2022
DOI: 10.1029/2021rg000736
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How Well Do We Understand the Land‐Ocean‐Atmosphere Carbon Cycle?

Abstract: Fossil fuel combustion, land use change and other human activities have increased the atmospheric carbon dioxide (CO2) abundance by about 50% since the beginning of the industrial age. The atmospheric CO2 growth rates would have been much larger if natural sinks in the land biosphere and ocean had not removed over half of this anthropogenic CO2. As these CO2 emissions grew, uptake by the ocean increased in response to increases in atmospheric CO2 partial pressure (pCO2). On land, gross primary production also … Show more

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Cited by 57 publications
(40 citation statements)
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“…Here we present the quantification of CO 2 emission reductions at the European Union's largest CO 2 point source, the Bełchatów Power Station in Poland, by adapting the Nassar et al (2021) method for the Orbiting Carbon Observatory 3 (OCO-3), thus demonstrating CO2M's second objective in a case study on a large power plant. Baseline CO 2 observations near Bełchatów were made in March 2017 with OCO-2 (Nassar et al, 2021;Crisp et al, 2022). Using the new CO 2 mapping capability of OCO-3 (Taylor et al, 2020) at Bełchatów from April 2020 to June 2022, we determine emission reductions consistent with reported hourly power generation changes.…”
Section: Introductionmentioning
confidence: 86%
“…Here we present the quantification of CO 2 emission reductions at the European Union's largest CO 2 point source, the Bełchatów Power Station in Poland, by adapting the Nassar et al (2021) method for the Orbiting Carbon Observatory 3 (OCO-3), thus demonstrating CO2M's second objective in a case study on a large power plant. Baseline CO 2 observations near Bełchatów were made in March 2017 with OCO-2 (Nassar et al, 2021;Crisp et al, 2022). Using the new CO 2 mapping capability of OCO-3 (Taylor et al, 2020) at Bełchatów from April 2020 to June 2022, we determine emission reductions consistent with reported hourly power generation changes.…”
Section: Introductionmentioning
confidence: 86%
“…Observation-based products that incorporate observations of surface ocean pCO 2 include both natural and anthropogenic carbon in the resulting pCO 2 and CO 2 flux product. This is the net CO 2 flux (F net = F natural + F ant ) (Crisp et al, 2022). The natural outgassing of riverine carbon is understood to be the dominant component of F natural (Aumont et al, 2001;Crisp et al, 2022;Hauck et al, 2020).…”
Section: Anthropogenic Carbon Fluxmentioning
confidence: 99%
“…This is the net CO 2 flux (F net = F natural + F ant ) (Crisp et al, 2022). The natural outgassing of riverine carbon is understood to be the dominant component of F natural (Aumont et al, 2001;Crisp et al, 2022;Hauck et al, 2020). Additional non-riverine components such as outgassing due to ocean circulation change have been proposed for 1994-2007 (Gruber et al, 2019), with large uncertainty in magnitude and no evidence of long-term impact (Crisp et al, 2022); these are assumed to be zero here.…”
Section: Anthropogenic Carbon Fluxmentioning
confidence: 99%
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“…The past few years have seen a drastic increase in EO data available for monitoring the atmospheric concentration of trace gases, vegetation cover, status and biomass and other relevant ECVs such soil-moisture, fires, permafrost, etc. [ 16 , 28 , 74 ].…”
Section: Introductionmentioning
confidence: 99%