A Comparison of CO2 Dynamics and Air-Water Fluxes in a River-Dominated
PUBLICATIONS Geophysical Research Letters RESEARCH LETTER A comparison of CO2 dynamics and air-water fluxes in a 10.1002/2016GL070716 river-dominated estuary and a mangrove-dominated Key Points: marine estuary • River-dominated Hugli Estuary emits 1,2 1 1 1 1 3 14 times more CO2 than the Anirban Akhand , Abhra Chanda , Sudip Manna , Sourav Das , Sugata Hazra , Rajdeep Roy , marine-dominated Matla Estuary S. B. Choudhury3, K. H. Rao3, V. K. Dadhwal3, Kunal Chakraborty4, K. M. G. Mostofa5, T. Tokoro2, • In the last 14 years the CO2 efflux rate 2 6 from the Hugli Estuary has increased Tomohiro Kuwae , and Rik Wanninkhof more than twofold 1 2 • The fCO2 (water) value of the Matla, a School of Oceanographic Studies, Jadavpur University, Kolkata, India, Coastal and Estuarine Environment Research Group, mangrove estuary, is at the lower end Port and Airport Research Institute, Yokosuka, Japan, 3National Remote Sensing Centre, Department of Space, Government of the reported data from other of India, Hyderabad, India, 4Indian National Centre for Ocean Information Services, Hyderabad, India, 5Institute of Surface- mangrove ecosystems of the world Earth System Science, Tianjin University, Tianjin, China, 6Atlantic Oceanographic and Meteorological Laboratory, NOAA, Miami, Florida, USA Supporting Information: • Supporting Information S1 • Figure S1 Abstract The fugacity of CO2 (fCO2 (water)) and air-water CO2 flux were compared between a • Data Set S1 river-dominated anthropogenically disturbed open estuary, the Hugli, and a comparatively pristine Correspondence to: mangrove-dominated semiclosed marine estuary, the Matla, on the east coast of India. Annual mean salinity A. Akhand, of the Hugli Estuary (≈7.1) was much less compared to the Matla Estuary (≈20.0).
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