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$BBj!!L\!'(BHow good are ocean carbon cycle models?

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How good are ocean carbon cycle models? ($B>>K\(B $B9nH~(B) $BH/I=MW;](B :

  
 Until the early 1990s, ocean carbon cycle models have been the primary tool 
 to learn how anthropogenic carbon emitted to the atmosphere was partitioned 
 among the atmosphere, ocean, and by inference land.  However, the advent of 
 atmospheric oxygen abundance measurements made ocean carbon cycle models 
 irrelevant in this regard.  One may further question the utility of ocean 
 carbon cycle models for future carbon cycle studies, given the recent 
 development of climate-carbon coupled models.  Here I will argue that ocean 
 carbon cycle models are nevertheless useful in understanding the spatially 
 heterogeneous uptake and storage of anthropogenic carbon.  At the same time, 
 I will demonstrate that currently available ocean carbon cycle models vary 
 widely in how well they can simulate the uptake of anthropogenic tracers, 
 including carbon, bomb radiocarbon, and chlorofluorocarbons.  Finally, means 
 to quantitatively intercompare and evaluate model skill is discussed. 
  

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mail-to:momoko@ees.hokudai.ac.jp / Tel: 011-706-2359