Premium
Three‐dimensional model calculation of ocean uptake of bomb 14 C and implications for the global budget of bomb 14 C
Author(s) -
Duffy Philip B.,
Caldeira Ken
Publication year - 1995
Publication title -
global biogeochemical cycles
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.512
H-Index - 187
eISSN - 1944-9224
pISSN - 0886-6236
DOI - 10.1029/95gb01119
Subject(s) - ocean current , general circulation model , environmental science , pacific ocean , oceanography , ocean general circulation model , box model , nuclear explosion , period (music) , nuclear weapon , deep sea , meteorology , climatology , geology , physics , nuclear physics , climate change , acoustics
Two recent papers have suggested that there is an apparent imbalance in the global bomb 14 C budget. These results are based in part on calculations made using simple one‐dimensional ocean models. We recalculate the ocean inventory of bomb 14 C using a three‐dimensional ocean general circulation model, and find a significantly smaller inventory after about 1980 than in previous one‐dimensional model estimates. Our new estimate of the ocean inventory implies that the apparent imbalance in the global budget of bomb 14 C is smaller than previously thought and is not significantly different from zero. In addition, we use our three‐dimensional model to obtain whole ocean inventories of bomb 14 C during the Geochemical Ocean Sections Study (GEOSECS) period; these inventories can be used as benchmarks in calibrating one‐dimensional ocean models.