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Weather Underground was created in 1968, during a tumultuous moment in American and world history. To many, it appeared that national liberation movements and left-leaning revolutionary or guerrilla movements were harbingers of a different world than that which prevailed into the 1950s.How does Weather Underground work?
How Does Weather Underground work? Weather Underground uses observations from over 250,000 personal weather stations worldwide. The Weather Underground's WunderMap overlays weather data from personal weather stations and official NWS stations on a Mapbox Map base and provides many interactive and dynamically updated weather and environmental layers.What are temperature records?
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. Older time periods are studied by paleoclimatology.