Description of data: These meteorological data represent approximately 30,000 stations across CONUS (NCDC), southern Canada (Environment Canada), and Mexico (SMN/Congua) gridded to 333579 points at a 1/16 degree spatial resolution, running from 1 Jan 1950 - 31 Dec 2013 and with the following fields: ASCII format columns: One file per grid point, with naming convention: data__ netCDF format: One file per month, with naming convention: livneh_NAmerExt_15Oct2014..nc Compression: These data are available in both netCDF and ASCII formats, which were compressed with the bzip2 utility. To uncompress simply type: % bunzip2 Daily VIC-derived outputs: These fields were produced with the VIC model v.4.1.2.c using the above meteorological data and are at a daily output step. Descriptions of these fields from VIC global file: OUTFILE VIC_fluxes_Livneh_CONUSExt_v.1.2_2013 12 OUTVAR OUT_EVAP (mm) Total ET rate-- includes Canopy, Sub-canopy Evaporation, Transpiration, and Snow Sublimation OUTVAR OUT_RUNOFF (mm) Surface Runoff OUTVAR OUT_BASEFLOW (mm) Baseflow OUTVAR OUT_SOIL_MOIST (mm) Three layer values of Soil Moisture, i.e. three columns starting with upper layer OUTVAR OUT_SWE (mm) Snow Water Equivalent OUTVAR OUT_WDEW (mm) Canopy Water OUTVAR OUT_SENSIBLE (W/m^2) Net Upward Sensible Heat Flux OUTVAR OUT_LATENT (W/m^2) Net Upward Sensible Heat Flux OUTVAR OUT_GRND_FLUX (W/m^2) Net Heat Flux into Ground OUTVAR OUT_R_NET (W/m^2) Net Downward Radiation Flux OUTVAR OUT_PET_TALL (mm) Potential Evapotranspiration from tall reference crop (Alfalfa) OUTVAR OUT_PET_SHORT (mm) Potential Evapotranspiration from short reference crop (Grass) OUTVAR OUT_PET_NATVEG (mm) Potential Evapotranspiration from current vegetation and current canopy resistance VIC-simulated SWE output was observed to 'glaciate' which is a long-standing issue in the snow model in which inter-year snowpacks accumulate to result in large (and in many cases) unrealistic accumulation totals. A decision was made for the Livneh et al. (2013) data set to identify these grid cell on the basis of multi-year accumulation of >=200 mm of SWE over the period 1915-2011 and rese SWE to 0.0 at the start of each water year, regardless of the severity of the glaciation, which varies considerably across cells and regions. For the current data set (Livneh et al, 2015--citation below) this practice was continued for grid cells outside the Livneh et al. (2013) domain, using a slightly different protocol, given the shorter temporal window, where grid cells that never reached SWE=0.0 during 1950-2013 or had SWE > 6000 mm were flagged. A list of affected grid cells is included in the file: glaciated.cells.L13.L15.txt How to cite the data: A manuscript has been published describing the new data set, including station sources and comparisons to other gridded products: Livneh B., T.J. Bohn, D.S. Pierce, F. Munoz-Ariola, B. Nijssen, D. Cayan, R. Vose, and L.D. Brekki, 2015: Development of a spatially comprehensive, daily hydrometeorological data set for Mexico, the conterminous U.S., and southern Canada: 1950-2013, Nature Scientific Data, 2, 150042, doi:10.1038/sdata.2015.42 Methods and additional validation was conducted in the Livneh et al. (2013) manuscript and we recommend citing this paper in addition to the above, if a description of gridding methods and validation are desired: Livneh, B., E. A. Rosenberg, C. Lin, B. Nijssen, V. Mishra, K. M. Andreadis, E. P. Maurer, and D. P. Lettenmaier, 2013: A Long-Term Hydrologically Based Dataset of Land Surface Fluxes and States for the Conterminous United States: Update and Extensions. J. Climate, 26, 9384~9392. Gridding Code: The gridding codes are available in a directory called "gridding.codes.livneh.2015/" containing a set of C++ codes, with a Makefile and a detailed readme type file called "forcings_guide_June2015.BL.doc".