２）和２００ｈＰａ（１９６８．３－１９８８．２）平均纬向风资料，对其准两年振荡和准３－４年振荡进行了研究。结果发现：纬向风准两年、准３－４年振荡在热带地区上、下层均一致自西向东传播，但位相相反；在中纬度地区，纬向风准两年、准３－４年振荡上、下层均盛行自西向东传播，且位相一致；西太平洋地区低层纬向风准３－４年振荡均为从南、北半球中纬度地区向赤
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| 关 键 词： | 纬向风 年际振荡 传播 太平洋地区 |
| 收稿时间： | 1993/4/14 0:00:00 |
| 修稿时间： | 1993/11/1 0:00:00 |
THE PROPAGATING FEATURES OF INTERANNUAL OSCILLAION OF ZONAL-WIND OVER THE PACIFIC OCEAN |
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| Lin Yonghui and Lin Chunyu.THE PROPAGATING FEATURES OF INTERANNUAL OSCILLAION OF ZONAL-WIND OVER THE PACIFIC OCEAN[J].Journal of Tropical Meteorology,1994,10(2):140-145. |
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| Authors: | Lin Yonghui and Lin Chunyu |
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| Institution: | Dept.of Atmospheric sciences, Nanjing University, 210093;Dept.of Atmospheric sciences, Nanjing University, 210093 |
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| Abstract: | Using mean zonal winds objectively analysed by NMC for 850 hPa (Dec. 1974-Feb. 1988) and 200 hPa (Mar. 1968-Feb. 1988), quasi-biennial and quasi-3-to-4-year oscillation are invenstigated. It is found that the two oscillations are propagating from west to east at all levels, being out of paase for the tropics but in phase for the mid-latitudes; for the latter oscillations in West Pacific, it travels equatorially from both mid-latitudes at low-levels while from south to north through a well-defined channel at 175-140°W at upper levels with wavenumber 1 in meridionality. |
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| Keywords: | Zonal wind Interannual oscillation Propagation |
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