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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Jeff Masters Blog In Spanish

El lugar más frío en Groenlandia, y con frecuencia todo el hemisferio norte, es común la estación de montaña. Situado en la parte superior de la capa de hielo de Groenlandia, 10,552 pies (3207 metros) sobre el nivel del mar y 415 millas (670 km) al norte del Círculo Polar Ártico, las temperaturas rara vez ve la Cumbre que se elevan por encima del punto de congelación. En el lapso de 12 años 2000 - 2011, la Cumbre de las temperaturas subieron por encima de cero sólo cuatro veces, de acuerdo al clima registros investigador de Maximiliano Herrera. Pero sorprendentemente, en la última semana, las temperaturas en la Cumbre han eclipsado el punto de congelación durante cinco días, incluyendo cuatro días en una fila de 11 de julio - 14. En realidad, hay tres estaciones meteorológicas ubicadas en el lugar - la Cumbre, la Cumbre Estados Unidos-, y AWS Cumbre. La temperatura más alta medida fiable en cualquiera de las tres estaciones es ahora el 3,6 ° C (38,5 ° F), medido en Lunes, 16 de julio 2012 en la Cumbre y los Estados Unidos. Un 4,4 ° C en la Cumbre de la lectura en mayo de 2010 es falso, como se puede ver mirando a la estación adyacente. Del mismo modo, una lectura de 3,3 ° C entre junio de 2004 también es malo. Registros en la Cumbre se inició en 1996.

El récord de calor ha provocado la fusión significativa de la capa de hielo de Groenlandia. Según el blog de hielo del mar Ártico, el 11 de julio, los glaciares el agua de deshielo del glaciar Russell Watson inundó el río, rompiendo dos puentes que conectan el norte y el sur de Kangerlussuaq (Sønder Strømfjord), un pequeño asentamiento en el sudoeste de Groenlandia. El caudal de 3,5 millones de litros por segundo fue casi el doble del anterior récord de flujo tarifa.El pronóstico más reciente de las llamadas Cumbres de las condiciones más frías durante la próxima semana, con temperaturas no más por encima de la congelación en la Cumbre.

Una isla de hielo masiva dos veces el tamaño de Manhattan y la mitad del grosor del Empire State Building parido fuera de Petermann de Groenlandia Glaciar en Lunes, 16 de julio 2012. De acuerdo con Andreas Muenchow, profesor asociado de ciencias del mar física y la ingeniería en la Universidad de la universidad de Delaware de la Tierra, Océano y Medio Ambiente en su blog mares helados, el punto de quiebre-off ha sido visible durante al menos 8 años en imágenes de satélite, y se ha estado propagando a 1 km / año hacia el Estrecho de Nares. El mismo glaciar parido un témpano de hielo el doble de trasero grande el 4 de agosto de 2010 - el mayor iceberg observado en el Ártico desde 1962.El agua dulce almacenada en esa isla de hielo podría haber mantenido los ríos Delaware o Hudson fluye por más de dos años, o se mantiene todo el público de EE.UU. el agua del grifo que fluye por 120 días. "Mientras que el tamaño no es tan espectacular como lo fue en 2010, el hecho de que sigue tan de cerca a la edición de 2010 trae terminal del glaciar a un lugar donde no ha sido por lo menos 150 años", dijo Muenchow en una editorial universitaria en libertad. "El noroeste de Groenlandia y Canadá, el noreste se están calentando más de cinco veces más rápido que el resto del mundo, pero el calentamiento observado no es prueba de que la disminución de la capa de hielo es causado por esto, porque la temperatura del aire tienen poco efecto sobre el glaciar, la temperatura del océano hacen , y nuestra temperatura del océano de series de tiempo son sólo cinco a ocho años de largo - demasiado breve para establecer una señal de calentamiento robusto ".


Jeff Masters

Translated by PRweather

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1129. JLPR2
Quoting washingtonian115:
I knew the username started with a J and had a 2 in it.Lol.


Ha! Close enough. XD
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Quoting JLPR2:


Dude you forgot me so soon? Your memory is worst than mine... XD
I knew the username started with a J and had a 2 in it.Lol.
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Whole Lotta Shaking Going On

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1125. JLPR2
Quoting washingtonian115:
Someone posted a model run of it going out 1000 hours and showing a active August.Lol.


