Global heat stress intensification and its expanding footprint

[John Nissen]

Global heat stress intensification and its expanding footprint on the human population | Nature Climate Change https://share.google/k9833aideLymR2nr8 

[John Nissen]

I looked up a reference just now [1], and found I could not access it, as I might have in the past.  Perhaps I missed it by a few hours!  Here is the notice I received:

The NSF Public Access Repository will be updated to support the latest award terms and conditions on June 26, 2026, between 7am-5pm. Users may notice changes to their records in PAR as embargo updates are applied.

Trump at work?

Anyway, my interest was in the claim that, not only are periods of extreme weather getting longer, but that this is accelerating.  The paper tries to relate the trend to global warming, but I think that the Arctic rapid warming effect on the jet stream, causing it to meander and stick more, is the real culprit.  The heat domes we are suffering here in Europe are due to a sticking jet stream.  There is very little wind to move the dome away.  Has anybody been monitoring the jet stream recently?

Cheers, John

[1] Martinez-Villalobos et al (Nature Geoscience, 2025)

Accelerating increase in the duration of heatwaves

https://par.nsf.gov/servlets/purl/10621726

[John Nissen]

Has anyone been monitoring the jet stream?  The heat dome we've just had in W Europe could be due to a sticking jet stream wave.  Have other parts of the NH also experienced a sticking jet stream?  

Cheers, John

[Paul Beckwith]

My recent video…

Jet Streams Connect European Heat Waves & Atlantic Ocean Cold Blob & North American Heat Waves: Chat

https://youtu.be/pIVhrjAoteA?si=5c36IlECymGs7vdm

On Wed, Jun 24, 2026 at 5:07 PM John Nissen <johnnis...@gmail.com> wrote:

Global heat stress intensification and its expanding footprint on the human population | Nature Climate Change https://share.google/k9833aideLymR2nr8 

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[Douglas Grandt]

John,

I take screenshots periodically here and the jet has changed little since mid-June 

These four show UK and EU from an extreme oblique angle June 15, 25 and 30, and I rotated the fourth directly over Europe to clearly show the jet allowing hot tropical air in to toast you to a crisp.

FYI, it correlates with New England’s mild, unusually cold the past couple weeks and current extreme heat climbing through this week across the U.S.

Doug

Sent from my iPhone (audio texting)

On Jul 1, 2026, at 4:10 AM, John Nissen <johnnis...@gmail.com> wrote:



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[DrPete Sudbury]

"The paper tries to relate the trend to global warming, but I think that the Arctic rapid warming effect on the jet stream, causing it to meander and stick more, is the real culprit."

... is a false antithesis, given it is global warming that causing the differential heating of poles vs equator, and theme the wandering jetstream.

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