| Budget Amount *help |
¥45,500,000 (Direct Cost: ¥35,000,000、Indirect Cost: ¥10,500,000)
Fiscal Year 2014: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2013: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2012: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2011: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2010: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Outline of Final Research Achievements |
We have developed an atmospheric general circulation model-based chemistry transport model (ACTM) in JAMSTEC for simulating the major greenhouse gases (GHGs) and ozone depleting substances (ODSs). The development of simple ACTM was essential because most of these gases are either lost in troposphere by reacting with hydroxyl (OH) radicals in troposphere or photolysis in the stratosphere. Efforts have been made to constrain OH in troposphere using a proxy species (CH3CCl3), and to evaluate interhemispheric transport using SF6 in ACTM. We have led and participated in the TransCom-CH4 model intercomparison experiment.
Following the validation of transport and chemistry, inverse modeling of emissions have been conducted. We proposed significantly higher summer-time emissions of HCFC-22 and HFC-134a.
The fluxes of CO2 and CH4 are estimated for 53-84 regions using surface observation networks and aircraft measurements. We have contributed to some of the analyses in Chapter 6 of the IPCC AR5.
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