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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 ...
According to IPCC Sixth Assessment Report, in the last 170 years, humans have caused the global temperature to increase to the highest level in the last 2,000 years. The current multi-century period is the warmest in the past 100,000 years. [3] The temperature in the years 2011-2020 was 1.09 °C higher than in 1859–1890.
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".
δ 18 O, a proxy for temperature, for the last 600,000 years (an average from several deep sea sediment carbonate samples) [a]. The 100,000-year problem (also 100 ky problem or 100 ka problem) of the Milankovitch theory of orbital forcing refers to a discrepancy between the reconstructed geologic temperature record and the reconstructed amount of incoming solar radiation, or insolation over ...
Scientists have compared this year’s climate-change fallout to “a disaster movie” — soaring temperatures, fierce wildfires, powerful storms and devastating floods — and new data is now ...
Preliminary data from the Copernicus Climate Change Service shows that global temperature anomalies reached between 1.5 and 1.6 degrees Celsius (between 2.7 and 2.9 degrees Fahrenheit) above pre ...
500 million years of climate change Ice core data for the past 400,000 years, with the present at right. Note length of glacial cycles averages ~100,000 years. Blue curve is temperature, green curve is CO 2, and red curve is windblown glacial dust (loess). Scale: Millions of years before present, earlier dates approximate.
Sunday was the hottest day ever recorded on Earth, according to data from the European Union’s Copernicus Climate Change Service. The average global temperature reached 17.09 degrees Celsius, or ...