I am posting this latest update a day early – on the 1st August instead of the usual 2nd August – because, as I mentioned recently, there is no certainty there will be any data reported on the NSIDC website as from 31 July. As it happens, the scare tactics – if such they were – have been overcome by introducing a new source of Arctic Sea Ice Extent data (‘new’ in NSIDC usage anyway) to replace the now defunct source previously used by NOAA/NSIDC. But since this is not to be a smooth transition (see image below) there may be some delay in further data being shown on NSIDC. So, we are short of one day’s data (1 Aug*) for now. No matter, I will update later if necessary.
* That data marks the actual end of previous month (July) and is usually received on 2nd day of the month.
There is one thing to note however. The last time I looked at the JAXA data, it was showing around 100,000 Km2 less extent that the NOAA same day data. How that will be reconciled, I don’t know.
I therefore cannot show you the end of month situation yet, and who knows when that may be available. But here is the current picture…
This is a more close-up image than usual because the data lines for July 2025 (blue line) are closely intertwined with that of July 2025 (green line). The extent data for July 31 is actually 6.464 Million Km2, so with one more day to go, I estimate it might be around 6.43 MKm2 at month end. I have optimistically used that value in the July spreadsheet below. It can be corrected later, after we have the new data.
What this shows is that there is only a slim chance that this month, as an average value for the current decade, to be a positive outcome for Arctic Sea Ice Extent over the previous decade. But it will be more or less on par with the results for that decade. Which has great meaning, that the current decade will not see the million Km2 extra loss of sea ice per decade which has occured over the previous two decades. My prediction that this decade will be a turning point in the Northern Sea Ice story, in line with the expected arrival of the next glacial period in Earth’s history, quite soon – in geological terms.
I am going to leave this there, for now, in order to get this information out there in a timely manner. But, as a taster, please look at additional information I have placed below. I expect to say more on this, perhaps tomorrow or in the next few days. It is quite interesting.
No, Space.com, Cutoff of Satellite Sea-Ice Data Won’t Make Any Difference – Anthony Watts – Climate Realism – July 15, 2025
Not Something Else 
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