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www.space.com/17816-earth-temperature.html

This image shows temperature of the Earth’s surface or clouds covering it for the month of April 2003. The scale ranges from -81 degrees C (-114 F) in black/blue to 47 C (116 F) in red.

www.universetoday.com/55043/earths-temperature

The average temperature on the surface of Earth depends on a number of factors. These include the time of day, the time of year, and where the temperatures measurements are being taken. Given that ...

www.climate.gov/news-features/videos/history-earths...

2016 was the third year in a row that global average surface temperature set a new record, and the fifth time the record has been broken since the start of the twenty-first century. This animation shows the yearly history of Earth's temperature since the modern record began in 1880.

www.physics-in-a-nutshell.com/article/17

During the past 40 million years the global mean temperature has been varying by only 10 degrees Kelvin and in the past 10.000 years the variation was only of about 1 degree. [2] Thus, even on large time scales the earth's temperature can be regarded as constant. In other words: There is no net transfer of heat from or to the earth's surface.

en.wikipedia.org/wiki/Temperature_record

The global temperature record shows the fluctuations of the temperature of the atmosphere and the oceans through various spans of time. The most detailed information exists since 1850, when methodical thermometer-based records began. There are numerous estimates of temperatures since the end of the Pleistocene glaciation, particularly during the current Holocene epoch.

www.reference.com/science/temperature-range-earth-149a53c6...

The Earth's approximate average temperature is 61 degrees. The hottest ever recorded air temperature on Earth was 134 degrees, which was recorded in 1913 in Death Valley, California. The highest recorded surface temperature was higher, reaching 159 degrees in the Lut Desert of Iran in 2004.

earthobservatory.nasa.gov/features/GlobalWarming/page2.php

Global warming is the unusually rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. The global average surface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6° F) between 1906 and 2005, and the rate of temperature increase has nearly ...

www.climate.gov/news-features/understanding-climate/2012...

Temperatures in 2012 were slightly higher than those of 2011. Change over time. Earth’s average annual surface temperature is higher today than it was when record keeping began in the mid- to late 1800s, an indicator of long-term, global-scale climate warming.

en.wikipedia.org/wiki/Geothermal_gradient

Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is about 25–30 °C/km (72-87 °F/mi) of depth near the surface in most of the world. Strictly speaking, geo-thermal necessarily refers to the Earth but the concept may be applied to other planets.

climate.nasa.gov/vital-signs/global-temperature

An example of a temperature anomaly is how much warmer or colder than the long-term average a unit of time something is (like how much warmer than average the most recent year was globally). The time series below shows the five-year average variation of global surface temperatures. Dark blue ...