BIOGEOCHEMICAL AND PHYSICAL CONTROLS OF ATMOSPHERE-OCEAN OZONE FLUXES DURING FIVE RESEARCH CRUISES

摘要

A recently developed ship-based eddy covariance ozone flux system was deployed for investigating biogeochemical and physical controls of ozone surface fluxes over the open ocean. The relationship between ozone fluxes and chlorophyll were studied during the GOMECC 2007 cruise when large gradients in chlorophyll concentrations were observed along the cruise track in both the Gulf of Mexico and Northern Atlantic. The motivation for this study can be broken into two sections: a) evaluate the agreement between insitu and satellite derived chlorophyll concentrations and b) establish if either method can represent the chlorophyll concentration at the surface where the reaction with ozone occurs. The two observation methods show good agreement in chlorophyll features but differ in the magnitude of observed concentrations The agreement between the two data sets and the postulated dependency of the oceanic ozone flux on chlorophyll levels opens up new opportunities for utilizing satellite-derived oceanic chlorophyll fields for description of the large scale oceanic ozone uptake.