Satellite ocean color assessment of air-sea fluxes of CO2 in a river-dominated coastal margin
Article first published online: 5 JAN 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 1, January 2006
How to Cite
2006), Satellite ocean color assessment of air-sea fluxes of CO2 in a river-dominated coastal margin, Geophys. Res. Lett., 33, L01601, doi:10.1029/2005GL023942., and (
- Issue published online: 5 JAN 2006
- Article first published online: 5 JAN 2006
- Manuscript Accepted: 28 NOV 2005
- Manuscript Revised: 20 NOV 2005
- Manuscript Received: 29 JUN 2005
 Quantification of the contributions of river-influenced margins to regional CO2 fluxes is difficult due to the high degree of spatial and temporal variability in these regions. We describe an algorithm for assessment of surface water partial pressure of CO2 (pCO2) from MODIS imagery in the northern Gulf of Mexico. Principal component analysis and multiple regression were used to relate surface pCO2 to environmental variables (T, S, chlorophyll). Subsequent retrieval of corresponding products from MODIS-Aqua L1B data permitted the assessment of regional distributions of pCO2. An area of low pCO2 was evident in the vicinity of the Mississippi River delta, consistent with field observations. Regional surface air to sea fluxes of CO2 were estimated as 2.0–4.2 mmol C m−2 d−1.