DATA AND FILES:
This page provides links to data files. These are provided for convenience of downloading related to specific projects or particular data requests, and are not fully explained here.
Library of Downscaled Climate Projections
A data set of 112 downscaled climate projections, based on output from 16 GCMs and 3 different SRES emissions scenarios (A2, A1B, B1) has been made available for public downloading. The spatial domain is shown in the figure, covering the conterminous US plus portions of Canada and Mexico. The resolution is 1/8 degree (~140 km2 per grid cell). Raw monthly data for any region as well as summary statistics may be specified. The data set is formally introduced in AGU's Eos 88(47), 11/2007. Click here to be redirected to the web site, hosted by the Green Data Oasis. Streamflow was also derived as part of the USBR WaterSmart project, and is available here, with documentation here.
Global Downscaled Data
Preliminary data are served here. These will be moved to a new location eventually, with a fancy new interface to allow subsetting and some analysis. The collection of downscaled simulations will be expanded as well.
Both the global and US-wide datasets are included in the Climate Wizard: http://www.climatewizard.org.
Derived daily extreme statistics for CMIP3 projections are available here: http://climateknowledgeportal.climatewizard.org/, produced as part of an effort by the World Bank, described here: http://sdwebx.worldbank.org/climateportal. A document describing these data is here.
Note: it was identified that there is a spatial shift in the wind field in both the original 1949-1999 and in the updated 1/8-degree US-wide data served here. The interpolation placed the 10m winds approximately 1.5 degrees to the North and West. As these data sets are being updated at a finer resolution, no correction to these data sets are anticipated.
The link below brings you to directories of files of monthly or daily gridded observations at 1/8 degree spatial resolution (about 12 km). These are available in individual files for each year from 1950-1999. These are described in detail in the reference:
That should be referenced anytime this data set is used. The original
binary format data for 1949-2000 are at the University
of Washington site. The link below is to a set of 1950-1999 files
reformatted into the common netCDF format, to be more compatible with
climate model and other meteorological data formats, as well as the
handy NCO Utilities
software. Files are named in the format:
The newer 1/16 degree daily gridded data beginning in 1915 (see the Livneh et al., 2013 reference on the "Publications" page for documentation) are available here.
CA Governor's Project: 2005-06
I have completed the climate data downscaling for the selected GCMs, and generated daily and monthly climate data and hydrologic variables (soil moisture, snowpack, streamflow). Due to excessive data volume, these files are not available through this server, but may be obtained as described on a web page of the California Climate Change Center.
"PNAS" and other downscaled GCM data: Data from HadCM3 and PCM for SRES scenarios A1fi and B1, as used in the 2004 Hayhoe et al. PNAS paper. Other data is from the IPCC AR4 simulations.
Files (netcdf format, compressed with gzip) contain 10 years of monthly precipitation and air temperature data downscaled to a 1/8 degree spatial resolution. Files are named us_<model>.<scenario>.<timestep>.<variable>.<years>.nc.gz
Summary Plots of Differences between 1961-1990 and 2070-2099 averages (DJF (winter) = December-February; JJA (summer) = June-August):
Elevations (in meters) for each grid cell are included in the file here, in the Arc/INFO gridascii format.