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Near-real-time CO2 monitoring based on atmospheric observations at HAT and YON

A near-real-time estimation method for fossil-fuel-derived CO2 emissions from China based on atmospheric observations at HAT and YON

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Atmospheric Observation

Location of Hateruma and Yonaguni Island in Asia

Hateruma Island Station

arrow prompting to link Outline of Hateruma and Cape Ochi-ishi stations

Data reference Hateruma Island CO2 DOI:10.17595/20160901.001

Data reference Hateruma Island CH4 DOI:10.17595/20160901.003

Observation point in Yonaguni Island

arrow prompting to link Japan Meteorological Agency｜Observation sites in Yonaguni Island(jma.go.jp)...(Only available in Japanese)

Data reference CO2 data of Yonaguni Island (WDCGG)

Data reference CH4 data of Yonaguni Island (WDCGG)

Concentration change graph of CO2 and CH4

Atmospheric CO2 and CH4 at HAT and YON

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Method

Atmospheric flows from China

Graph of observed atmospheric concentration variations

Assumption

During wintertime (Jan.-Mar.), the atmospheric variability ratio (ΔCO2/ΔCH4) reflects the CO2/CH4 emission ratio in China

Calculation Method of Variation Ratio

Arrow prompting detailed explanation of calculation method

Details（PDF 368KB）

References

Near-real-time estimation of fossil fuel CO2 emissions from China based on atmospheric observations on Hateruma and Yonaguni Islands, Japan(SpringerOpen)

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Estimated change rate of CO2 emissions from China

(The change rate compared to the 9-year average (2011-2019) areis plotted in the following figures.)

Graph of CO2 emissions 2023

Graph of CO2 emissions 2022

Graph of CO2 emissions 2021

Graph of CO2 emissions 2020

Data reference

Data（text 6.7KB）