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Global GOSAT, OCO-2 and OCO-3 Solar Induced Chlorophyll Fluorescence Datasets
Earth System Science Data ( IF 11.4 ) Pub Date : 2021-09-29 , DOI: 10.5194/essd-2021-237
Russell Doughty , Thomas Kurosu , Nicholas Parazoo , Philipp Köhler , Yujie Wang , Ying Sun , Christian Frankenberg

Abstract. The retrieval of solar induced chlorophyll fluorescence (SIF) from space is a relatively new advance in Earth observation science, having only become feasible within the last decade. Interest in SIF data has grown exponentially, and the retrieval of SIF and the provision of SIF data products has become an important and formal component of spaceborne Earth observation missions. Here, we describe the global Level 2 SIF Lite data products for the Greenhouse Gases Observing Satellite (GOSAT), the Orbiting Carbon Observatory-2 (OCO-2), and OCO-3 platforms, which are provided for each platform in daily netCDF files. We also outline the methods used to retrieve SIF and estimate uncertainty, describe all the data fields, and provide users the background information necessary for the proper use and interpretation of the data, such as considerations of retrieval noise, sun-sensor geometry, the indirect relationship between SIF and photosynthesis, and differences among the three platforms and their respective data products. OCO-2 and OCO-3 have the highest spatial resolution spaceborne SIF retrievals to date, and the target and snapshot area mode observation modes of OCO-2 and OCO-3 are unique. These modes provide hundreds to thousands of SIF retrievals at biologically diverse global target sites during a single overpass, and provide an opportunity to better inform our understanding of canopy-scale vegetation SIF emission across biomes.

中文翻译:

全球 GOSAT、OCO-2 和 OCO-3 太阳能诱导叶绿素荧光数据集

摘要。从太空中提取太阳诱导叶绿素荧光 (SIF) 是地球观测科学中相对较新的进步,直到最近十年才变得可行。对 SIF 数据的兴趣呈指数级增长,SIF 的检索和 SIF 数据产品的提供已成为星载地球观测任务的重要正式组成部分。在这里,我们描述了温室气体观测卫星 (GOSAT)、轨道碳观测站 2 (OCO-2) 和 OCO-3 平台的全球 2 级 SIF Lite 数据产品,这些产品在日常 netCDF 文件中为每个平台提供. 我们还概述了用于检索 SIF 和估计不确定性的方法,描述所有数据字段,并为用户提供正确使用和解释数据所需的背景信息,例如对反演噪声的考虑、太阳传感器的几何形状、SIF 与光合作用之间的间接关系,以及三个平台及其各自数据产品之间的差异。OCO-2和OCO-3拥有迄今为止空间分辨率最高的星载SIF反演,并且OCO-2和OCO-3的目标和快照区域模式观测模式是独一无二的。这些模式在单个立交桥期间在生物多样性的全球目标站点提供成百上千的 SIF 检索,并提供机会更好地了解我们对跨生物群落的冠层尺度植被 SIF 排放的理解。OCO-2和OCO-3拥有迄今为止空间分辨率最高的星载SIF反演,并且OCO-2和OCO-3的目标和快照区域模式观测模式是独一无二的。这些模式在单个立交桥期间在生物多样性的全球目标站点提供成百上千的 SIF 检索,并提供机会更好地了解我们对跨生物群落的冠层尺度植被 SIF 排放的理解。OCO-2和OCO-3拥有迄今为止空间分辨率最高的星载SIF反演,并且OCO-2和OCO-3的目标和快照区域模式观测模式是独一无二的。这些模式在单个立交桥期间在生物多样性的全球目标站点提供成百上千的 SIF 检索,并提供机会更好地了解我们对跨生物群落的冠层尺度植被 SIF 排放的理解。
更新日期:2021-09-29
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