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Seasonal distributions of aeolian iron fluxes to the global ocean
Author(s) -
Gao Y.,
Kaufman Y. J.,
Tanré D.,
Kolber D.,
Falkowski P. G.
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl011926
Subject(s) - aeolian processes , northern hemisphere , oceanography , phytoplankton , environmental science , southern hemisphere , iron fertilization , latitude , atmospheric sciences , climatology , flux (metallurgy) , geology , nutrient , ecology , biology , geodesy , geomorphology , materials science , metallurgy
Among the factors affecting the photosynthetic rate of marine phytoplankton, aeolian iron (Fe) fluxes appear to be critical in several large regions of the global ocean. Here we present an analysis of in situ aerosol iron data obtained from a wide variety of marine locations to quantify the seasonal Fe inputs to the global ocean. When extrapolated to the global ocean, our results indicate strong seasonal variations in aeolian Fe fluxes in different oceanic basins. The predominant fraction of the Fe inputs enters the oceans in the Northern Hemisphere, with the summer flux rates ca. twice those of winter. The high Fe fluxes in the Northern Hemisphere are concentrated in low and mid‐latitudes. With the promising new data from MODIS aboard the Terra satellite, the linkage between Fe fluxes and phytoplankton biomass and productivity may be soon further quantified.