Arguments on Oceanic Carbon Cycle of IPCC Assessments——A Test Using δ13C Budgets

Climate Change Research ›› 2009, Vol. 5 ›› Issue (00): 19-24.

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Arguments on Oceanic Carbon Cycle of IPCC Assessments——A Test Using δ¹³C Budgets

Chen Zhongxiao1, 2, Jiang Aijun2, 3, Ren Huijun2, Cheng Jun2, Kato Kikuo4, Oomori Tamotsu5

1 Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2 College of Atmospheric Science, Nanjing University of Information Science & Technology, Nanjing 210044, China; 3 Nanjing Meteorological Administration, Nanjing 210009, China; 4 Hydrospheric Atmospheric Research Center, Nagoya University, Nagoya Aichi 464-8601, Japan; 5 Faculty of Science, University of the Ryukyus, Nishihara-Cho Okinawa 903-0213, Japan

Received:1900-01-01 Revised:1900-01-01 Online:2009-10-30 Published:2009-10-30

Abstract

Abstract: By comparing the global carbon cycle of the IPCC assessment reports in 1990, 1996, 2001 and 2007, it was found that despite the estimated sizes of the main carbon reservoirs and the fluxes between them in the four reports were similar, the estimated carbon fluxes between surface and intermediate-deep sea waters were quite different. The δ¹³C budget was used to test the reasonable range of these fluxes. The results show that the IPCC assessment reports in 1996 and 2007 have overestimated, whereas those in 1990 and 2001 underestimated the fluxes between surface and intermediate-deep sea waters.

Key words: IPCC, CO₂ budget, δ¹³C, isotope fractionation

Chen Zhongxiao;;Jiang Aijun;;Ren Huijun;Cheng Jun;Kato Kikuo;Oomori Tamotsu. Arguments on Oceanic Carbon Cycle of IPCC Assessments——A Test Using δ¹³C Budgets[J]. Climate Change Research, 2009, 5(00): 19-24.

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Arguments on Oceanic Carbon Cycle of IPCC Assessments——A Test Using δ¹³C Budgets

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