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Climate News

  • Apr 9 - Atlantic Circulation Weaker Than In Last Thousand Years
    Cold water from the faster-then-expected melting of the Greenland ice sheet appears to be slowing the ocean circulation to levels not experienced in more than 1,000 years. New research, published in Nature Climate Change, used observations and studies of sea-surface temperatures to produce a new index charting the waning force of the Atlantic meridional overturning circulation (AMOC). If the climate relationships identified by the researchers, led by the Potsdam Institute for Climate Impact Research in Germany, hold true, growing melt rates in Greenland “might lead to further weakening of the AMOC within a decade or two, and possibly even more permanent shutdown” of key components of it". The northern hemisphere could become cooler and hurricanes, nor'easters and other storms could become more common, providing the heat with an alternative pathway along which it can travel.
  • Mar 31 - Projections based on past ocean resilience
    Global climate change may result in abrupt disrupting ecosystem-level effects that will have millennial-scale recovery periods. Based on a recent study of sediment cores from the Pacific ocean seafloor, scientists led by Sarah Moffitt, Ph D, from the UC Davis Bodega Marine Laboratory and Coastal and Marine Sciences Institute, tell us they expect to see much larger areas of low-oxygen "dead zones" in the world's oceans. "Folks in Oregon and along the Gulf of Mexico are all-too-familiar with the devastating impacts of low-oxygen ocean conditions on local ecosystems and economies," says Peter Roopnarine, Ph D, of the California Academy of Sciences. "We must explore how ocean floor communities respond to upheaval as we adapt to a 'new normal' of rapid climate change. We humans have to think carefully about the planet we are leaving for future generations."

    source: Sarah E. Moffitt, Tessa M. Hill, Peter D. Roopnarine, and James P. Kennett. Response of seafloor ecosystems to abrupt global climate change. PNAS, 2015 DOI: 10.1073/pnas.1417130112
  • Mar 16 - First ever observation of an increase in carbon dioxide's greenhouse effect
  • Mar 3 - February 2015’s average carbon dioxide level above 400ppm
  • Mar 3 - Termites enhance African Ecosystem Resilience

Climate Change Datasets

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General Circulation Models (GCMs)

General circulation models (GCMs or global climate models) have been designed to simulate the planet's future climate.  In the past 30 years climate modelers have been improving the GCMs' spatial resolution from the first assessment report (FAR-1995) to the fourth report (AR4-2007) for the IPCC (Intergovernmental Panel for Climate Change) to meet the ...

The MAPSS Model

MAPSS (Mapped Atmosphere-Plant-Soil System) is a static biogeography model that projects potential vegetation distribution and hydrological flows on a grid. It simulates type of vegetation and density for all upland vegetation from deserts to wet forests. It uses long term, average ...

MC1 Dynamic Global Vegetation Model
[ MC1 ](http://sequoia.fsl.orst.edu/dgvm/index.html) is a widely used dynamic global vegetation model (DGVM) that has been used to simulate potential vegetation shifts in California and Alaska, all of North America, and over the entire globe under various climate change scenarios. However, past simulations were run at a scale that is too coarse (e.g., 10km x 10km for the
Seasonal Fire Forecasting

One notable aspect of the MC1 Dynamic General Vegetation Model (DGVM) is the process-based fire module which simulates fire events and their impact on vegetation through time at regional to global scales. The module was built to explore the response of fire and its impacts to century-long ...

Sea Level Rise

The Pacific Northwest coast includes a wide diversity of coastal habitats from including bluffs, sandy beaches, coastal marshes, tidal flats and eelgrass beds, supporting myriad species of fish and wildlife as well as local economies and cultural history. These coastal habitat are threatened by various human activities due to continued population ...