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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1430. beell
Good Morning, ST2K.
Houston Intercontinental Airport (KIAH)
Partly Cloudy
79°F
26°C
Humidity 88%
Wind Speed W 5 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index 83°F (28°C)
Last Update on 20 Jul 6:53 am CDT

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Some models are hinting at possible all-time record high temperatures across the Mississippi Valley next week. Stay tuned for details...

In the meantime, I saw someone earlier commenting that a model is showing a swirl off the Florida coast--in two weeks. I think I'll hold off on boarding up just yet... ;-)
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1428. Patrap
New Orleans
NEXRAD Radar

Base Reflectivity 0.50° Elevation
Range 248 NMI

Member Since: July 3, 2005 Posts: 426 Comments: 129093
1427. ARiot
Quoting PensacolaDoug:This country will not come together anytime sonn. Too few people pulling the cart for far too many. Far too many people willing to let the gov "take" care of them. It's a paltry amount but some people settle too easily. I've worked all of my life. I believe if people are too comfortable in their poverty it saps their motivation to better themselves.


That's the most absurd thing I've read today, but it's early. It'll be hard to beat though.

Let's talk about the weather. I've got rain that was sorely needed. Trees are happy. Garden is happy. I'm happy. Here's to more rain for those who need it!



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Quoting GeorgiaStormz:


no hogans heroes?


I grew up on Hogan's Heros, Gilligans Island, and Star Trek.............Compare that to what is on television now. Case Closed........ :)
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1425. LargoFl
Member Since: August 6, 2011 Posts: 4 Comments: 41000
1424. LargoFl
................................looks like its going to be an active storm day in the midlantic states
Member Since: August 6, 2011 Posts: 4 Comments: 41000
Quoting weathermanwannabe:
I have two girls (ages 11 and 20) and while one is in college we never took our eyes off of them, they have not been allowed to watch/listen any inappropriate television or other media, and my oldest just finished her 2nd year at Yale. I try to stay on topic on here but will say this, the decline in American society over the last 20 years is correlated to the media blitz of "reality" TV which essentially glorifies disfunctional people on TV every day. No wonder our young generation, and a few older folks, have so little respect for people these days. It's all about turning it around for our kids and setting better examples for them; if you have children, turn off the television or keep it on PBS and other educational/history channels.

Socrates: "Anyone who has contemplated history has understood that the fate of empires depends upon the education of their youth"


no hogans heroes?
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I have two girls (ages 11 and 20) and while one is in college we never took our eyes off of them, they have not been allowed to watch/listen any inappropriate television or other media, and my oldest just finished her 2nd year at Yale. I try to stay on topic on here but will say this, the decline in American society over the last 20 years is correlated to the media blitz of "reality" TV which essentially glorifies disfunctional people on TV every day. No wonder our young generation, and a few older folks, have so little respect for people these days. It's all about turning it around for our kids and setting better examples for them; if you have children, turn off the television or keep it on PBS and other educational/history channels.

Socrates: "Anyone who has contemplated history has understood that the fate of empires depends upon the education of their youth"
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Quoting Jax82:


It's really easy, i just put them on ignore, and the blog then goes back to normal :) It is a tragedy what happened, and my prayers go out to those affected by it.


Hey buddy did you get any rain yesterday as it looked like a very strong line of storms rolled thru Jax yesterday?
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Quoting beell:


In what could be a much bigger and far more important story than another mass murder in Colorado...I'll ask THE question...

Got some details, Pat?


Hey good morning beell!
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1418. HadesGodWyvern (Mod)
The active low pressure east of Tuguegarao city has developed into a tropical depression and was named "Ferdie". It is now moving towards extreme northern Luzon

At 4:00 PM PhST, Tropical Depression Ferdie located at 18.4°N 123.0°E or 130 km east of Aparri, Cagayan has 10 minute sustained winds of 30 knots. The depression is reported as moving west northwest at 7 knots.

Signal Warnings
=================

Signal Warning #1

Luzon Region
--------------

1. Isabela
2. Cagayan Including Calayan
3. Babuyan Group of Island
4. Batanes Group of Island
5. Kalinga
6. Apayao
7. Abra
8. Ilocos
9. Norte
10. Ilocos Sur
11. Mt. Province

Additional Information
=======================

Residents living in low lying and mountainous areas under public storm warning signal #1 are alerted against possible flashfloods and landslides.

