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The blue line represents global surface temperature reconstructed over the last 2,000 years using proxy data from tree rings, corals, and ice cores. [1] The red line shows direct surface temperature measurements since 1880. [2] Global surface temperature (GST) is the average temperature of Earth's surface.
Global average temperatures show that the Medieval Warm Period was not a planet-wide phenomenon, and that the Little Ice Age was not a distinct planet-wide time period but rather the end of a long temperature decline that preceded recent global warming. [1] The temperature record of the last 2,000 years is reconstructed using data from climate ...
The initial version of Global Historical Climatology Network was developed in the summer of 1992. [3] This first version, known as Version 1 was a collaboration between research stations and data sets alike to the World Weather Records program and the World Monthly Surface Station Climatology from the National Center for Atmospheric Research. [4]
From 1978 onward CRU began production of its gridded data set of land air temperature anomalies based on instrumental temperature records held by National Meteorological Organisations around the world. In 1986 sea temperatures were added to form a synthesis of data which was the first global temperature record, demonstrating unequivocally that ...
The world just experienced its hottest April on record, extending an 11-month streak in which every month set a temperature record, the European Union's climate change monitoring service said on ...
Pollack, Huang & Shen 1998 "Climate change record in subsurface temperatures: A global perspective". Mann, Bradley & Hughes 1999 "Northern hemisphere temperatures during the past millennium: Inferences, uncertainties, and limitations". Briffa 2000 "Annual climate variability in the Holocene: interpreting the message of ancient trees".
The global temperature was about 1.5 degrees Fahrenheit over the 1991-2020 average for the month of February, and about 0.2 degrees warmer than the previous February record.
The average global temperature for the 12-month period to the end of May was 1.63 degrees Celsius (2.9 degrees Fahrenheit) above the pre-industrial average - making it the warmest such period ...