Preprints
https://doi.org/10.5194/essd-2021-237
https://doi.org/10.5194/essd-2021-237

  29 Sep 2021

29 Sep 2021

Review status: this preprint is currently under review for the journal ESSD.

Global GOSAT, OCO-2 and OCO-3 Solar Induced Chlorophyll Fluorescence Datasets

Russell Doughty1, Thomas Kurosu2, Nicholas Parazoo2, Philipp Köhler1, Yujie Wang1, Ying Sun3, and Christian Frankenberg1,2 Russell Doughty et al.
  • 1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, 91125, USA
  • 2Jet Propulsion Laboratory, Tropospheric Composition, Pasadena, CA, 91109, USA
  • 3Soil and Crop Sciences Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA

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.

Russell Doughty et al.

Status: open (until 24 Nov 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-237', Anonymous Referee #1, 21 Oct 2021 reply

Russell Doughty et al.

Data sets

OCO-3 Level 2 bias-corrected solar-induced fluorescence and other select fields from the IMAP-DOAS algorithm aggregated as daily files OCO-3 Science Team, Michael Gunson, Annmarie Eldering https://disc.gsfc.nasa.gov/datacollection/OCO3_L2_Lite_SIF_EarlyR.html

GOSAT Level 2 bias-corrected solar-induced fluorescence and other select fields from the IMAP-DOAS algorithm aggregated as daily files OCO Science Team, Michael Gunson, Annmarie Eldering https://disc.gsfc.nasa.gov/

OCO-2 Level 2 bias-corrected solar-induced fluorescence and other select fields from the IMAP-DOAS algorithm aggregated as daily files OCO-2 Science Team, Michael Gunson, Annmarie Eldering https://doi.org/10.5067/XO2LBBNPO010

Russell Doughty et al.

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Short summary
We describe and compare solar induced chlorophyll fluorescence data produced by NASA from the Greenhouse Gases Observing Satellite (GOSAT), the Orbiting Carbon Observatory-2 (OCO-2), and OCO-3 platforms.