The Dot maps were replaced in 2012 with a color shaded map. The darker the red color is, the larger the positive temperature anomaly and the darker the blue shade is, the larger the negative termpature anomaly. Note that on the dot maps, BLUE is BELOW normal and RED is ABOVE normal, and the size of the dot is proportional to the magnitude of the anomaly.
These maps are a product of a merged land surface and sea surface temperature anomaly analysis. Temperature anomalies with respect to the 1971-2000 mean for land and ocean are analyzed separately and then merged to form the global analysis. Temperature anomalies are noted in degrees Centigrade. The maps and data analysis are from the National Climatic Data Center. This page was produced within the Applied Climate Science Group of the School of Natural Resources, UNL.