‘Mindboggling’ Arctic heatwave breaks records

‘Mindboggling’ Arctic heatwave breaks records

‘Profound heatwaves’ in region will be more common, warns meteorologist

Floating ice in the Arctic Ocean in September 2020

the Independent,

24 May, 2021

A “mind-boggling” heat wave in the Arctic has broken temperature records in north-west Russia,  meteorologists have said.

Last Wednesday, the mercury rose above 30C in parts of the Arctic, significantly above the average for the time of year.

Scott Duncan, a meteorologist based in the UK, described conditions as “truly exceptional for any time of the year but mind-boggling for May”.

The climate expert added that because the Arctic is warming so fast, “profound heatwaves” are more likely to occur in the future.

Increasing temperatures are causing ice and permafrost to melt in the region, resulting in previously trapped methane being released into the atmosphere and contributing to global heating.

The current heatwave looks set to continue, with climate scientist Zack Labe saying that over the coming week temperatures will be more than 10C above average in eastern Siberia.

Although still shocking, the temperatures seen this month are well below the hottest ever day in the Arctic, which was the 38C recorded in the Siberian town of Verkhoyansk last year.

At the time, the CBS News meteorologist Jeff Berardelli described the record as “the kind of weather we expect by 2100, 80 years early”.

“For perspective Miami has only reached 100 degrees [37.7C] once on record,” he added.

The latest temperature record comes shortly after a new study said the region has warmed three times faster than the rest of the Earth over the past half century.

Published by the Arctic Monitoring and Assessment Programme (AMAP), the report warned that temperature changes in the Arctic could have far-reaching consequences across the world, including on issues such as rising sea levels.

Its findings were discussed last week by the Arctic Council, a group of countries which includes the US and Russia.

The council’s 12th ministerial meeting took place in Reykjavik, Iceland, on Thursday, with discussion centring on its four major issues: climate change, human health, Arctic shipping and innovation in local communities.

Let’s wait and see. I don’t reject too much that challenges my preconceptions if it is accurate.

Polar vortex regains it’s shape and position over the Arctic weather update 31 May 2021

Summary: the chaotic climate that we’ve been experiencing in Europe with unseasonably cold temperatures could be over.

The Polar Vortex has regained its normal spherical shape and most of all its position over the Arctic. I compare it in this video with an image of the polar vortex of 04 may 2021 when there were 4 clusters.

 

Unlike the following trio I am not longer into confirmation bias but stick to what I can confirm.

First point I would like to make (apart from Kevin Hester’s foul language) is – Guy McPherson is NOT an ecologist.

When I heard the first section on stratification of the oceans (which was indeed new to me) I thought I was going to get some solid science but listening further I found there was usually a critique of the question (do these people have to pay to get a response from their guru?) and a quick two sentence reply.

Where has the science from yesteryear gone?

See if you get more from this discussion than I did (I stopped listening half-way through)

Increasing ocean stratification over the past half-century

Abstract

Seawater generally forms stratified layers with lighter waters near the surface and denser waters at greater depth. This stable configuration acts as a barrier to water mixing that impacts the efficiency of vertical exchanges of heat, carbon, oxygen and other constituents. Previous quantification of stratification change has been limited to simple differencing of surface and 200-m depth changes and has neglected the spatial complexity of ocean density change. Here, we quantify changes in ocean stratification down to depths of 2,000 m using the squared buoyancy frequency N2 and newly available ocean temperature/salinity observations. We find that stratification globally has increased by a substantial 5.3% [5.0%, 5.8%] in recent decades (1960–2018) (the confidence interval is 5–95%); a rate of 0.90% per decade. Most of the increase (~71%) occurred in the upper 200 m of the ocean and resulted largely (>90%) from temperature changes, although salinity changes play an important role locally.

Russian Arctic Methane Releases & Subsea Permafrost Degradation | Prof Örjan Gustafsson (Pt 2)

Guy McPherson pointed this out years ago when he was still actively doing science.

Why has the Amazon flipped from carbon sink to carbon source?

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