Monthly Archives: August 2017

Global Temperature July 2017 Preliminary

Climate Forecast System Reanalysis (CFSR) monthly global surface temperature anomaly estimates for 2014 through July 2017 from the University of Maine Climate Change Institute (UM CCI) and from WeatherBELL (WxBELL) are graphed below, along with monthly global temperature anomaly estimates for the lower troposphere derived from satellite measurements provided by the University of Alabama at Huntsville (UAH).  The UM CCI CFSR estimates have been adjusted (UM adj), while the WxBELL CFSR estimates have been left unadjusted to show the difference.  All three of these estimates showed small increases from June to July in 2017.  The UM CCI CFSR adjusted monthly estimate for June 2017 is based on final daily averages and the estimate for July 2017 is based on preliminary daily averages, and thus these estimates may change slightly when the final monthly estimates are released.  Click on the graph below to see a larger copy.

Also shown for comparison are monthly global temperature anomaly estimates from seven other major sources, including lower tropospheric estimates from the Remote Sensing Systems (RSS), and surface estimates from the European Centre for Medium-Range Weather Forecast (ECMWF) Reanalysis Interim adjusted (ERAI adj), US National Center for Environmental Information (NCEI), US National Aeronautics and Space Administration (NASA) Goddard Institute of Space Studies (GISS), the UK Hadley Climate Research Unit Temperature version 4 (CRUT4), and the Berkeley Earth Surface Temperature (BEST), all final through June 2017. All estimates have been shifted to the latest climatological reference period 1981-2010.

Update 2017 August 7

Final July 2017 global temperature anomaly estimates from RSS and ERAI adj have been added to the graph and the UM CCI July estimate has been updated based on final daily estimates.