Gridded Mean Monthly Temperature and Precipitation Data for Alaska, British Columbia, and Yukon

To aid in better understanding the temperature and precipitation data of the spatially variable climate of Alaska and Northwest Canada, this dataset was created via statistical downscaling methods so that hydrologists and other users would have access to gridded estimates (two km resolution) of cumulative precipitation and mean temperature for every month between 1961 and 2009 in Alaska, Yukon Territory, and British Columbia.
Cite this dataset when used as a source.
  • NCEI DSI 9817_01
  • gov.noaa.ncdc:C00780
Download Data
  • Download data via FTP (download)
    NCEI FTP site for Gridded Mean Monthly Temperature and Precipitation Data for Alaska, British Columbia, and Yukon Territory
Distribution Formats
  • TAR containing ASCII GRID
    • File Specification: http://en.wikipedia.org/wiki/Esri_grid
    • File Compression:
Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Dataset Point of Contact Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Dataset Point of Contact Kelly Redmond
NCDC Regional Climate Director
DRI > Desert Research Institute
+1 775-674-7011
kelly.redmond@dri.edu
Coverage Description
Time Period 1961 to 2009
Spatial Reference System urn:ogc:def:crs:EPSG::3338
Spatial Bounding Box Coordinates
N: 49
S: 60
E: -113
W: -180
Spatial Coverage Map
General Documentation
Processing Documents
Publication Dates
  • publication: 2013-02-28
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose Weather in Alaska and Western Canada is highly spatially variable, so the availability of a high resolution product is necessary for many purposes in many fields, including hydrology, nearshore oceanography, biology and other land management fields. To fill that need, Oregon State University created a gridded data set of monthly precipitation and temperature in Alaska, Yukon Territory, and British Columbia.
Use Limitations
  • None
Cited Authors
  • OR-STATE > Oregon State University
Principal Investigators
  • OR-STATE > Oregon State University
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
  • Atmosphere > Precipitation > Precipitation Amount
Global Change Master Directory (GCMD) Science Keywords
  • Atmospheric - Surface - Precipitation
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Platform keywords Global Change Master Directory (GCMD) Platform Keywords
  • Meteorological Stations
Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
  • Visual Observations
  • Rain Gauges
  • Thermometers
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Continent > North America > Canada > British Columbia
  • Continent > North America > Canada > Yukon Territory
  • Continent > North America > United States Of America > Alaska
Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
  • 1 km - < 10 km or approximately .01 degree - < .09 degree
Global Change Master Directory (GCMD) Temporal Data Resolution Keywords
  • Monthly - < Annual
Stratum keywords Global Change Master Directory (GCMD) Location Keywords
  • Vertical Location > Land Surface
  • Vertical Location > Troposphere
Use Constraints No constraint information available
Other Constraints None
Fees
  • In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Lineage Statement Grids were created by resampling PRISM monthly precipitation norms between 1971-2000 (for Alaska) and 1961-1990 (for British Columbia and Yukon) from a resolution of 771 m to a resolution of 2 km. The resampled climatic norm grids were then merged for each calendar month. Proportional anomalies, or the ratio between measured monthly precipitation and the PRISM monthly norm at that location, were calculated for precipitation for each month between 1/1961 and 12/2009 at the locations of Alaskan and Canadian weather which reported at least 36 months of data within the period. Absolute anomalies, or the difference between measured monthly precipitation and the PRISM monthly norm at that location, were calculated for temperature. Anomalies were interpolated over the entire grid extent using a splines with tension approach (tension = 0.8). Gridded monthly anomalies were then multiplied by or added to the PRISM norm (for precipitation and temperature respectively) to yield a 2 km gridded estimate of total monthly precipitation and temperature in the region for all months between 1/1961 and 12/2009.
Processor
  • OR-STATE > Oregon State University
  • OR-STATE > Oregon State University
Processing Steps
  • Monthly cumulative precipitation and mean monthly temperature data were downloaded from the NCDC and Environment Canada for Alaska, British Columbia, and Yukon. A station's data was only used if it contained at least 36 months of data between 1961 to 2009.
    Rationale: Obtain monthly weather station recorecipitation and mean monthly temperature data were downloaded from the NCDC and Environment Canada for Alaska, British Columbia, and Yukon. A stads
  • Grids were created by resampling PRISM monthly precipitation norms between 1971-2000 (for Alaska) and 1961-1990 (for British Columbia and Yukon) from a resolution of 771 m to a resolution of 2 km. The resampled climatic norm grids were then merged for each calendar month. Proportional anomalies, or the ratio between measured monthly precipitation and the PRISM monthly norm at that location, were calculated for precipitation for each month between 1/1961 and 12/2009 at the locations of Alaskan and Canadian weather which reported at least 36 months of data within the period. Absolute anomalies, or the difference between measured monthly precipitation and the PRISM monthly norm at that location, were calculated for temperature. Anomalies were interpolated over the entire grid extent using a splines with tension approach (tension = 0.8). Gridded monthly anomalies were then multiplied by or added to the PRISM norm (for precipitation and temperature respectively) to yield a 2 km gridded estimate of total monthly precipitation and temperature in the region for all months between 1/1961 and 12/2009.
    Rationale: Create weather grids
Processing Documents
Source Datasets
  • Canadian Climate Data
    • Canadian Climate Data (search)
      Link to download Canadian Climate Data susing the Advanced Search Tool.
    • Description of Source: Canadian Daily Climate Data
    • Temporal extent used: 1961-01-01 to 2009-12-31
  • U.S. COOP Summary of the Month
    • U.S. COOP Summary of the Month
      More information about the U.S. COOP Summary of the Month dataset.
    • Description of Source: Monthly Climate Summaries by County
    • Temporal extent used: 1961-01-01 to 2009-01-01
  • Canadian PRISM Climatic Norm Dataset
    • Climate Source Website
      Contact information to find out more about Canadian PRISM data.
    • Description of Source: Canadian PRISM Climatic Norm Dataset
    • Temporal extent used: 1961-01-01 to 1990-12-31
  • Alaskan PRISM Climatic Norm Dataset
    • IRMA Portal
      Contact information to find out more about the source dataset.
    • Description of Source: Alaskan PRISM Climatic Norm Dataset
    • Temporal extent used: 1971-01-01 to 2000-12-31
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Last Modified: 2018-05-04
For questions about the information on this page, please email: ncei.orders@noaa.gov