Estimated rainfall amount is from 10–25 mm per hour (heavy to intense) within the 400 km diameter of the tropical depression.

Tropical Depression “Ferdie” is expected to enhance the southwest monsoon that will bring rains over southern Luzon, Visayas and Mindanao especially the western section.

Fishing boats and other small seacrafts are advised not to venture out into the Seaboards of central and southern Luzon due to the combined effect of Tropical Depression “Ferdie” and the southwest monsoon.

The public and the disaster coordinating councils concerned are advised to take appropriate actions and watch for the next bulletin to be issued at 11 PM today.
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1417. Patrap

Yup...plenty.

been listening to the Aurora Scanners,

On the other, No comment
Member Since: July 3, 2005 Posts: 426 Comments: 129093
Quoting Patrap:

What are you guys going to do when this entry dosen't allow comments come the 25th?



Maybe start practicing writing and developing your own.


That's how real bloggers do it.


wait it wont allow comments on the 25th?
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1415. beell
Quoting Patrap:

What are you guys going to do when this entry dosen't allow comments come the 25th?



Maybe start practicing writing and developing your own.


That's how real bloggers do it.


In what could be a much bigger and far more important story than another mass murder in Colorado...I'll ask THE question...

Got some details, Pat?
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1414. Patrap
WunderBlogAdmin

WunderBlogAdmin is a generic handle used by the employees to interact with bloggers. This gives a single point of contact for our members to report issues and dispute bans.


As noted in our terms of service, Weather Underground does not maintain 24/7 watch over the blogs and administration is not real time.

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Member Since: July 3, 2005 Posts: 426 Comments: 129093
The youngest victim is now confirmed at 3 months old. Sad!!!
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Good Morning as I am listening to Song Remains the Same by Zep at the moment........ :)

The Atlantic will awaken again sometime in August but I am pretty amazed at all the activity in the Pacific Basin...........Not surprised given the El Nino effects on that end; a small one or two degree temp anomaly towards the warmer end of the scale can make a huge difference in the tropical cyclone world if the other synoptic conditions are favorable.
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1410. Patrap
California sunlight, sweet Calcutta rain
Honolulu starbright - the song remains the same.

Member Since: July 3, 2005 Posts: 426 Comments: 129093
1409. ncstorm
I am going to log off for a while because I might say something that wont be acceptable for some folks on this blog but I do want to leave you with this..as a parent, I would never make another insensitive remark about another parent who just lost their child..I just hope you never have to experience the sick horror of what an individual does and you then be brought up on a pedestal and judge..
Member Since: August 19, 2006 Posts: 13 Comments: 16041
Quoting hurricane23:
This is just so sad...everytime i see things like this i honestly fear for my 15 month year daugther and what awaits her in this very scary world of ours. My thoughts and prayers go out to those envolved.


Mine too. My daughter is a month old today.
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This is just so sad...everytime i see things like this i honestly fear for my 15 month year old daugther and what awaits her in this very scary world of ours. My thoughts and prayers go out to those envolved.
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Quoting Patrap:

What are you guys going to do when this entry dosen't allow comments come the 25th?



Maybe start practicing writing and developing your own.


That's how real bloggers do it.



It's good we have you to show us the way Pat.
Member Since: July 25, 2006 Posts: 0 Comments: 591
I wonder if this country will ever put there political backgrounds aside to come together as one when tragedies of this magnitude happen



