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The MWP is generally thought to have occurred from about 950 CE to about 1250 CE, during the European Middle Ages. [2] Some researchers divide the MWP into two phases: MWP-I, which began around 450 CE and ended around 900 CE, and MWP-II, which lasted from about 1000 CE to about 1300 CE; MWP-I is called the early Medieval Warm Period while MWP-II is called the conventional Medieval Warm Period. [8]
In Chapter 7 "Observed Climate Variations and Change", the Executive Summary on page 199 noted that palaeo-climatic evidence indicated surface temperature "fluctuations including the Holocene Optimum around 5,000-6,000 years ago, the shorter Medieval Warm Period around 1000 AD (which may not have been global) and the Little Ice Age which ended ...
The Middle Eocene Climatic Optimum (MECO), also called the Middle Eocene Thermal Maximum (METM), [1] was a period of very warm climate that occurred during the Bartonian, from around 40.5 to 40.0 Ma. [2] It marked a notable reversal of the overall trend of global cooling that characterised the Middle and Late Eocene. [1]
Historical climatology is the study of historical changes in climate and their effect on civilization from the emergence of homininis to the present day. It is concerned with the reconstruction of weather and climate and their effect on historical societies, including a culturally influenced history of science and perception. [1]
Sea levels rose dramatically (and are continuing to do so), land that was depressed by glaciers began lifting up again, forests and deserts expanded, and the climate gradually became more modern. In the process of warming up, the planet saw several "cold snaps" and "warm snaps", such as the Older Dryas and the Holocene climatic optimum , as ...
Global mean surface temperatures during the MMCO were approximately 18.4 °C, about 3 °C warmer than today and 4 °C warmer than preindustrial. [5] The latitudinal zone of tropical climate was significantly extended. [6] The latitudinal climate gradient was about 0.3 °C per degree of latitude. [7]
Climate models have been quite accurate in projecting the response of global mean temperature to changes in greenhouse gases, primarily carbon dioxide, but also methane, nitrous oxide, and other ...
The climate movement is a global social movement focused on pressuring governments and industry to take action (also called climate action) ...