The Warming States of America

U.S. Daily Temperature Anomalies 1964-2013

U.S. Daily Temperature Anomalies 1964-2013 charts 50 years of temperature anomalies in the United States. The timeline and map plots temperature anomalies from 2,716 weather stations in the US, which have data going back 50 years.

Each station's daily temperature recordings have been compared to its corresponding monthly distribution. If the temperature at the station fell in the bottom or top 2% on a given day it is labelled an anomaly.

The map animates through the 50 years of temperature anomalies at all 2,716 weather stations. Warm anomalies are show on the map in red and cold anomalies are displayed with blue dots. Beneath the map a graph plots the yearly proportion of warm anomalies to cold anomalies. The graph shows a clear trend towards ever increasing warm anomalies in the United States.

Via googlemapsmania

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