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Projected global surface temperature changes relative to 1850–1900, based on CMIP6 multi-model mean changes. The IPCC Sixth Assessment Report defines global mean surface temperature (GMST) as the "estimated global average of near-surface air temperatures over land and sea ice, and sea surface temperature (SST) over ice-free ocean regions, with changes normally expressed as departures from a ...
Original source page, titled "Global Temperature Anomalies from 1880 to 2019" Visualizations by Lori Perkins, includes the descriptions: "This color-coded map in Robinson projection displays a progression of changing global surface temperature anomalies. Normal temperatures are the average over the 30 year baseline period 1951-1980.
There is good agreement on the overall evolution of global temperatures and year-to-year variability. Dataset anomalies are calculated relative to a 1981 to 2010 baseline and offset by 0.69°C, which is the best estimate difference for that period from the 1850-1900 average given in the IPCC sixth assessment report."
The global average temperature from June 2023 to May 2024 was 1.63 degrees Celsius above the pre-industrial average, a worrying trend that could signify that the world is moving closer to the ...
The global average covers 97-98% of Earth's surface, excluding only latitudes above +85 degrees, below -85 degrees and, in the cases of TLT and TMT, some areas with land above 1500 m altitude. The hemispheric averages are over the northern and southern hemispheres 0 to +/-85 degrees. The gridded data provide an almost global temperature map. [3]
September 2023 was the warmest September on record globally with an average air temperature of 16.38C - nearly 1C hotter than the average between 1991 and 2020. ... the average global temperature ...
The temperature in the years 2011-2020 was 1.09 °C higher than in 1859–1890. The temperature on land rose by 1.59 °C while over the ocean it rose by 0.88 °C. [3] In 2020 the temperature was 1.2 °C above the pre-industrial era. [4]
Nine of the 10 hottest years on record have occurred in the last decade, say NASA and the National Oceanic and Atmospheric Administration. 2022 tied for the fifth-hottest year on record, NASA says ...