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High CO2 emissions from the tropical Godavari estuary (India) associated with monsoon river discharges

DRS at CSIR-National Institute of Oceanography

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Title High CO2 emissions from the tropical Godavari estuary (India) associated with monsoon river discharges
 
Creator Sarma, V.V.S.S.
Kumar, N.A.
Prasad, V.R.
Venkataramana, V.
Appalanaidu, S.
Sridevi, B.
Kumar, B.S.K.
Bharati, M.D.
Subbaiah, C.V.
Acharyya, T.
Rao, G.D.
Viswanadham, R.
Gawade, L.
Manjary, D.T.
Kumar, P.P.
Rajeev, K.
Reddy, N.P.C.
Sarma, V.V.
Kumar, M.D.
Sadhuram, Y.
Murty, T.V.R.
 
Subject river discharges
Godavari estuary
Indian Ocean
continental shelves
 
Description Estuaries have been under sampled to establish them as sources or sinks of the atmospheric carbon dioxide. Such poor coverage is well known for tropical, particularly monsoon driven, estuaries. In an attempt to study the variability in CO sub(2) in a tropical monsoon estuary we made systematic time-series observations in the Gautami Godavari estuarine system in the east coast of India. Our 18 month-long extensive monitoring in the tropical Godavari estuarine system revealed pH >7.8 during dry period that decreased by 1.5 plus or minus 0.01 during peak discharge period. The decrease in pH was associated with high nutrients and bacterial activities suggesting significant organic carbon decomposition. High bacterial respiration (20.6 plus or minus 7.2 mu MCl sup(-1) d sup(-1)) in the estuary resulted in very high pCO sub(2) of approx. 30,000 mu atm during peak discharge period, which otherwise were
 
Date 2011-05-11T05:10:58Z
2011-05-11T05:10:58Z
2011
 
Type Journal Article
 
Identifier Geophysical Research Letters, vol.38(8); 2011; 4 pp; doi:10.1029/2011GL046928
http://drs.nio.org/drs/handle/2264/3848
 
Language en
 
Rights An edited version of this paper was published by AGU. Copyright [2011] AGU. To view the published open abstract, go to http://dx.doi.org/10.1029/2011GL046928
 
Publisher American Geophysical Union