juliensimon/esa-exomars-tgo-observations

ESA ExoMars Trace Gas Orbiter (TGO)任务的完整观测元数据目录，用于研究火星大气、表面和次表面。自2016年10月进入轨道以来，TGO的主要科学目标是以前所未有的灵敏度研究火星大气，寻找可能指示活跃地质或生物过程的痕量气体（如甲烷）。任务还绘制了次表面氢（水冰的替代指标）并捕获了高分辨率的彩色和立体表面图像。TGO携带了四种科学仪器：ACS（大气化学套件，三个红外光谱仪，达到万亿分之一的灵敏度）、CaSSIS（彩色和立体表面成像系统，约4.5米/像素）、FREND（高分辨率超热中子探测器，绘制次表面氢）和NOMAD（火星发现的天底和掩星观测，紫外/可见光/红外光谱仪套件）。TGO的大气测量对火星大气中的甲烷设定了最严格的上限。ACS和NOMAD的观测揭示了关于大气尘埃、水蒸气垂直剖面和驱动水从火星逃逸的机制的新细节。FREND生成了近地表水当量氢的精细地图。CaSSIS图像捕捉了活跃的表面过程，包括反复出现的斜坡线、尘埃魔鬼轨迹和新的撞击坑。每一行代表来自ESA行星科学档案（PSA）的一个观测或数据颗粒，符合EPN-TAP标准，包含时间、空间覆盖、仪器参数和访问URL。

Complete observation metadata catalog from the ESA ExoMars Trace Gas Orbiter (TGO) mission -- studying Mars atmosphere, surface, and subsurface since the spacecraft entered orbit in October 2016. TGOs primary scientific goal is to study the Martian atmosphere with unprecedented sensitivity, searching for trace gases such as methane that could indicate active geological or biological processes. The mission also maps subsurface hydrogen (a proxy for water ice) and captures high-resolution color and stereo surface images. TGO carries four science instruments: ACS (Atmospheric Chemistry Suite, three infrared spectrometers achieving parts-per-trillion sensitivity), CaSSIS (Colour and Stereo Surface Imaging System, ~4.5 m/pixel), FREND (Fine Resolution Epithermal Neutron Detector, maps subsurface hydrogen), and NOMAD (Nadir and Occultation for Mars Discovery, UV/visible/IR spectrometer suite). TGOs atmospheric measurements have placed the most stringent upper limits on methane in the Martian atmosphere. ACS and NOMAD observations have revealed new details about atmospheric dust, water vapor vertical profiles, and the mechanisms driving water escape from Mars. FREND has produced refined maps of near-surface water-equivalent hydrogen. CaSSIS images active surface processes including recurring slope lineae, dust devil tracks, and fresh impact craters. Each row represents one observation or data granule from the ESA Planetary Science Archive (PSA), conforming to the EPN-TAP standard, with timing, spatial coverage, instrument parameters, and access URLs.