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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Variability of water vapor in the tropical upper troposphere as measured by the Microwave Limb Sounder on UARS
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Variability of water vapor in the tropical upper troposphere as measured by the Microwave Limb Sounder on UARS

机译:用UARS的微波测深仪测量热带对流层上水汽的变化。

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The Microwave Limb Sounder (MLS), an instrument on the Upper Atmosphere Research Satellite (UARS), measures water vapor in the upper troposphere, with best sensitivity at the standard UARS level at 215 hPa. In this paper, we analyze the MLS observations with a view to characterizing the temporal and zonal variations of upper tropospheric water vapor between 20 degrees N and 20 degrees S. Time series of water vapor throughout the tropics show a strong annual cycle with maximum amplitude at 20 degrees N and 90 degrees E. An intraseasonal cycle with a period of 30-85 days is evident over the Western Pacific at latitudes from 10 degrees N to 20 degrees S. The cycle is associated with eastward propagating disturbances of zonal wavenumbers 1-2, suggesting that this intraseasonal cycle is related to the Madden-Julian oscillation. [References: 38]
机译:上层大气研究卫星(UARS)上的仪器微波四肢测深仪(MLS)测量对流层上层的水蒸气,在215 hPa的标准UARS水平下具有最佳灵敏度。在本文中,我们分析了MLS观测结果,以表征20°N和20°S之间对流层上层水汽的时间和纬向变化。整个热带地区水汽的时间序列显示出一个强大的年周期,其最大振幅为北纬20度和东经90度。在北太平洋从北纬10度到南纬20度处,西太平洋明显出现了30-85天的季节内周期。该周期与纬向波数1-2的向东传播干扰有关,表明这个季节内周期与马登-朱利安振荡有关。 [参考:38]

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