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Estimating of gas transfer velocity using triple isotopes of dissolved oxygen.

DRS at CSIR-National Institute of Oceanography

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Title Estimating of gas transfer velocity using triple isotopes of dissolved oxygen.
 
Creator Sarma, V.V.S.S.
Abe, O.
Honda, M.
Saino, T.
 
Subject gas exchange
air-water exchanges
carbon cycle
isotopes
 
Description The atmosphere-ocean exchange of climatically important gases is determined by the transfer velocity (k) and concentration gradient across the interface. Based on observations in the northwestern subarctic Pacific and Sagami Bay, we report here the results of the first ever application of the natural abundance of triple isotopes of dissolved oxygen (sup(16)O, sup(17)O and sup(18)O) for direct estimation of k and propose a new relationship with wind speed. The k values estimated from nighttime variations in oxygen isotopes are found to be higher than the direct estimations at low wind speed (13 m s sup(-1)) and showed significant spatial variability. The method presented here can be used to derive seasonal and spatial variations in k and the influence of surface conditions on the value, leading to improved estimates of biogenic/anthropogenic gas exchange at the air-sea interface.
 
Date 2017-09-27T13:04:32Z
2017-09-27T13:04:32Z
2010
 
Type Journal Article
 
Identifier Journal of Oceanography, vol.66; 2010; 505-512.
http://drs.nio.org/drs/handle/2264/5145
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2010] Springer.
 
Publisher Springer