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The Copernicus Programme reported that 2024 continued 2023's series of record high global average sea surface temperatures. [12]2024 Southeast Asia heat wave. For the first time, in each month in a 12-month period (through June 2024), Earth’s average temperature exceeded 1.50 °C (2.70 °F) above the pre-industrial baseline.
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] In September 2023 the temperature was 1.75 °C above pre-industrial level and during the entire year of 2023 is expected to be 1.4 °C above it. [5]
The geologic temperature record are changes in Earth's environment as determined from geologic evidence on multi-million to billion (10 9) year time scales. The study of past temperatures provides an important paleoenvironmental insight because it is a component of the climate and oceanography of the time.
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).
Global surface temperature (GST) is the average temperature of Earth's surface. More precisely, it is the weighted average of the temperatures over the ocean and land. The former is also called sea surface temperature and the latter is called surface air temperature. Temperature data comes mainly from weather stations and satellites.
9 July (reported): for the first time, in each month in a 12-month period (through June 2024), Earth's average temperature exceeded 1.5 °C above the pre-industrial baseline. [ 19 ] 21 July: the highest daily global average temperature is recorded at 17.09 °C (62.76 °F), surpassing the previous record of 17.08 °C (62.74 °F) on 6 July 2023.
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The potential temperature of the mantle is estimated to be about 1350 C today. There is an analogous potential temperature of the core but since there are no samples from the core its present-day temperature relies on extrapolating the temperature along an adiabat from the inner core boundary, where the iron solidus is somewhat constrained.