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Quality controls, bias, and seasonality of CO2columns in the boreal forest with Orbiting Carbon Observatory-2, Total Carbon Column Observing Network, and EM27/SUN measurements

Jacobs, Nicole; Simpson, William R.; Wunch, Debra; O'Dell, Christopher W.; Osterman, Gregory B.; Hase, Frank; Blumenstock, Thomas; Tu, Qiansi; Frey, Matthias; Dubey, Manvendra K.; Parker, Harrison A.; Kivi, Rigel; Heikkinen, Pauli

Abstract:
Seasonal CO$_{2}$ exchange in the boreal forest plays an important role in the global carbon budget and in driving interannual variability in seasonal cycles of atmospheric CO$_{2}$. Satellite-based observations from polar orbiting satellites like the Orbiting Carbon Observatory-2 (OCO-2) offer an opportunity to characterize boreal forest seasonal cycles across longitudes with a spatially and temporally rich data set, but data quality controls and biases still require vetting at high latitudes. With the objective of improving data availability at northern, terrestrial high latitudes, this study evaluates quality control methods and biases of OCO-2 retrievals of atmospheric column-averaged dry air mole fractions of CO$_{2}$ (X$_{CO2}$) in boreal forest regions. In addition to the standard quality control (QC) filters recommended for the Atmospheric Carbon Observations from Space (ACOS) B8 (B8 QC) and ACOS B9 (B9 QC) OCO-2 retrievals, a third set of quality control filters were specifically tailored to boreal forest observations (boreal QC) with the goal of increasing data availability at high latitudes without sacrificing data quality. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000126112
Veröffentlicht am 12.11.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Institut für Automation und angewandte Informatik (IAI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1867-8548
KITopen-ID: 1000126112
Erschienen in Atmospheric measurement techniques
Band 13
Heft 9
Seiten 5033–5063
Vorab online veröffentlicht am 28.09.2020
Nachgewiesen in Scopus
Web of Science
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