July TempLS Global Temp down slightly (0.03°C) from June

The TempLS analysis, based on GHCNV3 land temperatures and the ERSST sea temps, showed a monthly average of 0.47°C for July, down from 0.5 °C in June. This was a similar change to the previous month. There are more details at the latest temperature data page.

Below is the graph (lat/lon) of temperature distribution for July. I've also included a global interactive map of station temperatures. There has been publicity about NOAA's declaration of July as a record hot month for the contiguous USA - you can magnify to see the GHCN station readings there.




This spherical harmonics plot is done with the GISS colors and temperature intervals, and as usual I'll post a comparison when GISS comes out.

And here, from the data page, is the plot of the major indices for the last five months:



Next is the interactive plot, with some brief usage guidance below.

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Refresh Show Stations Show Mesh Magnification 2× 4× Station

How it works

The flat map at top right is your navigator. If you click a point in that, the sphere will rotate so that point appears in the centre. The buttons below allow modification. Set what you want, and press refresh. You can show stations, and the mesh, and magnify 2×, 4×, or 8× (by setting both). You can click again to unset (and press refresh).

Then you can click in the sphere. At the bottom on the right, the nearest station name and anomaly will appear. You may want to have stations displayed here. You'll see two faint numbers next to "stations". This indicates how much your clicked missed the station by (in pixels). It's not really a test of your mousing, but of my getting the alignment right (fiddly).

Arctic Storm

Neven has been tracking a big storm in the Arctic. This now seems to be having, as he predicted, an effect on the ice melt. The recent IJIS JAXA numbers show a very big drop over two days. In fact, there is almost the same ice extent now as on the same day of 2007, and less than any other year (in the period of readings since 2002) and the storm is far from spent. This is rather ominous, because in 2007 the most rapid melting was up to the first week in August, with slower melting thereafter.

I should caveat that the IJIS latest day reading is often adjusted down the next day. Neven doesn't usually show it. I'm less cautious, but you should bear this in mind.

Update 8/8. Yesterday's high JAXA melt figure held up, and another big one today, makes 2012 pass 2007 to show the least ever JAXA ice extent for 8/8. Each of the last three days well exceeds any other day's melting in the JAXA record.

June GISS Temp down 0.08°C - ice news

I thought I might be out on a limb when TempLS showed slight cooling from May to June. Both satellite measures showed significant warming. But GISS showed cooling, from 0.64 °C to 0.56 °C. Time series graphs are shown here

Meanwhile, Arctic ice has been melting. Still a little behind last year, but keeping pace.

As usual, I compare the previously posted TempLS distribution to the GISS plot.


Here is GISS:

And here is the previous TempLS spherical harmonics plot:


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