| SOURCES: |
DOE/ORNL/ESD/CDIAC Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, U. S. Department of Energy
WDC/METEOROLOGY, OBNINSKWorld Data Center for Meteorology, Obninsk
DOC/NOAA/NESDIS/NCDCNational Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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