The Global Carbon Project, an authoritative group of dozens of international scientists who track emissions, calculated that the world will have put 37 billion US tons (34 billion metric tons) of carbon dioxide in the air in 2020.
The who, why and where of Norway's CO2 emissions from tourist travel - ScienceDirect
Historical trend and drivers of China's CO2 emissions from 2000 to 2020
World carbon dioxide emissions drop 7% in pandemic-hit 2020 - The Economic Times
Rebound in carbon emissions expected in 2021 after fall caused by Covid, Environment
COVID-19 and CO2 - San Francisco Fed
IEA: Coronavirus impact on CO2 emissions six times larger than 2008 financial crisis
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Emission Reductions From Pandemic Had Unexpected Effects on Atmosphere
Historical trend and drivers of China's CO2 emissions from 2000 to 2020
COVID-19 lockdowns behind record drop in global CO2 emissions 2020 – GCP
After a century of growth, have carbon emissions reached their peak?
World carbon dioxide emissions drop 7% in pandemic-hit 2020
Emissions Are Surging Back as Countries and States Reopen - The New York Times
Near-real-time monitoring of global CO2 emissions reveals the effects of the COVID-19 pandemic