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Federal
USDA Plant Hardiness Zone Map (PHZM)
Department of Agriculture —
The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is... -
Federal
ClimoBase: Rouse Canadian Surface Observations of Weather, Climate, and Hydrological Variables, 1984-1998, Version 1
National Aeronautics and Space Administration —
ClimoBase is a collection of surface climate measurements collected in Northern Canada by Dr. Wayne Rouse between 1984 and 1998 in three locations: Churchill,... -
Federal
Arctic Water Vapor Characteristics from Rawinsondes, Version 1
National Aeronautics and Space Administration —
A gridded climatological monthly-mean data base of Arctic water vapor characteristics has been assembled by combining fixed station data with data from soundings...