Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL095396 |
On the detection of COVID-driven changes in atmospheric carbon dioxide | |
Nicole S. Lovenduski; Abhishek Chatterjee; Neil C. Swart; John C. Fyfe; Ralph F. Keeling; David Schimel | |
2021-11-11 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | We assess the detectability of COVID-like emissions reductions in global atmospheric CO2 concentrations using a suite of large ensembles conducted with an Earth system model. We find a unique fingerprint of COVID in the simulated growth rate of CO2 sampled at the locations of surface measurement sites. Negative anomalies in growth rates persist from January 2020 through December 2021, reaching a maximum in February 2021. However, this fingerprint is not formally detectable unless we force the model with unrealistically large emissions reductions (2 or 4 times the observed reductions). Internal variability and carbon-concentration feedbacks obscure the detectability of short-term emission reductions in atmospheric CO2. COVID-driven changes in the simulated, column-averaged dry air mole fractions of CO2 are eclipsed by large internal variability. Carbon-concentration feedbacks begin to operate almost immediately after the emissions reduction; these feedbacks reduce the emissions-driven signal in the atmosphere carbon reservoir and further confound signal detection. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/340927 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Nicole S. Lovenduski,Abhishek Chatterjee,Neil C. Swart,et al. On the detection of COVID-driven changes in atmospheric carbon dioxide[J]. Geophysical Research Letters,2021. |
APA | Nicole S. Lovenduski,Abhishek Chatterjee,Neil C. Swart,John C. Fyfe,Ralph F. Keeling,&David Schimel.(2021).On the detection of COVID-driven changes in atmospheric carbon dioxide.Geophysical Research Letters. |
MLA | Nicole S. Lovenduski,et al."On the detection of COVID-driven changes in atmospheric carbon dioxide".Geophysical Research Letters (2021). |
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