Ocean primary production and climate: Global decadal changes

  title={Ocean primary production and climate: Global decadal changes},
  author={Watson W. Gregg and Margarita E. Conkright and Paul A. Ginoux and John E. O’Reilly and Nancy W. Casey},
  journal={Geophysical Research Letters},
Satellite‐in situ blended ocean chlorophyll records indicate that global ocean annual primary production has declined more than 6% since the early 1980's. Nearly 70% of the global decadal decline occurred in the high latitudes. In the northern high latitudes, these reductions in primary production corresponded with increases in sea surface temperature and decreases in atmospheric iron deposition to the oceans. In the Antarctic, the reductions were accompanied by increased wind stress. Three of… 
Decline of the marine ecosystem caused by a reduction in the Atlantic overturning circulation
In the simulations, a disruption of the Atlantic meridional overturning circulation leads to a collapse of the North Atlantic plankton stocks to less than half of their initial biomass, owing to rapid shoaling of winter mixed layers and their associated separation from the deep ocean nutrient reservoir.
Phytoplankton decline in the eastern North Pacific transition zone associated with atmospheric blocking
It is shown that high-latitude atmospheric blocking events over Alaska are the primary drivers of the recent decline of Chla in the eastern North Pacific transition zone and a mechanism of the top-down teleconnection between the high latitude atmospheric circulation anomalies and the subtropical oceanic primary productivity is proposed.
North‐South asymmetry in the modeled phytoplankton community response to climate change over the 21st century
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North-South asymmetry in the modeled phytoplankton community response to climate change over the 21 st century
[1] Here we analyze the impact of projected climate change on plankton ecology in all major ocean biomes over the 21st century, using a multidecade (1880–2090) experiment conducted with the Community
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[1] We present projections of future primary production for the Canadian Beaufort Shelf of the Arctic Ocean, using simulations of future climate change from the Canadian Global Climate Model (CGCM2)
Detection of anthropogenic climate change in satellite records of ocean chlorophyll and productivity
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Marine phytoplankton biomass and community structure are expected to change under global warming, with potentially significant impacts on ocean carbon, nutrient cycling, and marine food webs.
Long-term trends in ocean plankton production and particle export between 1960–2006
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The global ocean chlorophyll archive produced by the CZCS was revised using compatible algorithms with SeaWiFS. Both archives were then blended with in situ data to reduce residual errors. This
Biospheric Primary Production During an ENSO Transition
Increases in ocean NPP were pronounced in tropical regions where El Niño–Southern Oscillation impacts on upwelling and nutrient availability were greatest, and Globally, land NPP did not exhibit a clear ENSO response, although regional changes were substantial.
Biogeochemical Controls and Feedbacks on Ocean Primary Production
Elucidating the biogeochemical controls and feedbacks on primary production is essential to understanding how oceanic biota responded to and affected natural climatic variability in the geological past, and will respond to anthropogenically influenced changes in coming decades.
Simulated response of the ocean carbon cycle to anthropogenic climate warming
A 1995 report of the Intergovernmental Panel on Climate Change provides a set of illustrative anthropogenic CO2 emission models leading to stabilization of atmospheric CO2 concentrations ranging from
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The historical archives of in situ (National Oceanographic Data Center) and satellite (Coastal Zone Color Scanner (CZCS)) chlorophyll data were combined using the blended analysis method of Reynolds
Atmospheric pCO2 sensitivity to the biological pump in the ocean
In models of the global carbon cycle, the pCO2of the atmosphere is more sensitive to the chemistry of the high‐latitude surface ocean than the tropical ocean. Because sea‐surface nutrient
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Results suggest that primary productivity is iron limited not only throughout the equatorial Pacific but also over much of the vast South Pacific gyre.
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