Dude you forgot me so soon? Your memory is worst than mine... XD
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Quoting washingtonian115:
Someone posted a model run of it going out 1000+ hours and showing a active August.Lol.
Don't worry the GFS will soon specialize in long range modeling.
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Quoting GTcooliebai:
Oh yeah we're in business at the start of the month.

Experimental FIM Model from NOAA's Earth System Research Laboratory:

If dry air is still a problem...
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Quoting nofailsafe:


The surest thing I can say is that climate change is that it is a change in atmospheric composition, solar irradiance, surface albedo, and net entropy. What those factors will result in are up in the air (quite literally.) The thing we have the most direct control over is atmospheric composition. Think about CFCs for a second, those are a good example. We put them up there, they ate away at the ozone layer and now, after cutting back, our ozone layer is somewhat better than it was in the mid 1980s and atmospheric concentrations of all CFCs are down 10%.

Anyway, that's all I've got.

Thank you for a very lucid and thoughtful analysis.

Your argument I would classify as emissions-based observations. But over time, much bigger emissions - The Dust Bowl, Krakatoa, in recent history; the GOM asteroid, and countless pre-historic emission catastrophies have still swung back to equilibrium with a time of the event.

My argument is that if there is very recent change in climate, it is not emissions-based, but change in the water-cycle due to the availability over land of water that used to be cycling over that land but no longer is. The anomalies over landmass originate in ground and troposphere water or lack of it; the symptoms show us where the changes are coming from.
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1121. JLPR2
Quoting TropicalAnalystwx13:
Tropical Cyclone activity during the past ten years as of 7/19/11: (Sorry for the long post):

2000:

* Tropical Depression One
* Tropical Depression Two

2001:

* Tropical Storm Allison
* Tropical Depression Two

2002:

* Tropical Storm Arthur

2003:

* Tropical Storm Ana
* Tropical Depression Two
* Tropical Storm Bill
* Hurricane Claudette
* Hurricane Danny
* Tropical Depression Six

2004:

* No tropical cyclones recorded as of 7/19/04

2005:

* Tropical Storm Arlene
* Tropical Storm Bret
* Hurricane Cindy
* Hurricane Dennis
* Hurricane Emily

2006:

* Tropical Storm Alberto
* Tropical Storm Unnamed
* Tropical Storm Beryl

2007:

* Subtropical Storm Andrea
* Tropical Storm Barry

2008:

* Tropical Storm Arthur
* Hurricane Bertha
* Tropical Storm Cristobal

2009:

* Tropical Depression One

2010:

* Hurricane Alex
* Tropical Depression Two

2011:

* Tropical Storm Arlene
* Tropical Storm Bret


This quote is a year old but it still works. Also to note, TS Cindy formed a day later on the 20th for 2011.

And to add:
2012:

* Tropical Storm Alberto
* Tropical Storm Beryl
* Hurricane Chris
* Tropical Storm Debby
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Well Everyone have a safe and quiet evening and I'll see Yall tomorrow......... :)
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Oh yeah we're in business at the start of the month.

Experimental FIM Model from NOAA's Earth System Research Laboratory:

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Member Since: September 30, 2007 Posts: 9 Comments: 15749
1117. ncstorm
Quoting washingtonian115:
Someone posted a model run of it going out 1000+ hours and showing a active August.Lol.


1000 hours?..incredible!
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1116. Patrap
LOL

Timing is everything.


GOP senators block top Obama jobs initiative - CNN.com
www.cnn.com


Senate Republicans on Thursday blocked the No.1 item on the president's congressional "to-do-list," refusing to allow a vote on a bill that would give tax breaks for companies that "insource" jobs to the U.S. from overseas while eliminating tax deductions for companies that move jobs abroad.
Member Since: July 3, 2005 Posts: 414 Comments: 125552
Quoting GTcooliebai:
The Climate Forecast System
Someone posted a model run of it going out 1000+ hours and showing a active August.Lol.
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1102. Same feeling here.....
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Quoting ncstorm:


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..


How you vote is none of my business. Posting junk, that I take an interest in.

Now, how do you separate weather from climate?

