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Preliminary result of observation in the Antarctic Sea using pCO2 autonomous buoy

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Preliminary result of observation in the Antarctic Sea using pCO2 autonomous buoy

Material type
文書・図像類
Author
渡邉, 修一ほか
Publisher
-
Publication date
2013-11-15
Material Format
Digital
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Note (General):

The total ocean uptake flux including the anthropogenic CO2 was estimated to be 2.0±1.0Pg-C/yr in a reference year 2000 by Takahashi et al.(2009). Ho...

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  • National Institute of Polar Research Repository

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Digital

Material Type
文書・図像類
Author/Editor
渡邉, 修一
中野, 善之
飯田, 高大
高村, 友海
脇田, 昌英
Watanabe, Shuichi
Nakano, Yoshiyuki
Iida, Takahiro
Takamura, Tomomi
Wakita, Masahide
Publication Date
2013-11-15
Publication Date (W3CDTF)
2013-11-15
Alternative Title
二酸化炭素分圧測定ブイを用いた南極海域の観測の予備的結果
Text Language Code
eng
Target Audience
一般
Note (General)
The total ocean uptake flux including the anthropogenic CO2 was estimated to be 2.0±1.0Pg-C/yr in a reference year 2000 by Takahashi et al.(2009). However, contribution of the seaonal ice-freezone in the southern ocean was about 0.06 Pg-C/yr. This estimate flux was smaller than that estimeted previously by Takahashi et al.(2002). Though Lenton, Matear and Tilbrook (2006) suggested sampling regularly every 3 months, at every 30 degree in longitude and 3 degree in latitude is sufficient to determine the net Southern Ocean CO2 uptake which uncertenly has less then 0.1PgC/yr, This difference is due to the luck of data in the southern ocean. In this study, we distributed the pCO2 autonomous buoy systems to collect a lot of pCO2 data, which sysmtem was devloped with the support of the Japan EOS Promotion Program (JEPP), the Ministry of Education, Culture, Sports, Science and Technology (MEXT).The pCO2 autonomous buoy system was deplyed at 50.5, 53, 56, and 59oS along 110oE and 60.5 oS, 70 oE near Kerguelen Plateau December, 2012 using the icebreaker “Shirase”. Those bouys are setting 8 times pCO2 measurements/day, 5days interval. The bouys are floating over our expected area with wind driving. The pCO2 values obtained till March 2013 are between 250 and 450μatm and comparative with other data. This preliminary data will be examined carefuly and used for discussing the distribution of pCO2.
第4回極域科学シンポジウム個別セッション:[OM] 気水圏11月15日(金) 統計数理研究所 3階セミナー室1(D305)