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It has also been known by many other names, such as Altithermal, Climatic Optimum, Holocene Megathermal, Holocene Optimum, Holocene Thermal Maximum, Holocene global thermal maximum, Hypsithermal, and Mid-Holocene Warm Period. The warm period was followed by a gradual decline, of about 0.1 to 0.3 °C per millennium, until about two centuries ago ...
Bølling oscillation warm and wet in the North Atlantic, begins the Bølling-Allerød period (B-S) 12,400–11,500 (much discussed) Older Dryas cold, interrupts warm period for some centuries (B-S) 12,000–11,000: Allerød oscillation warm & moist (B-S) 11,400–9,500: Huelmo–Mascardi Cold Reversal cold in Southern Hemisphere: 10,800–9,500
The largest recorded temperature change in one place over a 24-hour period occurred on January 15, 1972 in Loma, Montana, when the temperature rose from −54 to 49 °F (−47.8 to 9.4 °C) . The most dramatic temperature changes occur in North American climates susceptible to Chinook winds.
Despite being based on data from the mid-20th century, the temperature records represent the warmest period the planet has seen in at least 100,000 years, scientists have found from many millennia ...
Temperatures soared to an average high in July that far exceeded regular temps, and the warmth of fall is lasting longer than usual. Earth just recorded its hottest 12-month period. How did Boise ...
Across much of America and especially in the normally chilly north, the country went through the winter months without, well, winter. In parka strongholds Burlington, Vermont, and Portland, Maine ...
Global average temperatures show that the Medieval Warm Period was not a global phenomenon. [1]The Medieval Warm Period (MWP), also known as the Medieval Climate Optimum or the Medieval Climatic Anomaly, was a time of warm climate in the North Atlantic region that lasted from about 950 CE to about 1250 CE. [2]
The IPCC Fifth Assessment Report (AR5 WG1) of 2013 examined temperature variations during the last two millennia, and concluded that for average annual Northern Hemisphere temperatures, "the period 1983–2012 was very likely the warmest 30-year period of the last 800 years (high confidence) and likely the warmest 30-year period of the last ...