![]() Humidity forcings as well as those listed above, the current VIC You need sub-daily interpolation of temperature, or radiative and Temperature, and average 10-meter wind speed in ascii format. Each daily data file contains columns of year, month, day, daily total precipitation, maximum temperature, minimum The individual data files, (which can be extractedĬenter of the grid cell in the file name:ĭata_. Maximum and minimum temperature (C), and 10-m wind speed (m/s) for eachġ/8-degree grid cell, grouped (using the UNIX tar command) by Links below are to files containing daily precipitation (mm/day), For this updated dataset, if a meteorological station has a time of observation before noon, the precipitation is assigned to the prior day, otherwise no adjustment is made. Climate 15,Ĭontacts: Ed Maurer at Santa Clara University, Andy Wood at CBRFCĭata Description: The updated data were processed exactly as in the reference above with the single exception of the precipitation time-of-observation adjustment. Long-Term Hydrologically-Based Data Set of Land Surfaceįluxes and States for the Conterminous United States, J. If you acquire data from this web site, we request that you pleaseĪcknowledge this by citing the primary reference for this, Maurer et al. © 2016 by the Ecological Society of America.1/8-degree gridded meteorological data. More broadly, our results highlight the need for careful consideration among different available data sets in terms of which variables they describe best, where they perform best, and their resolution, when selecting a downscaled weather data set for a given ecological application.Ĭlimate data set ecoregions extremes gridded resolution weather. Although some inherent differences among data sets and weather station data are to be expected, our findings highlight how much different interpolation methods affect downscaled weather data, even for local comparisons with nearby weather stations located inside a grid cell. Surprisingly, the accuracy of the data sets does not depend on spatial resolution. The data set exhibiting the best agreement with station data varies among ecoregions. Temperature is represented more accurately than precipitation, and climate averages are more accurate than weather extremes. We found considerable differences among data sets and between downscaled and weather station data. Here we address this shortcoming by focusing on four major questions: (1) How accurate are downscaled, gridded climate data sets in terms of temperature and precipitation estimates? (2) Are there significant regional differences in accuracy among data sets? (3) How accurate are their mean values compared with extremes? (4) Does their accuracy depend on spatial resolution? We compared eight widely used downscaled data sets that provide gridded daily weather data for recent decades across the United States. Numerous downscaled weather data sets exist, but little attempt has been made to evaluate them systematically. Weather and climate affect many ecological processes, making spatially continuous yet fine-resolution weather data desirable for ecological research and predictions.
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