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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Global Distribution and Variations of NO Infrared Radiative Flux and Its Responses to Solar Activity and Geomagnetic Activity in the Thermosphere
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Global Distribution and Variations of NO Infrared Radiative Flux and Its Responses to Solar Activity and Geomagnetic Activity in the Thermosphere

机译：全球分布和变化的红外太阳能辐射通量及其响应活动和地磁活动热大气层

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摘要

The global distribution and variations of NO infrared radiative flux (NO-IRF) are presented during 2002-2016 in the thermosphere covering 100-280 km altitude based on Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) data set. For investigating the spatial variations of the mutual relationship between NO-IRF and solar activity, the altitude ranges from 100 km to 280 km are divided into 90 altitude bins, and the latitude regions of 83°S-83°N are divided into 16 latitude bins. By processing about 1.8E9 NO-IRF observation values from about 5E6 vertical nighttime profiles recorded in SABER data set, we obtained more than 4.1E8 samples of NO-IRF. The annual-mean values of NO-IRF are then calculated by all available NO-IRF samples within each latitude and altitude bin. Local latitudinal maxima in NO-IRF are found between 120 and 145 km altitude, and the maximum NO-IRF located at polar regions are 3 times more than that of the minimum at equatorial region. The influences of solar and geomagnetic activity on the spatial variations of NO-IRF are investigated. Both the NO-IRF and its response to solar and geomagnetic activity show nearly symmetric distribution between the two hemispheres. It is demonstrated that the observed changes in NO-IRF at altitudes between 100 and 225 km correlate well with the changes in solar activity. The NO-IRF at solar maximum is about 4 times than that at solar minimum, and the current maximum of NO-IRF in 2014 is less than 70% of the prior maximum in 2001. For the first time, the response ranges of the NO-IRF to solar and geomagnetic activity at different altitudes and latitudes are reported.
机译：在全球的分布和变化提出了红外辐射通量(NO-IRF)2002 - 2016年期间热大气层100 - 280公里的高空探测的基础上使用宽带发射辐射线测定大气(剑)数据集。变化之间的相互关系NO-IRF和太阳活动的高度范围从100公里到280公里分为90海拔和纬度地区的箱子中83°s - 83°N分为16个纬度垃圾箱。处理关于1.8 e9 NO-IRF观测值从5 e6垂直夜间概要文件记录在军刀的数据集,我们得到更多的比4.1 e8 NO-IRF样品。所有可用的NO-IRF然后计算NO-IRF样本在每个纬度和海拔箱子120至145公里的高度,最大值NO-IRF位于极地地区是3倍比最低在赤道地区。太阳和地磁活动的影响NO-IRF的空间变化调查。太阳和地磁活动显示近两个之间的对称分布半球。NO-IRF海拔100的变化225公里与太阳的变化相关联活动。倍,在太阳活动极小期,电流最多2014年NO-IRF小于70%的在2001年之前最大。响应的NO-IRF太阳能和范围在不同的海拔和地磁活动纬度报告。

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