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The influence of the COVID‐19 pandemic on urban CO2 emissions was investigated using atmospheric observations in the residential area (approximately 4 × 105 m2) in Tokyo, Japan. The measured CO2… Click to show full abstract
The influence of the COVID‐19 pandemic on urban CO2 emissions was investigated using atmospheric observations in the residential area (approximately 4 × 105 m2) in Tokyo, Japan. The measured CO2 flux decreased by 20% ± 3% in April–May 2020 compared to the same period during the past few years. The exchange ratio of O2 and CO2 revealed the breakdown of emission sources; the decrease of flux was due to the decrease in liquid fuel consumption, while household gas fuel consumption was slightly increased; this was also supported by the simultaneously measured CO:CO2 concentration ratio. A human‐activity analysis in the flux footprint area supported the results of the observation; car traffic decreased and household gas consumption increased.
Journal Title: Geophysical Research Letters
Year Published: 2021
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