Donate Bitcoin

Donate Paypal


PeakOil is You

PeakOil is You

The Greenland Thread

Re: The Greenland Thread

Unread postby Plantagenet » Fri 08 Jun 2018, 21:23:23

jawagord wrote:Looks like another big accumulation year for the Greenland Snow Mass Balance.

http://polarportal.dk/fileadmin/polarpo ... 180607.png


As the planet warms there is a tendency for more snow to fall in winter because warmer air can hold more water vapor.

However, there is also a tendency for more ablation to occur in the summer, and the data clearly shows the annual mass balance has been negative almost every year for Greenland for years now, resulting in huge losses in ice volume from this ice sheet.

Cheers!
"Its a brave new world"
---President Obama, 4/25/16
User avatar
Plantagenet
Expert
Expert
 
Posts: 21134
Joined: Mon 09 Apr 2007, 02:00:00
Location: Alaska (its much bigger than Texas).

Re: The Greenland Thread

Unread postby jawagord » Sat 09 Jun 2018, 08:18:24

Anecdotal comments don't really add much to the discussion when it so easy to find observations to the contrary. Scientist have been studying Greenland for less than 40 years that's not long enough to know how the ice sheets that have existed for millions of years behave, but generally more snow takes longer to melt!

The 2017 melt season was less intense than recent years, and was below average melt in the 1981 to 2010 reference period. Surface melting was particularly low in southeastern Greenland.In general, melting was limited to low elevations (below 1500 meters or 4900 feet) along the western and northeastern coastlines. Fewer melt days than average occurred along the Davis Strait and the interior melt pond region along the central western coast.

http://nsidc.org/greenland-today/
jawagord
Peat
Peat
 
Posts: 91
Joined: Mon 29 May 2017, 09:49:17

Re: The Greenland Thread

Unread postby dohboi » Sat 09 Jun 2018, 10:52:55

Image
User avatar
dohboi
Harmless Drudge
Harmless Drudge
 
Posts: 17321
Joined: Mon 05 Dec 2005, 03:00:00

Re: The Greenland Thread

Unread postby Plantagenet » Mon 11 Jun 2018, 13:23:01

jawagord wrote: more snow takes longer to melt!...


Of course. But when the climate is warming, the warmer summers are more than capable of melting "more snow."

You can see this by looking at the overall annual "mass balance" of Greenland. You can't just look at one year and you can't just look at winter snow accumulation---you also have to look at summer melting and ablation. And when you add them together, you see that Greenland is rapidly losing mass because of high summer melting. And the rate of mass loss is increasing---i.e. as it gets warmer more and more ice melts each summer and the entire Greenland Ice Sheet shrinks.

Currently Greenland is losing more than 300 Gt of ice each year through melting.

Check it out.

Image
Cheers!
User avatar
Plantagenet
Expert
Expert
 
Posts: 21134
Joined: Mon 09 Apr 2007, 02:00:00
Location: Alaska (its much bigger than Texas).

Re: The Greenland Thread

Unread postby jawagord » Tue 12 Jun 2018, 09:25:04

Plantagenet wrote:
jawagord wrote: more snow takes longer to melt!...


Of course. But when the climate is warming, the warmer summers are more than capable of melting "more snow."

You can see this by looking at the overall annual "mass balance" of Greenland. You can't just look at one year and you can't just look at winter snow accumulation---you also have to look at summer melting and ablation. And when you add them together, you see that Greenland is rapidly losing mass because of high summer melting. And the rate of mass loss is increasing---i.e. as it gets warmer more and more ice melts each summer and the entire Greenland Ice Sheet shrinks.

Currently Greenland is losing more than 300 Gt of ice each year through melting.

Check it out.

Image
Cheers!


Plant I did check it out months ago, see my old posts, at current rates it will take 15,000 years for all the ice to melt. That won’t happen of course as earth will be well into the next glaciation cycle in a few 1000 years and then humans won’t be worrying about melting.
jawagord
Peat
Peat
 
Posts: 91
Joined: Mon 29 May 2017, 09:49:17

Re: The Greenland Thread

Unread postby kanon » Wed 13 Jun 2018, 07:27:59

Plant I did check it out months ago, see my old posts, at current rates it will take 15,000 years for all the ice to melt.

What happens if it rains? What is the possibility of a hurricane moving over Greenland and dropping a lot of liquid water? I suspect the chances of that type event are increasing.
kanon
Lignite
Lignite
 
Posts: 251
Joined: Fri 24 Oct 2014, 08:04:07

Re: The Greenland Thread

Unread postby dohboi » Wed 13 Jun 2018, 08:19:22

Good point, k.

There are good reasons to expect things to go very non-linear in the not-too distant future in Greenland...lots of feedbacks. But for that very reason, rather hard to model.
User avatar
dohboi
Harmless Drudge
Harmless Drudge
 
Posts: 17321
Joined: Mon 05 Dec 2005, 03:00:00

Re: The Greenland Thread

Unread postby kiwichick » Thu 14 Jun 2018, 02:59:29

User avatar
kiwichick
Intermediate Crude
Intermediate Crude
 
Posts: 2239
Joined: Sat 02 Aug 2008, 02:00:00
Location: Southland New Zealand

Re: The Greenland Thread

Unread postby dohboi » Thu 14 Jun 2018, 11:03:33

Yeah, I just saw that and posted it on the Antarctic thread.

There will be more and more 'surprises' like this going forward, that is until the fascists manage to cut off all funding for anymore studies like this, essentially gouging out our eyes just as we are flying into the outskirts of the biggest shitstorm of all time... :twisted:
User avatar
dohboi
Harmless Drudge
Harmless Drudge
 
Posts: 17321
Joined: Mon 05 Dec 2005, 03:00:00

Previous

Return to Environment, Weather & Climate

Who is online

Users browsing this forum: No registered users and 12 guests