Mathematics – Logic
Scientific paper
Jan 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3301607m&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 1, CiteID L01607
Mathematics
Logic
Oceanography: General: Diurnal, Seasonal, And Annual Cycles (0438), Oceanography: Biological And Chemical: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 1615, 4912), Oceanography: Biological And Chemical: Gases
Scientific paper
A diurnal `thermal pumping' mechanism is proposed to explain why undersaturation of inert gases may develop at the sea surface during extended periods of low wind speed and net warming. A simple two-layer model of the upper ocean with parameterized air-sea gas exchange is used to explain the process. The model predicts maximum undersaturations of 0.25% for Ne, 0.75% for N2, 0.88% for Ar, and 1.12% for Kr for an assumed diurnal warming signal of 2°C, a gas transfer rate appropriate to a wind speed of 4 ms-1, and the simplifying assumption of no net warming over the day. The model results depend on the air-sea gas transfer rate and the details of the upper ocean heating and mixing cycle. Observations of N2 undersaturation from the tropical Atlantic provide supporting experimental evidence.
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