Record warmth at the top of the Greenland Ice Sheet

By: Dr. Jeff Masters , 9:25 PM GMT on July 18, 2012

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The coldest place in Greenland, and often the entire Northern Hemisphere, is commonly the Summit Station. Located at the top of the Greenland Ice Sheet, 10,551 feet (3216 meters) above sea level, and 415 miles (670 km) north of the Arctic Circle, Summit rarely sees temperatures that rise above the freezing mark. In the 12-year span 2000 - 2011, Summit temperatures rose above freezing only four times, according to weather records researcher Maximiliano Herrera. But remarkably, over the past week, temperatures at Summit have eclipsed the freezing mark on five days, including four days in a row from July 11 - 14. There are actually three weather stations located at the location--Summit, Summit-US, and Summit AWS. The highest reliable temperature measured at any of the three stations is now the 3.6°C (38.5°F) measured on Monday, July 16, 2012 at Summit-US. A 4.4°C reading at Summit in May, 2010 is bogus, as can be seen by looking at the adjacent station. Similarly, a 3.3°C reading from June 2004 is also bad. Records at Summit began in 1987.


Video 1. A 20-ton tractor attempting to repair a bridge washed out by the raging Watson River on July 11, 2012 in Kangerlussauaq, Greenland gets washed downstream. The driver escaped unharmed. Image taken from an article, Warm air over the ice sheet provides great drama in Greenland, at the Danish Meteorological Institute's web site.

Record heat leads to major flooding in Greenland
The record heat has triggered significant melting of Greenland's Ice Sheet. According to the Arctic Sea Ice Blog, on July 11, glacier melt water from the Russell Glacier flooded the Watson River, smashing two bridges connecting the north and south of Kangerlussuaq (Sønder Strømfjord), a small settlement in southwestern Greenland. The flow rate of 3.5 million liters/sec was almost double the previous record flow rate. The latest forecast for Summit calls for cooler conditions over the coming week, with no more above-freezing temperatures at Summit.

Another huge iceberg calves off of Greenland's Petermann Glacier
A massive ice island two times the size of Manhattan and half as thick as the Empire State Building calved off of Greenland's Petermann Glacier on Monday, July 16, 2012. According to Andreas Muenchow, associate professor of physical ocean science and engineering at the University of Delaware's College of Earth, Ocean, and Environment in his Icy Seas blog, the break-off point has been visible for at least 8 years in satellite imagery, and has been propagating at 1 km/year towards Nares Strait. The same glacier calved an iceberg twice as big back on August 4, 2010--the largest iceberg observed in the Arctic since 1962. The freshwater stored in that ice island could have kept the Delaware or Hudson rivers flowing for more than two years, or kept all U.S. public tap water flowing for 120 days. “While the size is not as spectacular as it was in 2010, the fact that it follows so closely to the 2010 event brings the glacier’s terminus to a location where it has not been for at least 150 years,” Muenchow said in a university press release. “Northwest Greenland and northeast Canada are warming more than five times faster than the rest of the world, but the observed warming is not proof that the diminishing ice shelf is caused by this, because air temperatures have little effect on this glacier; ocean temperatures do, and our ocean temperature time series are only five to eight years long — too short to establish a robust warming signal.”


Figure 1. The calving of a massive 46 square-mile iceberg two times the size of Manhattan from Greenland's Petermann Glacier on July 14 - 18, 2012, as seen using MODIS satellite imagery. Image credit: NASA.


Figure 2. Look familiar? Two years ago, a 100 square-mile ice island broke off the Petermann Glacier. It was the largest iceberg in the Arctic since 1962. Image taken by NASA's Aqua satellite on August 21, 2010. Image credit: NASA. I've constructed a 7-frame satellite animation available here that shows the calving and break-up of the Petermann Glacier ice island. The animation begins on August 5, 2010, and ends on September 21, with images spaced about 8 days apart. The images were taken by NASA's Aqua and Terra satellites.

Related posts

Unprecedented May heat in Greenland; update on 2011 Greenland ice melt

Greenland update for 2010: record melting and a massive calving event

Jeff Masters

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1080. Patrap
Member Since: July 3, 2005 Posts: 421 Comments: 127550
Quoting GTcooliebai:
Nice parabola.
Thanks, something can get going over if it wants to.
Member Since: March 16, 2012 Posts: 127 Comments: 7927
Quoting PensacolaDoug:




110 DAYS.
A change I'm hoping for.


One "Neutral" comment on the subject. Suppose the President earns another term. Would you continue your revolt or get behind the President Elect in restoring stability in the nation?
Member Since: Posts: Comments:
1076. Patrap
Portlight.org 2012: The year so far

2012 has been a busy year for us at Portlight, with the renewed commitment from Dr. Jeff Masters and Wunderground.com, the new website, tornados in Illinois, Indiana, Kentucky, Texas and Oklahoma, new partnerships with Team Rubicon, The Mahalia Partnership and the Colorado Cross-Disability Coalition, the Harrisburg House project. So busy, in fact, that we thought we’d take a few minutes and recount some of the things our volunteers have done, with your help:
Member Since: July 3, 2005 Posts: 421 Comments: 127550
Be back when the trolls have subsided to a mere hush in the background. One can dream can't they?
Member Since: Posts: Comments:
1074. Patrap
Er, Im a Independent.


