国立研究開発法人

国立環境研究所National Institute for Environmental Studies

Whole-atmosphere Mean CO2 Concentration by GOSAT Data(GOSAT) (CO2)

“IBUKI” (GOSAT) to Detect Anthropogenic CO2 and CH4 Emissions (GOSAT) (CO2) (CH4)

400.2ppm

400.1ppm

The whole-atmosphere mean CO2 con-centration was calculated based on GOSATdata, covering from the surface to the top ofthe atmosphere (70km above the surface),collected for about 7 years since May 2009.Monthly mean CO2 concentration recorded400.2 ppm in December 2015, and CO2

trend* 400.1 ppm in February 2016,excluding seasonal fluctuations. Monthlymean CO2 concentration peaked 402.3 ppmin May 2016.

CO2 and CH4 concentrations were analyzedbased on GOSAT data for 3.5 years from June2009 to December 2012, which showed thatCO2 in mega-cities and energy industry areas,and CH4 in densely populated, intensefarming, or oil/natural gas producing areas,have the tendency for higher concentrationscompared to their surrounding environments.This demonstrates the potential utility tomonitor anthropogenic emissions** of thesegreenhouse gases from space.

The values constituting the black line show the average of 1 – 2 years.

** Higher anthropogenic CO2 concentration is found at China: Zhangjiakou, Anshan, Harbin, and Tianjin; India: Kolkata; Eastern part of Uzbekistan; Southern edge of Kazakhstan; Easternarea of Kyrgyzstan; Northern edge of Tajikistan; Northwestern part of Saudi Arabia; Jordan; US: Pittsburg, Los Angeles; Mexico: Acapulco. Higher anthropogenic CH4 concentration is foundat China: Chengdu, Chongqing; India: Kolkata, Meghalaya; Bangladesh: Dacca; Pakistan: Lahore; US: Pittsburg, New York, Los Angeles; Brazil: Campo Cerrado, Pantanal; Russia: Surgut.

CH4Regions with high concentrations of anthropogenic methane (CH4)

**

2017 1 Satellite Observation Center, National Institute for Environmental Studies, Japan Jan. 2017

©JAXA

CO2Regions with high concentrations of anthropogenic carbon dioxide (CO2)

北アメリカアジア

Photo by DAVID ILIFF (CC-BY-SA 3.0)

New York, USA

Photo by Sudhanshu Nimbalkar ( CC-BY-SA 3.0)

Chandrapur, India

Photo by Javier Blas (CC-BY-SA 3.0)

El Sahara, Lybia

Coal Mining, China

Photo by Alicia Yo (CC-BY 2.0)

アジア

北ユーラシア

北アメリカ

南アメリカ

Photo by Alicia Yo (CC-BY-SA 3.0)

Pantanal, Brazil

Luang Namtha, Laos

Photo by TeamworkZ (CC-BY-NC-SA 2.0)

“Smoky Mountain”

Photo by takas bahay (www.istorya.net)

Photo by Peer V (CC-BY-SA 3.0)

Cattle Ranch, Paraguay

Photo by Cgoodwin (CC-BY 3.0)

California, USA

© NASA

West Siberia, Russia

© NASA

Monthly mean CO2

CO2 trend

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