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[1] In this paper we use a biological-physical model with an explicit representation of Trichodesmium to examine the influence of N 2 fixation in the Atlantic. Three solutions are examined, one where the N 2 fixation rate has been set to observed levels, one where the rate has been increased to levels comparable to geochemical estimates, and one with no N 2(More)
In this paper we examine time-series measurements of near-surface chlorophyll concentration from a mooring that was deployed at 80.5 • E on the equator in the Indian Ocean in 2010. These data reveal at least six striking spikes in chlorophyll from October through December, at approximately 2-week intervals, that coincide with the development of the fall(More)
a r t i c l e i n f o The fresh Amazon/Orinoco plume covers in excess of 10 6 km 2 in late summer–early fall forming a near-surface barrier layer that reduces exchange with the cooler, saltier water below. Barrier layers and higher water turbidity keep SST in the region high and thus are factors in the development of fall season hurricanes. Year to year(More)
1 As part of the multidisciplinary ANACONDAS program, we characterized the distributions of 2 nutrients, particulate organic matter, phytoplankton, and stable carbon and nitrogen isotopes in 3 the Amazon plume region during the spring high-flow period of May-June 2010. We 4 encountered the lowest salinities (16.6 psu) near the southern end of our study(More)
The Amazon River has the largest discharge of all rivers on Earth, and its complex plume system fuels a wide array of biogeochemical processes, across a large area of the western tropical North Atlantic. The plume thus stimulates microbial processes affecting carbon sequestration and nutrient cycles at a global scale. Chromosomal gene expression patterns of(More)
Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract The overarching goal of this study is to simulate subsurface N* (sensu, Gruber and Sarmiento, 1997) anomaly patterns in the North Atlantic Ocean and determine the basin wide rates(More)
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