The global time series is produced from the Smith and Reynolds blended land and ocean data set (Smith et al., 2008). Global-average anomalies are calculated on an annual time scale. The global anomalies are provided with respect to the period 1901-2000, the 20th century average. Land surface temperatures are from the Global Historical Climate Network-Monthly (GHCN-M). Sea surface temperatures are determined using the extended reconstructed sea surface temperature (ERSST) analysis. ERSST uses the most recently available International Comprehensive Ocean-Atmosphere Data Set (ICOADS) and
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Data
This page features Federal climate data resources as well as select datasets associated with the Third National Climate Assessment.
Climate.Data.Gov
As part of the Administration's Climate Data Initiative, climate.data.gov provides access to Federal resources to help America’s communities, businesses, and citizens plan and prepare for climate change.climate.data.gov