DWM07 global empirical model of upper thermospheric storm-induced disturbance winds
DWM07 global empirical model of upper thermospheric storm-induced disturbance winds
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DOI：
10.1029/2008ja013541
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发表时间：
2008-11
影响因子：
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通讯作者：
J. Emmert;D. Drob;G. Shepherd;G. Hernández;M. Jarvis;J. Meriwether;R. Niciejewski;D. Sipler;C. Tepley
中科院分区：
文献类型：
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作者：
J. Emmert;D. Drob;G. Shepherd;G. Hernández;M. Jarvis;J. Meriwether;R. Niciejewski;D. Sipler;C. Tepley
[1]我们提出了一个全球性的经验扰动风模式（DWM 07），代表平均地球空间风暴引起的扰动上层热层（200-600公里高度）的中性风。DWM 07取决于以下三个参数：磁纬度、磁地方时和3小时Kp地磁活动指数。纬度和当地时间的依赖性由矢量球谐函数表示（纬度为10度，当地时间为3阶），Kp依赖性由二次B样条表示。DWM 07是新的水平风模式（HWM 07）的风暴时间热层组件，在配套文件中进行了描述。DWM 07的数据来自高层大气研究卫星上的风成像干涉仪、动力学探索者2号上的风和温度光谱仪以及七个地面法布里-珀罗干涉仪。在大多数情况下，由三个数据集得到的扰动风场相互吻合良好，模式捕捉到了数据中大部分明显的气候变化。
[1] We present a global empirical disturbance wind model (DWM07) that represents average geospace-storm-induced perturbations of upper thermospheric (200–600 km altitude) neutral winds. DWM07 depends on the following three parameters: magnetic latitude, magnetic local time, and the 3-h Kp geomagnetic activity index. The latitude and local time dependences are represented by vector spherical harmonic functions (up to degree 10 in latitude and order 3 in local time), and the Kp dependence is represented by quadratic B-splines. DWM07 is the storm time thermospheric component of the new Horizontal Wind Model (HWM07), which is described in a companion paper. DWM07 is based on data from the Wind Imaging Interferometer on board the Upper Atmosphere Research Satellite, the Wind and Temperature Spectrometer on board Dynamics Explorer 2, and seven ground-based Fabry-Perot interferometers. The perturbation winds derived from the three data sets are in good mutual agreement under most conditions, and the model captures most of the climatological variations evident in the data.