A factorial analysis of the marine carbon cycle and ocean circulation controls on atmospheric CO2 -: art. no. GB4027

被引：17
|
作者：
Cameron, DR
Lenton, TM
Ridgwell, AJ
Shepherd, JG
Marsh, R
Yool, A
机构：
[1] Ctr Ecol & Hydrol, Penicuik EH26 0QB, Midlothian, Scotland
[2] Univ E Anglia, Sch Environm Sci, Norwich NR4 7TJ, Norfolk, England
[3] Univ British Columbia, Dept Earth & Ocean Sci, Vancouver, BC V6T 1Z4, Canada
[4] Natl Oceanog Ctr, Southampton SO14 3ZH, Hants, England
来源：
GLOBAL BIOGEOCHEMICAL CYCLES | 2005年 / 19卷 / 04期
基金：
英国自然环境研究理事会;
关键词：
D O I：
10.1029/2005GB002489
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A factorial experiment with a new Earth system model of intermediate complexity is used to assess the sensitivity of atmospheric CO2 to organic, carbonate and solubility pumps, ocean circulation state, and climate feedback. An analysis of variance of the results reveals that the organic, carbonate, and solubility pumps act multiplicatively and account for 94% of the variance of atmospheric CO2. The organic pump explains 63% (89 ppm), the solubility pump 24% (55 ppm), the carbonate pump 6% (28 ppm), and ocean circulation 0.3% (12 ppm) of the variance. Removing all pumps increases atmospheric CO2 from 278 to 525 ppm. Including interactions with all the pumps increases the effects of ocean circulation from 12 to 56 ppm. However, the ocean circulation states used are unlikely to span the full range of possible states. Changes in Pacific circulation have more effect on atmospheric CO2 than Atlantic circulation.
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页数：12
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