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Estimation of air-sea CO2 flux in the coastal waters of Visakhapatnam

DRS at CSIR-National Institute of Oceanography

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Title Estimation of air-sea CO2 flux in the coastal waters of Visakhapatnam
 
Creator Latha, T.P.
Rao, K.H.
Sarma, V.V.S.S.
Seetaram, P.
Choudhury, S.B.
Nagamani, P.V.
Dutt, B.S.
Dhadwal, V.K.
Manna, S.
 
Subject CHEMISTRY AND BIOGEOCHEMISTRY
OCEANOGRAPHY AND LIMNOLOGY
CHEMISTRY AND BIOGEOCHEMISTRY
CHEMISTRY AND BIOGEOCHEMISTRY
CHEMISTRY AND BIOGEOCHEMISTRY
 
Description Observations were conducted in a time series mode off Visakhapatnam in Bay of Bengal, for a period of 10 days from 8 to 19th February 2013 to examine the short-term atmospheric events on chemical processes in the upper 100 m water column. Water column temperature, salinity at 2 h interval from surface to 100 m were collected using CTD whereas water samples were collected for nutrients (phosphate and silicate), dissolved inorganic carbon (DIC), pH, total alkalinity (TA) at 4 h interval in the upper 25 m water column. Atmospheric properties such as air temperature, humidity, and wind speed were measured in 1 min interval. The winds were normally northeast direction with speed ranged between 0.1 and 8 m/s from 8 to 13th February and decreased to 0.1–4 m/s between 14 and 19th February 2013. The atmospheric pCO2 ranged from 380 to 420 μatm whereas surface water pCO2 ranges from ~370 to 470 μatm during study period. The low pCO2 levels were associated with low saline water indicating the rich nutrient coastal waters were under saturated with reference to atmosphere. The CO2 flux estimations for this region showed a significant source to the atmospheric CO2. This study provides information on changes in the physical and chemical processes in relation to the CO2 flux at the air-water interface in the coastal Bay of Bengal
 
Date 2015-10-27T09:47:19Z
2015-10-27T09:47:19Z
2015
 
Type Journal Article
 
Identifier Journal of the Indian Society of Remote Sensing, vol.43(3); 2015; 647-652
http://drs.nio.org/drs/handle/2264/4824
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Indian Society of Remote Sensing
 
Publisher Springer