A warm layer in the nightside mesosphere of Mars
A warm layer in the nightside mesosphere of Mars
复制标题
火星夜间中间层的温暖层
DOI：
10.1029/2019gl085646
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
and J. I. Deighan
中科院分区：
文献类型：
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作者：
Nakagawa;H.;S. K. Jain;N. M. Schneider;F. Montmessin;R. V. Yelle;F. Jiang;L. Verdier;T. Kuroda;N. Yoshida;H. Fujiwara;T. Imamura;N. Terada;K. Terada;K. Seki;H. Groller;and J. I. Deighan
我们报告了由火星大气和挥发性演化/成像紫外光谱仪对夜间温度剖面进行的一组新的恒星掩星测量，这些测量为火星第 33-34 年 Ls= 0-180° 期间火星夜间中间层 70 至 90 公里高度之间反复出现的暖空气层提供了证据。夜间剖面显示，从赤道到北半球中纬度地区约 80 公里处，大气温度反复出现峰值。火星气候数据库的预测有一个温暖层，其幅度要小得多。观测到的峰值振幅比模型预测的峰值振幅大 90 K。在温暖层中可以看到波数 3 结构，这些结构可能是热潮或静止行星波的特征，其振幅比预测大两倍。
We report a new set of stellar occultation measurements for nightside temperature profiles made by the Mars Atmosphere and Volatile EvolutioN/Imaging Ultraviolet Spectrograph that provide evidence for a recurring layer of warm air between 70 and 90 km altitudes in the nightside mesosphere of Mars duringLs= 0–180° in Martian Year 33–34. The nightside profiles reveal a recurring peak of atmospheric temperature around 80 km over the equator to the middle latitudes in the northern hemisphere. The predictions of the Mars Climate Database have a warm layer with much smaller amplitudes. The observed peak amplitudes are larger than those predicted by the model by up to 90 K. Wavenumber‐3 structures are seen in the warm layer that are potentially signatures of thermal tides or stationary planetary waves, with amplitudes two times larger than predicted.