Tuesday, July 16, 2019

GISS June global up 0.07°C from May.

The GISS V4 land/ocean temperature anomaly rose 0.07°C in June. The anomaly average was 0.93°C, up from May 0.86°C. It compared with a 0.067°C rise in TempLS V4 mesh. As with TempLS, it was the warmest June in the record, also by a considerable margin (0.11°C).

The overall pattern was similar to that in TempLS. Hot in most of Europe, extending into Africa and the Middle East. Cool in W Siberia, but hot in the NE. Cool in US/Canada, but warm in S America. Antarctica was mostly cool.

As usual here, I will compare the GISS and earlier TempLS plots below the jump.

Here is GISS V4

And here is the TempLS V4 LOESS-based plot

This post is part of a series that has now run for six years. The GISS data completes the month cycle, and is compared with the TempLS result and map. GISS lists its reports here, and I post the monthly averages here.
The TempLS mesh data is reported here, and the recent history of monthly readings is here. Unadjusted GHCN is normally used, but if you click the TempLS button there, it will show data with adjusted, and also with different integration methods. There is an interactive graph using 1981-2010 base period here which you can use to show different periods, or compare with other indices. There is a general guide to TempLS here.

The reporting cycle starts with a report of the daily reanalysis index on about the 4th of the month. The next post is this, the TempLS report, usually about the 8th. Then when the GISS result comes out, usually about the 15th, I discuss it and compare with TempLS. The TempLS graph uses a spherical harmonics to the TempLS mesh residuals; the residuals are displayed more directly using a triangular grid in a better resolved WebGL plot here.

A list of earlier monthly reports of each series in date order is here:
  1. NCEP/NCAR Reanalysis report
  2. TempLS report
  3. GISS report and comparison with TempLS


  1. I update my prediction for GISS temperature anomaly using data up to Jun19.
    JJA19 0.86+-0.08
    SON19 1.00+-0.14
    J-D19 0.94+-0.06
    DJF20 1.00+-0.23
    MAM20 1.02+-0.20
    JJA19 0.90+-0.08
    SON19 1.03+-0.14
    J-D19 0.98+-0.06
    DJF20 1.05+-0.21
    MAM20 1.05+-0.20
    The year 2019 of the GISS LOTI will be most likely the second warmest, only behind 2016.

  2. Hi Nick, do you know of an annual version of your 'NCEP/NCAR daily anomalies to present' chart? In other words a chart showing the last dozen or so years with a plot 'to date' so we can see how 2019 is doing on the bar chart? Btw Loydo is giving it to the denizens at the moment.

    1. Tony,
      Sorry, I don't know of such a chart. But above the Moyhu daily table is a link to a zip file which has about 25 years of daily data. It is kept up to date (despite the name).