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"These calculations produce the global average temperature deviations from the baseline period of 1951 to 1980." "NASA’s full 2018 surface temperature data set — and the complete methodology used to make the temperature calculation — are available at: https://data.giss.nasa.gov/gistemp".
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]
English: This is a key to a world map showing surface temperature trends between 1950 and 2014. Temperature trends range from -0.5 to +0.5 degrees celsius per decade, and are shown by color gradients: Cooling trend: dark to light blue; No trend: white; Warming trend: light to dark orange
Temperature measurements are also made by GPS radio occultation. [31] This technique measures the refraction of the radio waves transmitted by GPS satellites as they propagate in the Earth's atmosphere, thus allowing vertical temperature and moisture profiles to be measured.
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]
On Thursday, the average global temperature reached 17.23 degrees Celsius, or 63.01 degrees Fahrenheit, the highest since NCEP records first started in 1979, according to the University of Maine's ...
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 ...
Recently analyzed satellite data reveals that the Lut Desert in Iran hit a global surface temperature record of 177.4 degrees Fahrenheit in 2018. Summers can be hot in Death Valley, California.