![]() April 2019 marks the 412th consecutive month and the 43rd consecutive April with temperatures, at least nominally, above the 20th century average. April's temperature departure of 0.93☌ (1.67☏) above the 20th century average ranked second to April 2016 (+1.08☌ / +1.94☏). ![]() April Temperatureįor a second consecutive month, the global land and ocean surface temperature was the second highest for April since global records began in 1880. The average position of the upper-level ridges of high pressure and troughs of low pressure-depicted by positive and negative 500-millibar height anomalies on the April 2019 map-is generally reflected by areas of positive and negative temperature anomalies, respectively, at the surface. In the atmosphere, 500-millibar height pressure anomalies correlate well with temperatures at the Earth's surface. Global Annual Temperature Rankings Outlook.2019 Year-to-date Temperature versus Previous Years.The percentile map on the right provides additional information by placing the temperature anomaly observed for a specific place and time period into historical perspective, showing how the most current month, season or year compares with the past. For more information, please visit NCEI's Global Surface Temperature Anomalies page. Temperature anomalies for land and ocean are analyzed separately and then merged to form the global analysis. The anomaly map on the left is a product of a merged land surface temperature ( Global Historical Climatology Network, GHCN) and sea surface temperature (ERSST.v4) anomaly analysis as described in Huang et al. Temperature anomalies and percentiles are shown on the gridded maps below.
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