Editing Climate (section)

==Record==

===Paleoclimatology===
{{Main|Paleoclimatology}}

Paleoclimatology is the study of past climate over a great period of the [[Earth]]'s history. It uses evidence with different time scales (from decades to millennia) from ice sheets, tree rings, sediments, pollen, coral, and rocks to determine the past state of the climate. It demonstrates periods of stability and periods of change and can indicate whether changes follow patterns such as regular cycles.<ref>[[National Oceanic and Atmospheric Administration]]. [http://www.ncdc.noaa.gov/paleo/paleo.html NOAA Paleoclimatology.] {{Webarchive|url=https://web.archive.org/web/20200922100042/http://www.ncdc.noaa.gov/paleo/paleo.html |date=2020-09-22 }} Retrieved on 2007-06-01.</ref>

===Modern===
{{see also|Instrumental temperature record|Satellite temperature measurements}}
Details of the modern climate record are known through the taking of measurements from such weather instruments as [[thermometer]]s, [[barometer]]s, and [[anemometer]]s during the past few centuries. The instruments used to study weather over the modern time scale, their observation frequency, their known error, their immediate environment, and their exposure have changed over the years, which must be considered when studying the climate of centuries past.<ref>{{cite web |first=Spencer |last=Weart |url=http://www.aip.org/history/climate/20ctrend.htm |url-status=dead |title=The Modern Temperature Trend |publisher=American Institute of Physics |archive-url=https://web.archive.org/web/20200922100047/http://www.aip.org/history/climate/20ctrend.htm |archive-date=2020-09-22 |access-date=2007-06-01}}</ref> Long-term modern climate records skew towards population centres and affluent countries.<ref>{{Citation |last1=Vose |first1=R. S. |last2=Schmoyer |first2=R. L. |last3=Steurer |first3=P. M. |last4=Peterson |first4=T. C. |last5=Heim |first5=R. |last6=Karl |first6=T. R. |last7=Eischeid |first7=J. K. |date=1992-07-01 |title=The Global Historical Climatology Network: Long-term monthly temperature, precipitation, sea level pressure, and station pressure data |language=English |publisher=U.S. Department of Energy. Office of Scientific and Technical Information |doi=10.2172/10178730 |osti=10178730 |doi-access=free }}</ref> Since the 1960s, the launch of satellites allow records to be gathered on a global scale, including areas with little to no human presence, such as the Arctic region and oceans.