![]() Spring and summer temperatures that were more than 1◦C warmer than 1981–2010 Record-breaking temperatures occurred concurrently in multiple regions including North America, Europe, and Asia in late spring/summer 2018.Twenty-two percent of populated and agricultural areas of the Northern Hemisphere concurrently experienced hot extremes between May and July 2018.Concurrent 2018 hot extremes across Northern Hemisphere due to human-induced climate change. M., Zscheischler, J., Wartenburger, R., Dee, D., & Seneviratne, S. Surface air temperature 2018: Concurrent heat events (see If we lived in a world characterized by a stable climate, only 2.5% of the Earth would have been expected to have these temperatures. Probability distribution on the mean temperature anomalies reveals 2015-2018 as a period of significant warmth well above all previous years since 1850.ĭistribution of warming is uneven, but as in previous years, 2018 was characterized by very strong warming over the Arctic that significantly exceeds the Earth’s mean rate of warming.Ĥ4% of the Earth had “Very High” or higher temperatures in 2018. ![]() The probability distribution shown below clarifies this note how 2016 was markedly warmer on average than earlier years. The period since 2015 has seen some of the warmest years since 1850. The zero line represents the long-term average temperature for the whole planet blue and red bars show the difference above or below average for each year. The graph shows average annual global temperatures since 1880 ( source data ) compared to the long-term average (1901-2000). Global temperatures have been trending upwards, above the long-term average for more than 40 years. Not just Berkeley Earth documenting global temperature… Other scientific groups around the world document similar global temperature trends ![]() Warming at more than twice the rate of global mean temperatures a phenomenonĪnnual mean Arctic temperatures over the past five years (2014-18) all exceedĪrctic (land stations north of 60° N) and global mean annual land surface air temperature (SAT) anomalies (in ☌) for the period 1900-2018 relative to the 1981-2010 mean value. North of 60° N is the second highest value (after 2016) in the record starting Details on theĭatasets can be found in Table 2.1 and Figure 2.1 in the report.Īir temperature (SAT) anomaly for October 2017-September 2018 for land stations Represent different research groups’ analysis of the historical temperature record. NOAAĬ graph adapted from State of the Climate in 2017. Global Surface Temperatureġ900–2017 compared to the 1981-2010 average (dashed line). Details on the datasets can be found in Table 2.1 and Figure 2.1 in the report. The different colors represent different research groups’ analysis of the historical temperature record. NOAA graph adapted from State of the Climate in 2017. Yearly global surface temperature from 1900–2017 compared to the 1981-2010 average (dashed line). Visualizing Global Temperature Change: Ed Hawkins’ global temperature spiralĬlick! Global temperature change gif ( Ed Hawkins)Ībout the rise in global temperatures comes from multiple groups around the *Source: Berkeley Earth Land+Ocean Dataset Arctic air temperatures for the last five years (2014-2018) have exceeded all previous records since 1900.Surface air temperatures in the Arctic continued to warm at twice the rate relative to the rest of the globe.1.5 oC will be reached by 2035 at current rates. ![]()
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