This country will not come together anytime sonn. Too few people pulling the cart for far too many. Far too many people willing to let the gov "take" care of them. It's a paltry amount but some people settle too easily. I've worked all of my life. I believe if people are too comfortable in their poverty it saps their motivation to better themselves.
Member Since: July 25, 2006 Posts: 0 Comments: 591
My brief two cents is I feel upset at all the care-givers of all minor-age kids dragged to all the midnight showings last night. Their care-givers have more need for a Batman film than giving their kids sleep and rest and stability.
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1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
110 NM EITHER SIDE OF A LINE FROM 17.9N 124.6E TO 19.7N 119.9E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 18 TO 23 KNOTS. METSAT IMAGERY
AT 200600Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 18.0N
124.3E. THE SYSTEM IS MOVING WEST-NORTHWESTWARD AT 08 KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 17.8N
125.3E IS NOW LOCATED NEAR 18.0N 124.3E, APPROXIMATELY 280 NM
NORTHEAST OF MANILA, PHILIPPINES. RECENT ANIMATED MULTISPECTRAL
SATELLITE IMAGERY SHOWS A PARTIALLY-EXPOSED LOW-LEVEL CIRCULATION
CENTER (LLCC) EAST OF NORTHERN LUZON. STRONG LOW-LEVEL CONVERGENT
FLOW IS FUELING CONVECTIVE DEVELOPMENT ALONG THE SOUTHWESTERN
PERIPHERY OF THE LLCC. THIS DISTURBANCE IS SITUATED IN AN AREA OF
SUBSIDENCE AND MODERATE VERTICAL WIND SHEAR INDUCED BY AN UPPER-
LEVEL LOW SUPERIMPOSED OVER THE LLCC. OVER THE NEXT 24 HOURS, THIS
UPPER-LEVEL LOW IS EXPECTED TO FILL AND THE LLCC IS FORECAST TO
MOVE WEST-NORTHWESTWARD INTO AN AREA OF LOWER VERTICAL WIND SHEAR
AND IMPROVED OUTFLOW ALOFT. THE NUMERICAL MODELS CONTINUE TO
INDICATE SLOW CONSOLIDATION OVER THE NEXT 24 HOURS, FOLLOWED BY A
PERIOD OF MORE RAPID DEVELOPMENT AS UPPER-LEVEL CONDITIONS IMPROVE.

MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23 KNOTS.
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. BASED
ON THE PRESENCE OF A WELL-DEVELOPED LLCC AND ANTICIPATED IMPROVEMENT
IN THE UPPER-LEVEL ENVIRONMENT, THE POTENTIAL FOR THE DEVELOPMENT OF
A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS HIGH.

Member Since: February 11, 2012 Posts: 84 Comments: 7948
1402. Patrap
Member Since: July 3, 2005 Posts: 426 Comments: 129093
1401. Patrap

What are you guys going to do when this entry dosen't allow comments come the 25th?



Maybe start practicing writing and developing your own.


That's how real bloggers do it.
Member Since: July 3, 2005 Posts: 426 Comments: 129093
Quoting Patrap:


I dont watch it for the News, I watch it to note the Idiocy there.











The same reason I read the posts on this site.
Member Since: July 25, 2006 Posts: 0 Comments: 591
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1398. Patrap




Member Since: July 3, 2005 Posts: 426 Comments: 129093
Quoting MAweatherboy1:

Yeah I saw that... I trust the 0z and 12z runs much more than the 6z and 18z runs though so maybe it'll be there again at 12z.


The 0Z run had a mischief in the GULF.

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As always there a lot of conflicting stories and confusion in the immediate aftermath of these types of events. First reports are often inaccurate.

Too much speculation.
Member Since: July 25, 2006 Posts: 0 Comments: 591
I wonder if this country will ever put there political backgrounds aside to come together as one when tragedies of this magnitude happen. It's just sad that people bring up a political debate when many kids as young as 6 got shot to death at the hands of a 24yr person.
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Quoting Tropicsweatherpr:


Nothing on the 06z about what 00z had in GOM.

Yeah I saw that... I trust the 0z and 12z runs much more than the 6z and 18z runs though so maybe it'll be there again at 12z.
Member Since: February 11, 2012 Posts: 84 Comments: 7948
1393. Patrap
Member Since: July 3, 2005 Posts: 426 Comments: 129093
Quoting MAweatherboy1:

It looks like towards early to mid August we may try to get into at least more of a neutral MJO phase, but by then it's possible to get development without the MJO.


Nothing on the 06z about what 00z had in GOM.
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AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 17N44W 13N46W 9N47W.
AN UPPER LEVEL TROUGH IS ALONG 21N37W 15N46W 10N50W 8N57W.
BROKEN TO OVERCAST MULTILAYERED CLOUDS AND POSSIBLE
RAINSHOWERS ARE FROM 10N TO 20N BETWEEN 35W AND 60W.

