| Aura/MLS与TIMED/SABER观测全球重力波特性 |
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| 引用本文： | 杨文凯,杨钧烽,郭文杰,杨晓华,夏仲飞,张炳炎,程旋,胡雄.Aura/MLS与TIMED/SABER观测全球重力波特性[J].空间科学学报,2022,42(5):919-926. |
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| 作者姓名： | 杨文凯 杨钧烽 郭文杰 杨晓华 夏仲飞 张炳炎 程旋 胡雄 |
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| 作者单位： | 1.中国人民解放军31010部队 北京 100081 |
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| 基金项目： | 中国科学院A类战略性先导科技专项（XDA17010301），国家自然科学基金项目（41905038, 41675031,42174192, 11872128）和中国科学院国家空间科学中心“攀登计划”项目共同资助 |
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| 摘 要： | 大气重力波是临近空间环境主要大气波动之一，对全球环流具有重要影响。卫星上搭载的临边探测器能够探测临近空间大气温度，可用于临近空间大气重力波研究。利用2012－2014年Aura的微波临边探测器（MLS）和TIMED的红外临边探测器（SABER）的探测数据，对20~50 km高度的大气重力波扰动分布特征开展了分析研究，两种观测重力波活动基本一致，重力波随季节、纬度及高度的变化显著。冬季半球高纬度重力波扰动较强，赤道和夏季半球近赤道地区上空也存在明显重力波活动区域，夏季半球高纬度重力波扰动最弱。重力波扰动强度随高度增加。TIMED/SABER重力波扰动强度数值比 Aura/MLS略强。
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| 关 键 词： | 卫星数据 Aura/MLS TIMED/SABER 重力波 |
| 收稿时间： | 2021-09-05 |
Global Stratospheric Gravity Wave Characteristics by Aura/MLS and TIMED/SABER Observation Data |
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| Affiliation: | 1.31010 Troops of PLA, Beijing 1000812.Key Laboratory of Science and Technology on Environmental Space Situation Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing 100190 |
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| Abstract: | Gravity waves are one of the main atmospheric waves in near space environment and have an important impact on the global atmosphere circulation. The limb-sounding instruments on the satellites provide the atmospheric temperature, which can be used for the research of the gravity waves. The data from the Microwave Limb Sounder (MLS) on Aura and the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) on TIMED from 2012 to 2014 are used to study the global distribution characteristics of atmospheric gravity waves at the height of 20~50 km. The gravity wave activities derived from the two observations are similar to each other. Gravity waves change significantly with season, latitude and altitude. Gravity waves at high latitudes in the winter hemisphere are strongest, and that at high latitudes in the summer hemisphere are weakest. There are also obvious gravity wave activities over the equator and the subtropics in the summer hemisphere. The results show that the strength of gravity wave increases with altitude. In general, the value of gravity wave activity intensity derived from TIMED/SABER is greater than that from Aura/MLS. |
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