Reconstruction of past atmospheric CH4 concentration from the firn air data at Dome Fuji (scientific note)

• Main Authors: Satoshi Sugawara, Kenji Kawamura, Shuji Aoki, Takakiyo Nakazawa, Gen Hashida
• Format: Report
• Language: English
• Published: Institute of Earth Science, Miyagi University of Education/Center for Atmospheric and Oceanic Studies, Tohoku University/Center for Atmospheric and Oceanic Studies, Tohoku University/Center for Atmospheric and Oceanic Studies, Tohoku University/National Institute of Polar Research 2003
• Subjects: CH4; firn air; Dome Fuji; Antarctic; The Antarctic; Antarc*; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2470; http://id.nii.ac.jp/1291/00002470/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2470&item_no=1&attribute_id=18&file_no=1

Air samples were collected from different depths of the firn layer at Dome Fuji in December 1998 and analyzed for CH4 concentrations. The age distribution of CH4 in the firn was calculated by using a one-dimensional numerical model, and then the inverse method was applied to reconstruct variations o...