Mathematics – Logic
Scientific paper
Jul 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.1763k&link_type=abstract
Geophysical Research Letters, Volume 24, Issue 14, p. 1763-1766
Mathematics
Logic
15
Oceanography: General: Physical And Chemical Properties Of Seawater, Oceanography: Biological And Chemical: Carbon Cycling, Oceanography: Biological And Chemical: Gases, Information Related To Geographic Region: Indian Ocean
Scientific paper
The partial pressure of CO2 (pCO2) was measured during the 1995 South-West Monsoon in the Arabian Sea. The Arabian Sea was characterized throughout by a moderate supersaturation of 12-30 μatm. The stable atmospheric pCO2 level was around 345 μatm. An extreme supersaturation was found in areas of coastal upwelling off the Omani coast with pCO2 peak values in surface waters of 750 μatm. Such two-fold saturation (218%) is rarely found elsewhere in open ocean environments. We also encountered cold upwelled water 300 nm off the Omani coast in the region of Ekman pumping, which was also characterized by a strongly elevated seawater pCO2 of up to 525 μatm. Due to the strong monsoonal wind forcing the Arabian Sea as a whole and the areas of upwelling in particular represent a significant source of atmospheric CO2 with flux densities from around 2mmolm-2d-1 in the open ocean to 119mmolm-2d-1 in coastal upwelling. Local air masses passing the area of coastal upwelling showed increasing CO2 concentrations, which are consistent with such strong emissions.
Duinker Jan C.
Körtzinger Arne
Mintrop Ludger
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