IMAGE FUV SI plots of O/N2 Ratios

This data set consists of images of thermospheric
O/N2 column density ratios at 2-min resolution during times of strong
geomagnetic storms (Dst.LT.-80nT) of 2000-2005. The ratios are generated
from dayside airglow observations of the IMAGE Far Ultraviolet (FUV)
Spectrographic Imager (SI). The SI has a peak response at the OI 135.6 nm
oxygen emission line and a bandpass of 131.0 to 140.0 nm which includes
the LBH band from N2 molecules. For each O/N2 plot, there is a plot of the
SI image from which the O/N2 plot was generated, and there is an IDL saveset
of the content of the O/N2 maps. The Information URL of this descriptor
identifies detailed discussions of the derivations of O/N2 rations from the
SI images.

本数据集收录了2000-2005年期间强地磁暴（Dst < -80nT）时段内、分辨率为2分钟的热层O/N₂柱密度比图像。该比值数据由IMAGE远紫外（Far Ultraviolet, FUV）分光成像仪（Spectrographic Imager, SI）的日间气辉观测结果生成。此成像仪在氧原子OI 135.6纳米发射谱线处具备峰值响应，通带范围为131.0至140.0纳米，该波段涵盖了氮分子（N₂）的莱曼-伯奇-霍普金斯（LBH）带。针对每一幅O/N₂图像，均附带用于生成该图像的原始SI影像，同时还提供O/N₂地图内容的IDL保存集。本描述文档的信息网址可查询关于从SI图像推导O/N₂比值的详细研讨内容。