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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >A Comparison of Quiet Time Thermospheric Winds Between FPI Observations and Model Calculations
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A Comparison of Quiet Time Thermospheric Winds Between FPI Observations and Model Calculations

机译：比较安静的时间Thermospheric大风FPI观测和模型之间的计算

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摘要

We investigate local time, seasonal, and longitudinal variations of thermospheric horizontal winds at midlatitudes during geomagnetically quiet times by comparing winds from observations, an empirical wind model, and a numerical model. The observations are from three Fabry-Perot interferometers (FPIs), the empirical model is the most recent version of the Horizontal Wind Model 14 (HWM14), and the numerical model is the Thermosphere-Ionosphere-Electrodynamics General Circulation Model of the National Center for Atmospheric Research. The three FPI stations are located at Xinglong (geographically 40.2°N, 117.4°E; geomagnetically 35°N) and Kelan (geographically 38.7°N, 111.6°E; geomagnetically 34°N) in China and at Millstone Hill (geographically 42.6°N, 71.5°W; geomagnetically 52°N) in United States. The results show that the winds at Millstone Hill are more southward and more westward than those at Xinglong and Kelan in all seasons; the directional reversal time of zonal winds is also earlier at Millstone Hill than at the other two stations. Thermosphere-Ionosphere-Electrodynamics General Circulation Model shows better agreement with FPI observations in the winter months compared to summer, and in general best replicates those measurements taken at Millstone Hill. HWM14 generally produces agreement with quiet time midlatitude neutral wind measurements, with HWM14 meridional winds comparing very well throughout most of a year. HWM14 model-data discrepancies occur mainly in the zonal winds during the winter season. Overall, HWM14 predicts MH FPI observations slightly better than it does for the data from the two Asian stations.
机译：我们研究当地时间、季节和纵向变化thermospheric水平风在情理之中通过比较风眼睛安静的倍从观察,实证风范,数值模型。法布里-珀罗干涉仪(fpi)经验模型的最新版本水平风模型14 (HWM14),数值模型是Thermosphere-Ionosphere-Electrodynamics一般国家中心的循环模型大气研究。在地理上位于兴隆(40.2°N,117.4°E;(地理上38.7°N, 111.6°E;34°N)在中国和在磨石山(地理上42.6°N, 71.5°W;52°N)在美国。风在磨石希尔更向南和西比那些在兴隆和乌克兰所有的季节;纬向风也早在磨石比其他两个站。Thermosphere-Ionosphere-Electrodynamics一般与FPI循环模型显示更好的协议观察在冬季相比夏天,一般来说最好的复制测量在磨石。通常与安静的时间生产协议与HWM14中间纬度中性风测量,经向风比较好大多数人一年。主要发生在冬季纬向风的季节。观察略优于它的数据从两个亚洲电台。

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