• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Equatorial Kelvin waves as revealed by EOS Microwave Limb Sounder observations and European Centre for Medium-Range Weather Forecasts analyses: Evidence for slow Kelvin waves of zonal wave number 3
【2h】

Equatorial Kelvin waves as revealed by EOS Microwave Limb Sounder observations and European Centre for Medium-Range Weather Forecasts analyses: Evidence for slow Kelvin waves of zonal wave number 3

机译：EOS微波肢体测深仪观测和欧洲中距离天气预报中心揭示的赤道开尔文波：纬向波数为3的慢开尔文波的证据

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

[1] Temperature and ozone observations from the Microwave Limb Sounder (MLS) on the EOS Aura satellite are used to study equatorial wave activity in the autumn of 2005. In contrast to previous observations for the same season in other years, the temperature anomalies in the middle and lower tropical stratosphere are found to be characterized by a strong wave-like eastward progression with zonal wave number equal to 3. Extended empirical orthogonal function (EOF) analysis reveals that the wave 3 components detected in the temperature anomalies correspond to a slow Kelvin wave with a period of 8 days and a phase speed of 19 m/s. Fluctuations associated with this Kelvin wave mode are also apparent in ozone profiles. Moreover, as expected by linear theory, the ozone fluctuations observed in the lower stratosphere are in phase with the temperature perturbations, and peak around 20–30 hPa where the mean ozone mixing ratios have the steepest vertical gradient. A search for other Kelvin wave modes has also been made using both the MLS observations and the analyses from one experiment where MLS ozone profiles are assimilated into the European Centre for Medium-Range Weather Forecasts (ECMWF) data assimilation system via a 6-hourly 3D var scheme. Our results show that the characteristics of the wave activity detected in the ECMWF temperature and ozone analyses are in good agreement with MLS data.
机译：[1]利用EOS Aura卫星上的微波探空仪（MLS）测得的温度和臭氧，可用于研究2005年秋季的赤道波活动。与以往其他年份同一季节的观测结果相比，该地区的温度异常非常明显。中低层平流层的特征是强波状向东发展，纬向波数等于3。扩展的经验正交函数（EOF）分析显示，在温度异常中检测到的波3分量对应于慢波。开尔文波，周期为8天，相位速度为19 m / s。在臭氧分布图中，与此开尔文波模式相关的波动也很明显。此外，正如线性理论所预期的那样，在平流层下部观测到的臭氧波动与温度扰动同相，并在20-30 hPa附近达到峰值，在此处平均臭氧混合比具有最陡的垂直梯度。还使用MLS观测值和一项实验进行了分析，以寻找其他开尔文波模式，在该实验中，MLS臭氧剖面通过6小时3D被吸收到了欧洲中距离天气预报中心（ECMWF）数据吸收系统中var方案。我们的结果表明，在ECMWF温度和臭氧分析中检测到的波活动特征与MLS数据非常吻合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号