Gemini/TEXES Spectroscopic Observations of Jupiter (March 12-14 2017)

This dataset contains Gemini/TEXES spectroscopic maps of Jupiter, acquired between March 12-14 2017 in support of NASA's Juno mission. The data and its reduction/analysis is fully described in <em>Fletcher et al. (2020), Jupiter's Equatorial Plumes and Hot Spots: Spectral Mapping from Gemini/TEXES and Juno/MWR, Journal of Geophysical Research - Planets.</em> As described in that paper, TEXES scan maps were acquired in seven groups (three on March 12, three on March 13, and one on March 14), with each group containing scan maps at 9 spectral settings (539, 587, 745, 819, 900, 960, 1165, 1248 and 2145 cm-1). Each setting spans approximately 10-20 cm-1, with variable spectral resolution as described in the article. Each scan map has been geometrically registered (i.e., latitudes, longitudes, and emission angles have been assigned), wavelength calibrated, and destriped. Radiometric calibration is in its raw form, based on TEXES observations of the telluric sky emission and a blank card in the instrument. However, we found it necessary to scale these spectra to match observations from Cassini/CIRS, using the following scale factors for all spectra: fac538= 0.9 fac587= 0.687705 fac744= 0.872656 fac819= 0.600016 fac901= 0.544984 fac960= 0.427803 fac1161=0.636066 fac1248=1.0 fac2145=1.0 The format of the individual files (IDL "save" files) is as follows: EMMIMG FLOAT = Array[721, 361] - emission angles for each point in the map HDR STRING = Array[126] - header containing information about each observation IMAGE_REDUCT FLOAT = Array[149, 183] - summed image of Jupiter from all points in a spectral scan. IMG FLOAT = Array[374, 721, 361] - cylindrically mapped Jupiter data at 374 wavenumber positions. OLAT FLOAT = Array[361] - planetographic latitudes OLON FLOAT = Array[721] - System III West longitudes. SKY FLOAT = Array[374] - sky emission on the wavenumber grid. SUBLAT FLOAT - sub-observer latitude SUBLON FLOAT - sub-observer longitude TRUESKY FLOAT = Array[374] - sky emission on the wavenumber grid. WAVENUMBER DOUBLE = Array[374] - wavenumber array本数据集包含2017年3月12日至14日为支持美国国家航空航天局（National Aeronautics and Space Administration，NASA）朱诺（Juno）任务获取的双子座/TEXES（Gemini/TEXES）木星光谱测绘图。该数据及其归约与分析过程已完整刊载于《弗莱彻等人（2020），木星赤道羽流与热点：来自双子座/TEXES与朱诺/MWR的光谱测绘，地球物理研究杂志-行星卷（Journal of Geophysical Research - Planets）》。 如该论文所述，TEXES扫描测绘图共分为7组（3组于3月12日获取，3组于3月13日获取，1组于3月14日获取），每组包含9个光谱设置下的扫描测绘图，对应波数分别为539、587、745、819、900、960、1165、1248及2145 cm⁻¹。每个光谱设置的覆盖波段范围约为10-20 cm⁻¹，光谱分辨率可变，具体细节详见该论文。 每张扫描测绘图均已完成几何配准（即已为各点赋予纬度、经度与发射角）、波长定标及去条纹处理。辐射定标处于原始状态，其基于TEXES对大气天空辐射的观测以及仪器内空白卡的测量结果。但研究团队发现需对这些光谱进行缩放以匹配卡西尼/CIRS（Cassini/CIRS）的观测数据，因此对所有光谱采用以下缩放因子： fac538 = 0.9 fac587 = 0.687705 fac744 = 0.872656 fac819 = 0.600016 fac901 = 0.544984 fac960 = 0.427803 fac1161 = 0.636066 fac1248 = 1.0 fac2145 = 1.0 单个文件（IDL"保存"文件）的格式如下： EMMIMG FLOAT = Array[721, 361] —— 测绘图各点对应的发射角 HDR STRING = Array[126] —— 包含各观测信息的头文件数组 IMAGE_REDUCT FLOAT = Array[149, 183] —— 单次光谱扫描中所有木星测点的叠加图像 IMG FLOAT = Array[374, 721, 361] —— 经圆柱投影的木星观测数据，包含374个波数位置的观测值 OLAT FLOAT = Array[361] —— 行星制图纬度（planetographic latitude） OLON FLOAT = Array[721] —— 木星第三系统西经（System III West longitudes） SKY FLOAT = Array[374] —— 波数网格上的天空辐射通量 SUBLAT FLOAT —— 亚观测点纬度 SUBLON FLOAT —— 亚观测点经度 TRUESKY FLOAT = Array[374] —— 波数网格上的真实天空辐射通量 WAVENUMBER DOUBLE = Array[374] —— 波数数组