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Proceedings Paper

The Carbon Balance Observatory (CARBO) instrument for remote sensing of greenhouse gases from space
Author(s): Shannon Kian Zareh; Charles E. Miller; Andre Wong; Peter Sullivan; Mayer Rud; Yuri Beregovski; Daniel W. Wilson; J. Kent Wallace; Glenn Sellar; Didier Keymeulen; Cynthia B. Brooks; Annmarie Eldering; Dejian Fu; Amy Mainzer
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Paper Abstract

We present the current development of the Carbon Balance Observatory (CARBO). CARBO is a wide-swath mapping, low Earth orbit (LEO) new generation of instruments that expands on the ground-breaking CO2 and Solar Induced Fluorescence (SIF) measurements pioneered by the Orbiting Carbon Observatory (OCO-2/3) by adding CH4 and CO detection. The instrument’s spatial coverage is delivered at 2 km by 2 km resolution with a field-of-view of 10° to 15° from LEO for a ~200 km wide swath. It achieves roughly 20x better spatial coverage than the OCO-2 instrument, and 3x better Solar Induced Chlorophyll Fluorescence (SIF) detection sensitivity, in a smaller package. CARBO will measure CO2 at <1.5 ppm, CH4 at <7 ppb, CO at <5 ppb and SIF < 20%. The measurement of CO2/CH4/CO/SIF at these concentrations will significantly increase our ability to disentangle carbon fluxes into their constituent components. CARBO utilizes innovative immersion grating technology and enables high resolving power spectroscopy (roughly 20,000) in a smaller and lighter package that is more cost effective than current space-based CO2 remote sensing instruments. CARBO modules cover 4 different spectral ranges (from 740 nm to 2.3μm), where two channels will be built and field tested. CARBO’s modular architecture reduces implementation risk, accelerates access to space, and extends opportunities to a more diverse set of platforms and launch vehicles. CARBO significantly improves our understanding of the global carbon cycle. Here we discuss an overview of the design elements and focus on the expected radiometric performance of channels 1 (~760 nm) and 2 (~1600 nm).

Paper Details

Date Published: 15 October 2019
PDF: 14 pages
Proc. SPIE 11152, Remote Sensing of Clouds and the Atmosphere XXIV, 111520Z (15 October 2019); doi: 10.1117/12.2539078
Show Author Affiliations
Shannon Kian Zareh, Jet Propulsion Lab. (United States)
Charles E. Miller, Jet Propulsion Lab. (United States)
Andre Wong, Jet Propulsion Lab. (United States)
Peter Sullivan, Jet Propulsion Lab. (United States)
Mayer Rud, Jet Propulsion Lab. (United States)
Yuri Beregovski, Jet Propulsion Lab. (United States)
Daniel W. Wilson, Jet Propulsion Lab. (United States)
J. Kent Wallace, Jet Propulsion Lab. (United States)
Glenn Sellar, Jet Propulsion Lab. (United States)
Didier Keymeulen, Jet Propulsion Lab. (United States)
Cynthia B. Brooks, The Univ. of Texas at Austin (United States)
Annmarie Eldering, Jet Propulsion Lab. (United States)
Dejian Fu, Jet Propulsion Lab. (United States)
Amy Mainzer, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 11152:
Remote Sensing of Clouds and the Atmosphere XXIV
Adolfo Comerón; Evgueni I. Kassianov; Klaus Schäfer; Richard H. Picard; Konradin Weber; Upendra N. Singh, Editor(s)

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