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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 ...
800,000-, 2,000-, 139-year global average temperature —— Further includes an 800,000 year chart Temperature reconstruction last two millennia —— source of top chart 20190727 COMPARE warming stripes - Global vs Caribbean 1910-2018 (ref 1910-2000) —— top warming stripes graphic (global) uses same data (NOAA) as the bottom chart
The IPCC Fifth Assessment Report (AR5 WG1) of 2013 examined temperature variations during the last two millennia, and concluded that for average annual Northern Hemisphere temperatures, "the period 1983–2012 was very likely the warmest 30-year period of the last 800 years (high confidence) and likely the warmest 30-year period of the last ...
Top chart: Earth's climate has cycled between ice ages and warm interglacial periods, with each cycle taking tens of thousands of years or more. Middle chart: Global average temperature was in a cooling trend for thousands of years before fossil fuel based industrialization. Since then, it has increased about a full 1°C—in a time period less ...
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 ...
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."
Data released by the Copernicus Climate Change Service last week showed that March of 2023 was the planet’s second-warmest month in recorded history, registering average global temperatures 0.92 ...
Annual data comprises the arithmetic average of twelve month's data from the NOAA/NCEI source. 2023 data in Version 1 is through October 2023. Source of data for series of charts titled "mm Month - Percent of global area at temperature records - Global warming - NOAA.svg": — Source's title/subtitle: "Mean Monthly Temperature Records Across ...