This dataset depicts the Difference for Winter Precipitation
for 2015-2030 and 2045-2060 compared to 1968-1999 for ECHAM5.
These data have been generated using a regional climate model called
RegCM3 using boundary conditions from observations or general
circulation models for historical conditions, and from GCM projections
for future conditions.
Regional climate model
description: RegCM3 is the third generation of the Regional Climate
Model originally developed at the National Center for Atmospheric
Research during the late 1980s and early 1990s. Details on current model
components and applications of the model can be found in numerous
publications (e.g., Giorgi et al, 2004a,b, Pal et al, 2007), the ICTP
RegCNET web site (http://users.ictp.it/RegCNET/model.html), and the ICTP
RegCM publications web site
(http://users.ictp.it/~pubregcm/RegCM3/pubs.htm ). The Western North
America domain has a horizontal grid spacing of 15 km and 18 vertical
levels.
RegCM3 requires time-dependent lateral (wind,
temperature, and humidity) and surface [surface pressure and sea surface
temperature (SST)] boundary conditions that are updated every 6 hours
of simulation. Lateral boundary conditions are derived from General
Circulation Model (GCM) output or observations (e.g. NCEP).
Additional
information:
http://regclim.coas.oregonstate.edu/RCCV/RCCV_States_advanced.html for
data visualization and http://regclim.coas.oregonstate.edu/ for detailed
documentation.
These files were created by calculating
differences (anomalies) from the mean 1968-99 climate according to the
given model, and then adding those anomalies to the mean PRISM climate
for 1968-1999
Global climate simulations from the MPI ECHAM5 were
part of a suite of model output used in the Climate Model
Inter-comparison Project (CMIP) and the IPCC AR4. Details and
documentation of the model can be found following links on the CMIP
website located at: http://www
pcmdi.llnl.gov/ipcc/model_documentation/ipcc_model_documentation.php.