Global observations of nitric oxide in the thermosphere
Global observations of nitric oxide in the thermosphere
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DOI：
10.1029/2002ja009458
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发表时间：
2003
影响因子：
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通讯作者：
C. Barth;K. Mankoff;S. Bailey;S. Solomon
中科院分区：
文献类型：
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作者：
C. Barth;K. Mankoff;S. Bailey;S. Solomon
[1] 从 1998 年 3 月 11 日到 2000 年 9 月 30 日的 2 1/2 年期间，极轨学生一氧化氮探测器 (SNOE) 卫星测量了低层热层 (97-150 km) 的一氧化氮密度，作为纬度、经度和高度的函数。观测结果表明，最大密度出现在 106-110 km 附近，并且密度变化很大。低纬度地区的一氧化氮密度与太阳软X射线辐照度（2~7 nm）有很好的相关性，表明低纬度和中纬度地区是太阳X射线产生了热层一氧化氮。一氧化氮是在极光纬度（60°–70°地磁）通过电子（1–10 keV）沉淀到热层中而产生的。在地磁活动频繁期间，由于经向风将一氧化氮吹向赤道，中纬度地区的一氧化氮可能会增加。
[1] Nitric oxide density in the lower thermosphere (97–150 km) has been measured from the polar-orbiting Student Nitric Oxide Explorer (SNOE) satellite as a function of latitude, longitude, and altitude for the 2 1/2 year period from 11 March 1998 until 30 September 2000. The observations show that the maximum density occurs near 106–110 km and that the density is highly variable. The nitric oxide density at low latitudes correlates well with the solar soft X-ray irradiance (2–7 nm), indicating that it is the solar X-rays that produce thermospheric nitric oxide at low and midlatitudes. Nitric oxide is produced at auroral latitudes (60°–70° geomagnetic) by the precipitation of electrons (1–10 keV) into the thermosphere. During high geomagnetic activity, increased nitric oxide may be present at midlatitudes as the result of meridional winds that carry the nitric oxide equatorward.