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Climate News

  • May 11 - THRESHOLDS passed ...
    Carbon dioxide concentration has now passed the 400ppm threshold. That concentration has not been this high for at least three million year. "Experts say the United States is more responsible than any other nation for the high level". Carbon dioxide above 400 parts per million was first seen in the Arctic last year, and had also spiked above that level in hourly readings at Mauna Loa.
    But the average reading for an entire day surpassed that level at Mauna Loa for the first time in the 24 hours that ended at 8 p.m. Eastern Daylight Time Thursday May 9th, 2013.
    Furthermore, in a brand new report from the Arctic Monitoring and Assessment Programme, acidity levels in the Arctic ocean have been reported to be about 30% higher now than before the Industrial Revolution.

    "If you’re looking to stave off climate perturbations that I don’t believe our culture is ready to adapt to, then significant reductions in CO2 emissions have to occur right away,” said Mark Pagani, a Yale geochemist who studies climates of the past. “I feel like the time to do something was yesterday.”
  • May 6 - Great Lakes going dry
    National Oceanic and Atmospheric Administration (NOAA) reported that in January lakes Huron and Michigan reached their lowest point since monitoring began in 1860. The low volume record started in 1998, a dry year with unusually warm water, extensive evaporation, and little precipitation and runoff flowing into the lakes. From 1998 through 2000, lake water levels dropped by about a meter, says NOAA hydrologist Andrew Gronewold, based in Ann Arbor, Michigan. Fish are cut off from the wetlands and rivers they need for reproduction, and giant commercial ships struggle to get through the channels that connect the lakes. NOAA and the U.S. Army Corps of Engineers predict lake levels will rise this summer, but not by muchThis news come from the section "News of the Week" - Science issue 26 April. 2013


  • May 5 - Global temperature above 20th century average ... again
  • Apr 29 - 2013 Drought Outlook
  • Apr 24 - State by state temperature trends in the USA since the 1st earth day

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 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 ...

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 ...

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