A CARIBBEAN SEA TROPICAL WAVE IS ALONG 20N70W 16N68W 12N66W...
FROM THE EASTERN DOMINICAN REPUBLIC TOWARD ISLA LA ORCHILA OF
VENEZUELA. SCATTERED MODERATE TO ISOLATED STRONG CONVECTIVE
PRECIPITATION IS WITHIN A 30 TO 60 NM RADIUS OF 15N69W. ISOLATED
MODERATE CONVECTIVE PRECIPITATION IS ELSEWHERE FROM 15N TO 17N
BETWEEN 70W AND 73W.

THE SOUTHWESTERN GULF OF MEXICO TROPICAL WAVE FROM SIX HOURS AGO
HAS BEEN REPOSITIONED TO BE IN THE EASTERN PACIFIC OCEAN...AND
THEN DROPPED FROM THE ANALYSIS...AS IT MOVED ACROSS MEXICO.
SCATTERED MODERATE TO ISOLATED STRONG CONVECTIVE PRECIPITATION
LINGERS IN THE SOUTHWESTERN CORNER OF THE GULF OF MEXICO TO THE
SOUTH OF 20N BETWEEN 94W AND COASTAL MEXICO. SCATTERED TO
NUMEROUS STRONG CONVECTIVE PRECIPITATION IS IN MEXICO FROM 17N
TO 19N BETWEEN 100W AND 101W. MORE SCATTERED MODERATE TO
ISOLATED STRONG CONVECTIVE PRECIPITATION IS IN THE EASTERN
PACIFIC OCEAN FROM 6N TO 17N BETWEEN 100W AND 104W.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH COASTAL SENEGAL NEAR
14N17W...10N27W AND 10N35W. THE ITCZ CONTINUES FROM 10N35W
TO 6N47W. CONVECTIVE PRECIPITATION...STRONG FROM 9N TO 12N
BETWEEN AFRICA AND 19W...SCATTERED MODERATE TO ISOLATED STRONG
IS ELSEWHERE FROM 7N TO 13N BETWEEN AFRICA AND 26W...ISOLATED
TO WIDELY SCATTERED MODERATE TO LOCALLY STRONG TO THE SOUTH OF
10N BETWEEN 50W AND 60W.
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1390. Patrap

U betcha.


: )





Member Since: July 3, 2005 Posts: 426 Comments: 129093
YES
Quoting StormTracker2K:


It's this tropical wave coming up from the SE Bahamas.
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Hey Pat:

"When using Dr. Masters' blog, please refrain from posting material not relevant to the discussion of tropical weather, or the topic of the blog entry itself. Please do not engage in personal attacks or bickering. Material not conforming to these standards should be flagged with the button and ignored."
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1387. Patrap
Quoting StormTracker2K:


Well I don't watch FOX just for those reasons. That's the last place I would get my news from. Get your coffee and relax brother.


I dont watch it for the News, I watch it to note the Idiocy there.







Member Since: July 3, 2005 Posts: 426 Comments: 129093
Quoting LargoFl:
..if you listened to Lush Limbaugh a few days ago, he spent hours railing against that movie, guess someone took him seriously



That is not true. He didn't rail against the movie at all. He did talk about it, but not in the way you describe. I feel so sorry for the people involved in this tragedy. My 17 year old son went to a midnite premeire in Pensacola, I'm thankful it did not happen here.
Member Since: July 25, 2006 Posts: 0 Comments: 591
Quoting StormTracker2K:
When is the MJO ever going to come back to our side of the world.



SOI index is still in the positive range for the 13th day now.
Link

It looks like towards early to mid August we may try to get into at least more of a neutral MJO phase, but by then it's possible to get development without the MJO.
Member Since: February 11, 2012 Posts: 84 Comments: 7948
Quoting StormTracker2K:
When is the MJO ever going to come back to our side of the world.



SOI index is still in the positive range for the 13th day now.
Link


it will drop in a while, after the high passes tahiti.
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Quoting Patrap:


Well, I've been watching FOX since it broke as I got a call.

They went from a Possible Black suspect, to a Latino one, for the Scanner name being tossed around, then when a White Male was identified as the shooter, now they calling it, a "Crazy" person.

Yeah, I know the drill.


Well I don't watch FOX just for those reasons. That's the last place I would get my news from. Get your coffee and relax brother.
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When is the MJO ever going to come back to our side of the world.



SOI index is still in the positive range for the 13th day now.
Link
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1380. barbamz
Cinema shooting:
12.18 University Hospital confirms that a three-month-old baby was injured.

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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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