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Seasonal variability in the 14 C/ 12 C ratio for surface ocean water
Author(s) -
Broecker Wallace S.,
Peng TsungHung
Publication year - 1980
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl007i011p01020
Subject(s) - mixed layer , temperate climate , atmosphere (unit) , surface water , seasonality , surface layer , environmental science , oceanography , polar , biogeochemical cycle , atmospheric sciences , water mass , climatology , layer (electronics) , geology , chemistry , environmental chemistry , meteorology , physics , biology , botany , statistics , mathematics , organic chemistry , astronomy , environmental engineering
Evidence is provided for seasonality in the bomb 14 C content of surface ocean water in temperate and polar regions. The GEOSECS results show that the surface waters in the north temperate Atlantic had 14 C/ 12 C ratio 35‰ higher just before late fall deepening of the mixed layer than just before the reestablishment of the summer mixed layer six months later. This is the difference expected from the summer exchange of CO 2 between the atmosphere and the surface mixed layer.