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Reconstruction of the history of anthropogenic CO2 concentrations in the ocean
The results indicate that ocean uptake of anthropogenic CO2 has increased sharply since the 1950s, with a small decline in the rate of increase in the last few decades, and suggest that the terrestrial biosphere was a source of CO2 until the 1940s, subsequently turning into a sink.
Strong latitudinal patterns in the elemental ratios of marine plankton and organic matter
Nearly 75 years ago, Alfred C. Redfield observed a similarity between the elemental composition of marine plankton in the surface ocean and dissolved nutrients in the ocean interior 1 . This…
The impact of remineralization depth on the air–sea carbon balance
The depth at which particulate organic carbon sinking from the surface ocean is converted back to carbon dioxide is known as the remineralization depth. A three-dimensional global ocean…
Taxonomic resolution, ecotypes and the biogeography of Prochlorococcus.
- A. Martiny, A. P. Tai, D. Veneziano, F. Primeau, S. Chisholm
- Environmental ScienceEnvironmental microbiology
- 1 April 2009
It is suggested that the spatial distribution of Prochlorococcus ecotypes is shaped by a hierarchy of environmental factors as well dispersal limitation, as well as some variation in community structure for some definitions of taxa.
Characterizing Transport between the Surface Mixed Layer and the Ocean Interior with a Forward and Adjoint Global Ocean Transport Model
- F. Primeau
- Environmental Science
- 1 April 2005
The theory of first-passage time distribution functions and its extension to last-passage time distribution functions are applied to the problem of tracking the movement of water masses to and from…
Reduced ventilation and enhanced magnitude of the deep Pacific carbon pool during the last glacial period
Recent increase in oceanic carbon uptake driven by weaker upper-ocean overturning
This work uses a global inverse model to quantify the mean ocean circulation during the 1980s, 1990s and 2000s, and estimates the impact of decadal circulation changes on the oceanic CO2 sink using a carbon cycling model, and finds that during the 1990s an enhanced upper-ocean overturning circulation drove increased outgassing of natural CO2, thus weakening the globalCO2 sink.
Carbon isotope evidence for the latitudinal distribution and wind speed dependence of the air–sea gas transfer velocity
The air–sea gas transfer velocity is an important determinant of the exchange of gases, including CO2, between the atmosphere and ocean, but the magnitude of the transfer velocity and what factors…
The effect of translation speed upon the intensity of tropical cyclones over the tropical ocean
During the past several decades operational forecasts of tropical cyclone (TC) tracks have improved steadily, but intensity forecast skills have experienced rather modest improvements. Here we use 40…
Global rates of water-column denitrification derived from nitrogen gas measurements
Biologically available nitrogen limits phytoplankton growth over much of the ocean. Data-constrained model simulations suggest that bioavailable nitrogen losses match gains in the global ocean,…