It bothers me not.

Don't let it bother you.








Member Since: July 3, 2005 Posts: 421 Comments: 127550
No Pensacola, you hopefully will get banned for that. People on here are snide at times. You went across that line with what was an insult to military veterans who are liberals. You said they weren't Patriots. Maybe if this is some inside joke with Pat you should PM him, because it certainly didn't come across as such. I believe you meant it just as it came across knowing your political leanings.
Member Since: Posts: Comments:
Quoting wxchaser97:
Nice parabola.
Member Since: August 31, 2009 Posts: 0 Comments: 5628
1071. skook
These are 2 stations from the summit, about 1.2 miles apart and both from July 16.

Link

station 04418

2012-07-16 15:00:00
38.5
2012-07-16 18:00:00
22.6

Link

Station 04416
2012-07-16 15:00:00 28.8
2012-07-16 18:00:00 34.9


So what is considered reliable? I couldn't find the third station which if anyone has a link too would be great.
Member Since: Posts: Comments:
Member Since: March 16, 2012 Posts: 127 Comments: 7927
Quoting Tazmanian:




its you the pacific is not cooling its warming slowy
oh well thanks
Member Since: Posts: Comments:
1067. Patrap
Who is arguing ?

Im LOL my gazoo off.


I have a DD-214




Member Since: July 3, 2005 Posts: 421 Comments: 127550
1064. MrMixon
It's always disappointing when you see a familiar name from the blog resort to blatant trolling.

For the blog's next big disappointment, I present today's monsoonal storms (all one of them) in Colorado...

Member Since: Posts: Comments:
RE;1059 True.


Oddly enough, I never see Tribudude ever chastising BW or Nea or others for "thinly veiled" insults.

Hmmmm...
Member Since: Posts: Comments:
When someone insinuates a VETERAN who is a LIBERAL is not a PATRIOT, then I take it very seriously. Comment 1042 once again, is beneath the level of this blog. Especially from someone who is here regularly.
Member Since: Posts: Comments:
Politics on the blog... yeah, we need to hit the third decade, like NOW...

Member Since: October 25, 2005 Posts: 19 Comments: 21485
1060. Patrap
Somes Ideology is bruised easily.

We understand.

Fresca?
Member Since: July 3, 2005 Posts: 421 Comments: 127550
1058. Patrap
There are now 154 days until the 2012 Winter Solstice.
Member Since: July 3, 2005 Posts: 421 Comments: 127550
Take a deep breath......
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Comments such as Pensacola's are attacking, rude, wrong, and should be ignored, AFTER reporting. Comment 1042
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1055. Patrap
the Moral Majority Im assuming...?

Such Clueless Dogma .

LOL
Member Since: July 3, 2005 Posts: 421 Comments: 127550
Quoting Tribucanes:
Chucktown says he'd have no interest in hearing climate change discussed by his meteorologist if he weren't a meteorologist. And it's "droning" on when a meteorologist discusses climate change. When should we discuss it then Chuck? If main stream media and local media just don't discuss it, then what? Out of sight, out of mind. How cozy for Corporations. It's been packaged to American's as a non-issue, until it is HONESTLY discussed openly as a SOONTOBE real big issue then this will be the public's outlook on it.


Again, my viewers don't care about climate change, its not on the top of their to do list. All they want to hear from me is, is it going to rain, where, what time, and how much. Oh, and if there is something in the tropics, are we going to get hit. That is it, Joe in Goose Creek doesn't care if the world has warmed 1.5 C since 1820 and again if I was on that side of the screen, I wouldn't either. This IS the majority.
Member Since: Posts: Comments:
1053. Patrap
Quoting Tribucanes:
So liberals aren't patriots? I hope everyone reports this very openly insulting and abusive comment by Pensacola Doug.


..we like Doug.

He keeps us Honest.

Honest.

Ask Doug if he served America.

I'm sure he will answer.
Member Since: July 3, 2005 Posts: 421 Comments: 127550
What are the chances that the African wave is given an invest as soon as it enters the Atlantic? Just sayin it looks pretty strong. Hopefully it'll do some sweeping up along the way.
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Quoting windshear1993:
is it me or is the pacific cooling?? what does that mean




its you the pacific is not cooling its warming slowy
Member Since: Posts: Comments:
Quoting Tribucanes:
So liberals aren't patriots? I hope everyone reports this very openly insulting and abusive comment by Pensacola Doug.


If its not true just ignore it.
Member Since: Posts: Comments:
So the US drought is a result of global warming which we are causing. The UK is having one of their wettest summers ever. Trying to figure out how we are responsible for that....
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ittyboo.
Member Since: Posts: Comments:
I'm an independent, but this thinly veiled insult By Pensacola is just beneath this blog.
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1046. Patrap
Quoting PensacolaDoug:




110 DAYS.
A change I'm hoping for.


.."Your so Bain, you probably think this post is about you"....

