cause analysis of methane emission abnormality area in global and estimation of methane balance

2016 Fiscal Year Final Research Report

• Project/Area Number: 25340014
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Tokyo University of Information Sciences
• Principal Investigator: Park Jonggeol 東京情報大学, 総合情報学部, 准教授 (40337770)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: メタンソース / 熱帯雨林 / 降水量 / 植生分布

Outline of Final Research Achievements

Since the beginning of the industrial revolution,the atmospheric concentration of the Methane concentration has increased more than double. This high variability makes large-scale estimates difficult and means that average emissions levels include a large degree of estimated uncertainty. In this study, the CH4 source area is extracted by estimating the emission as the difference between CH4 concentration in time series observed by SCIAMACHY and the background concentrations of CH4.
It is assumed that CH4 concentration is negligible over ocean and that the CH4 concentration over the ocean is due to the advection of CH4 from the land.The background concentration of CH4 on the land was defined as CH4 concentration over the ocean in the same latitude.The estimated CH4 emissions from the land exhibited the source of CH4 are not only in paddy fields but also in broadleaf evergreen area in South America and Central Africa.

Free Research Field

リモートセンシング