Record warm Arctic

MilesAway

Bongalong
https://nsidc.org/arcticseaicenews/

According to the Forum me and DRAH have been following sea ice extent has dropped below 4m square kilometres. Another big milestone. Practically no thick ice is left in the Arctic and all the straits in the Canadian Arctic Archipelago have melted out so Arctic ice can move out of the Arctic south to oblivion down those straights.
Yeh, I'm concerned.

Talking to Dad the other day about it and he reckons the multi year ice is buggered... He said something about a glacier being demoted to non glacier status.
 

HBS Guy

Head Honcho
Staff member
I am glad I do not live in the northern hemisphere.

Here we do now get the odd incursion of Antarctic air and extreme cold fronts—the Jet Stream does not isolate Antarctica like it used to. But nothing like the northern hemisphere and Arctic.
 

pinkeye

Wonder woman
Well, it will get worse here in the Sthn Hemisphere.

It's only a matter of time.

Glad I don't have any sprogs .
 

HBS Guy

Head Honcho
Staff member
Anybody that thinks about this would realise that millions of square kilometres of ice turning into water is going to bring about changes. Siberian forests in the Arctic circle are burning in huge wildfires—climate is changing.

Dark summer oceans are going to absorb sunlight that the ice used to largely reflect back to space meaning the globe will warm faster. The Arctic ocean will evaporate more—>recipe for storms, huge precipitation and floods.

Obviously plants and animals living in the Arctic ocean and on the ice are going to be affected.

Warmer Arctic weather, winds blowing off the warmer Arctic Ocean, warmer currents from the Arctic ocean are going to see more surface loss and more sea level loss of terrestrial ice, esp from Greenland. Accelerating sea level rise.
 

DonDeeHippy

Active member
Sea levels haven't really raised much though, it's one of the arguments against Global warming... it's been 20-30 years since sea levels where supposed to raise, why haven't they ?
 

HBS Guy

Head Honcho
Staff member
Last century sea level rise was about 1.7mm/decade (something like that) while in this century so far sea levels are rising at 3.3mm/decade, a definite acceleration.
 

HBS Guy

Head Honcho
Staff member
While deniers try to imply we are talking meters of sea level rise in a century—and why aren’t the Maldives under water?—but mm per decade is what it is. Things are happening in West Antarctica tho that will see another and stronger acceleration in sea level rise. Read up on the Pine Is and Thwaites glaciers.
 

MilesAway

Bongalong
An answer...

Global sea level has been rising over the past century, and the rate has increased in recent decades. In 2014, global sea level was 2.6 inches above the 1993 average—the highest annual average in the satellite record (1993-present). Sea level continues to rise at a rate of about one-eighth of an inch per year.
 

HBS Guy

Head Honcho
Staff member
A foot higher sea level and a spring tide plus offshore wind means floods further and wider and more destructive than before.

Accelderation implies an exponential growth in SL.
 

HBS Guy

Head Honcho
Staff member
Things do grow exponentially!

There is a pond: someone puts a plant in that doubles everyday. The pond will be fully covered in 30 days. When will the pond be half covered? Day 29.

Interest in a bank account grows exponentially: You get paid interest then interest on the interest then interest on the interest on the interest etc. At 10% the account will double in 7 years.

Eutrophication—exponential growth of algae in water containing nutrients.
 

HBS Guy

Head Honcho
Staff member
Nothing grows exponentially forever, except in pure maths. Nutrients, space etc run out.
 

DonDeeHippy

Active member
An answer...

Global sea level has been rising over the past century, and the rate has increased in recent decades. In 2014, global sea level was 2.6 inches above the 1993 average—the highest annual average in the satellite record (1993-present). Sea level continues to rise at a rate of about one-eighth of an inch per year.
  • Sea level has risen 8–9 inches (21–24 centimeters) since 1880.
  • In 2019, global sea level was 3.4 inches (87.61 mm) above the 1993 average—the highest annual average in the satellite record (1993-present)
It's crap like that, that shits me, how could they possibly know sea levels in 1880 when they have only been able to accurately measure since 1993... this is the reason why these sites are so easily picked apart.....
One lie and the whole piece is suss...


Mr monk is quoting one-eighth of a inch rise every decade (3mm)... which one is right ?
 
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