Dow Close 12875.00 -5.00 (-0.04%)


Dow Jan 20, 2009 Close 7949.
Member Since: July 3, 2005 Posts: 421 Comments: 127550
So liberals aren't patriots? I hope everyone reports this very openly insulting and abusive comment by Pensacola Doug.
Member Since: Posts: Comments:
1044. ncstorm
Quoting BobWallace:


Geeeus, squeezeus! Those are Rasmussen polls you use. Come on. His polls are designed to give the right-wing talking points. They only get somewhat accurate just before election so that he doesn't look like a complete liar.

Here's Gallup. Pretty much considered to be the most objective of all the polling operations -

"The 42% of adults worldwide who see global warming as a threat to themselves and their families in 2010 hasn't budged in the last few years...."

Link



hate to disappoint you Bob, but I have been voting as a democrat since the day I turned 18..I guess being in a certain party has nothing to do with what Americans are concern about..but hey, I dont want to plague the blog with non weather talk as I hear we are not supposed to do that..
Member Since: Posts: Comments:
Quoting nofailsafe:
One question I've had for a while that I would really like to hear some answers for is:

What can we as a society do about our changing climate?

and:

What are YOU doing to contribute less to climate change?

Share your thoughts.

Have you decided what really about the climate is changing? The causative factor, agent? Because it helps to in treating the disease to know the cause, not just the symptoms.
Member Since: Posts: Comments:
1040. Patrap
“Politicians and diapers must be changed often, and for the same reason.”
― Mark Twain
Member Since: July 3, 2005 Posts: 421 Comments: 127550
Chucktown says he'd have no interest in hearing climate change discussed by his meteorologist if he weren't a meteorologist. And it's "droning" on when a meteorologist discusses climate change. When should we discuss it then Chuck? If main stream media and local media just don't discuss it, then what? Out of sight, out of mind. How cozy for Corporations. It's been packaged to American's as a non-issue, until it is HONESTLY discussed openly as a SOONTOBE real big issue then this will be the public's outlook on it.
Member Since: Posts: Comments:
Miami NWS Discussion

THE SAHARAN AIR (DUST) LAYER WILL BE EXITING SOUTH FLORIDA ON
FRIDAY ALLOWING FOR SOME DEEPER MOISTURE TO WORK INTO THE CWA FROM
THE ATLANTIC WATERS AHEAD OF A TROPICAL WAVE LOCATED OVER EASTERN
CARIBBEAN SEA. THIS WILL ALLOW FOR A FEW SHOWERS AND THUNDERSTORMS
FRIDAY AFTERNOON OVER THE CWA WITH THE BEST CHANCE OVER THE
WESTERN PORTIONS OF THE CWA. SO WILL CONTINUE THE 10 TO 20 PERCENT
CHANCE OF POPS FOR FRIDAY AFTERNOON OVER SOUTH FLORIDA.

THE DEEPER TROPICAL MOISTURE WILL CONTINUE TO INCREASE OVER SOUTH
FLORIDA THIS WEEKEND...AS THE TROPICAL WAVE CONTINUES TO MOVE WEST
NORTHWEST AND THROUGH SOUTH FLORIDA LATE THIS WEEKEND. SO WILL
CONTINUE THE SLIGHT CHANCE TO CHANCE POPS ON SATURDAY WITH CHANCE
POPS ON SUNDAY.
Member Since: Posts: Comments:
One question I've had for a while that I would really like to hear some answers for is:

What can we as a society do about our changing climate?

and:

What are YOU doing to contribute less to climate change?

Share your thoughts.
Member Since: Posts: Comments:
is it me or is the pacific cooling?? what does that mean
Member Since: Posts: Comments:
Quoting BobWallace:


Are these guys getting a college degree before someone lets them on the air?

What kind of university would graduate a meteorologist who didn't understand basic physics?

(I do realize that some of them are just weather-readers.)


No weather reader here, no prompter needed - fully accredited Bachelor of Science in Meteorology.
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Quoting Patrap:
Its a good buy and solid investment too.

From Our News Center
Air Products’ LNG Expertise Selected for PETR...
APD - NYSE $81.50 -0.04 19 July 2012 4:07 PM

So instead of a lemonade stand, let's just hook up and create a cloud stand there on the Sabine. We'll have a 100-ft aluminum cone to send clouds this or that way, depending on who pays how much for it to go this or that way. Ground cloud-seeding.
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Quoting ScottLincoln:


If he does, he might already be on the Forecast the Facts list. There are some really interesting ones on there - they run the whole span of skeptical opinions from flat out denial that CO2 is a greenhouse gas to denial that greenhouse gases cause warming to the more simple skepticism that greenhouse gases from humans are causing the majority of the observed changes.


Are these guys getting a college degree before someone lets them on the air?

What kind of university would graduate a meteorologist who didn't understand basic physics?

(I do realize that some of them are just weather-readers.)
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1030. ncstorm
updated HPC Precip map

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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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