Archives par mot-clé : Jet streams

better to know...?, climate-debate

Models, Climate Scientists Wrong Again…New Study Finds Jet Stream Strengthening, Not Weakening

by P. Gosselin,  Aug 9, 2022 in NoTricksZone

Alarmist climate research centers like the Potsdam Institute and the unquestioning media have been claiming for years that the Jet Stream is weakening, hence this would lead to greater weather extremes across the northern hemisphere due to blocking. Responsible for this of course is man-made global warming.

Hat-tip: The Klimaschau

But a recent paper by Samantha Hallam et al published in the journal Climate Dynamics looks at the seasonal to decadal variations in Northern Hemisphere jet stream latitude and speed over land for the period 1871–2011. The authors were unable to find any weakening of the sort climate alarmists have been warning about.

Quite to the contrary, the authors in fact found that the winter jet stream over the North Atlantic and Eurasia has increased in average speed by 8% to 132 mph. The authors found the 141-year trends in jet latitude and speed show differences on a regional basis and that jet speed shows significant increases evident in winter (up to 4.7 ms −1 ), spring and autumn over the North Atlantic, Eurasia and North America. Over the North Pacific, no increase was observed.

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Moreover, the Jet Stream was found to have shifted northward by some 330 kilometers. Overall, the paper’s findings contradict the claims of a weakening Jet Stream regularly made by the climate alarmists and their media minions.

Applying climate alarmist science, we’d have to conclude now, due to the strengthening Jet Stream, less weather extremes should be expected. This would be good news of course. But don’t expect the fear-porn media to look at this.

climate-debate

ACCUWEATHER METEOROLOGIST: GLOBAL WARMING NOT TO BLAME FOR NORTHWEST’S HEATWAVE

by Cap Allon, June 30, 2021 in Elecroverse

Record heat has been felt across the the Pacific Northwest this week, which has led the MSM and their placard-brandishing, sandal wearing EOTW groupies to draw the connection to ‘global warming’ aka ‘the climate crisis’ aka ‘terrifying terra firma broiling’.

However, AccuWeather Meteorologist Joe Lundberg is on the record as saying that AGW isn’t to blame here.

Risking a backlash from his bosses, and from those faceless elites on high, Lundberg very reasonably states: “I just think that right now we’re seeing a very unusual pattern across most of the northern hemisphere where there’s a lot of extremes.”

Lunberg sees erratic jet streams as the main culprit here, which, as Electroverse has been saying for years, are weakening due to historically low solar activity — and while Lunberg doesn’t touch on solar output, he does reference a “big upper level trough that’s in the Aleutians”.

Right now, weather patterns across the country are very unusual, explains Lundberg: “Downstream, there’s a massive upper level ridge that’s in the Northwest, that’s why they’re seeing the record heat there.

“And then downstream along the eastern seaboard, we’re also seeing another upper level ridge.

“But not everyone’s getting this heat,” adds Lundberg — far from it, “across the deep south, for example, it’s actually cooler than average and looks like its gonna stay that way for the foreseeable future.”

Latest GFS runs see temperature departures some 16-20C below the seasonal average across vast regions, particularly in New Mexico:

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