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2001, 2002, and 2003. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This point shapefile represents all air monitoring stations active in California from 2001 until 2003. The data within the shapefile was obtained f... California. Air Resources Board.
2002, 2003, and 2004. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This point shapefile represents all air monitoring stations active in California from 2001 until 2003. The data within the shapefile was obtained f... California. Air Resources Board.
2020. County of Santa Clara. Geographic Information Services. This polygon shapefile represents air parcels in Santa Clara County, California. The Santa Clara County Planning Office is part of the Department o... County of Santa Clara. Geographic Information Services.
2011. United States. Environmental Protection Agency, Region IX. This polygon shapefile contains designated areas for particulate matter < 2.5 microns, according to the annual National Ambient Air Quality Stan... United States. Environmental Protection Agency, Region IX.
1966. This line shapefile contains ice observations in the Arctic region for April 1, 1966. This layer is part of the Arctic Climate System (ACSYS) Histo... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for April 1, 1967. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for April 1, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1970. This polygon shapefile contains ice observations in the Arctic region for April 1, 1970. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for April 1, 1971. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1974. This polygon shapefile contains ice observations in the Arctic region for April 1, 1974. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).