And are you complaining when people start talking about their dating lives, how things are going for them at work/school, all that non-weather/climate stuff?



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1112. Patrap
Quoting weathermanwannabe:


Yes my old friend, we will know soon enough but I will stick it out to the end....This has been like family to me over the last 6 years starting with Dr. M and tons of other folks over the years (some whom no longer blog on here) who were more interested in teaching than arguing............. Oh Well....... :)



Indeed,

Change is a constant in linear time and within the Matterium,


Tomorrow will be a new Chance to make something WUnderful.


"If you cannot help, at least harm not the ones doing the chore"

Closing time
Every new beginning comes from some other beginning's end

Member Since: July 3, 2005 Posts: 414 Comments: 125552
Quoting washingtonian115:
What model was that?
The Climate Forecast System
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1110. ncstorm
JMA model

72 hours


96 hours


120 hour


144 hours
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Quoting Patrap:
Well, soon we shall know, come the 25th and the TWC link kicks in, comments may not be allowed here for a spell.


Yes my old friend, we will know soon enough but I will stick it out to the end....This has been like family to me over the last 6 years starting with Dr. M and tons of other folks over the years (some whom no longer blog on here) who were more interested in teaching than arguing............. Oh Well....... :)
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Quoting GTcooliebai:
Guess what the model I just show, shows future Ernesto recurving out to sea.
What model was that?
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Quoting BahaHurican:
I keep watching 2 things about these current AEWs, to wit:

- lovely high position already as they exit the great continent of birth and

- strictly Wward track impacting CAR basin and GoM basin landmasses, due to strength / extent / position of surface ridging.

Gradually other ATL basin-wide conditions that are unconducive will abate; TUTT / ULL interference will decrease, westerly shear will lessen. Even the strength of the high, which has helped to fuel high-speed tranversals of the MDR for Twaves and kept SAL high, will moderate over the next 7-21 days.

However, I'm still waiting to see if we're going to get that mean trough positioned along the E CONUS coast to provide the groove for the resultant bowling balls to run down....

Guess what the model I just show, shows future Ernesto recurving out to sea.
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Hey, wxman... pple have been praying for an invest...
Member Since: October 25, 2005 Posts: 19 Comments: 20688
1105. Patrap
Well, soon we shall know, come the 25th when the TWC link kicks in, comments may not be allowed here for a spell.
Member Since: July 3, 2005 Posts: 414 Comments: 125552
Quoting 954FtLCane:


you sure have a way of talking down to peeps tonight....just sayin.. thats all
Yeah i know.I'm sorry that I have to say this and I'm not normally the one to shout it out.but after he attacked me aggressively I had to well you know..
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I keep watching 2 things about these current AEWs, to wit:

- lovely high position already as they exit the great continent of birth and

- strictly Wward track impacting CAR basin and GoM basin landmasses, due to strength / extent / position of surface ridging.

Gradually other ATL basin-wide conditions that are unconducive will abate; TUTT / ULL interference will decrease, westerly shear will lessen. Even the strength of the high, which has helped to fuel high-speed tranversals of the MDR for Twaves and kept SAL high, will moderate over the next 7-21 days.

However, I'm still waiting to see if we're going to get that mean trough positioned along the E CONUS coast to provide the groove for the resultant bowling balls to run down....

Member Since: October 25, 2005 Posts: 19 Comments: 20688
I come on here to chat and learn about the weather with other enthusiasts in order to try and forget about the overall lack of civility we are seeing in society in general but it's been getting harder lately to find an hour long fight/insult free discussion......My ignore list has grown over the past several months as a result (particularly when you see folks who just joined a few months, or a few days ago, who immediately start jumping on and arguing with folks) but I am trying to hang in there. They really need to consider making this a paid blog to thin out the ranks to those who will stay on topic IMHO.
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Member Since: July 21, 2011 Posts: 82 Comments: 7056
System around Cape Verde Islands at 396 hrs. according to the CFS long range model. That would be Aug. 2nd.

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1099. MrMixon
Seems like somebody is trying to get a 24-hour ban. But wouldn't turning off the computer be easier?

"Well the landslide will bring you down..."

Awesome video of some very lucky folks barely (and I mean BARELY) escaping a recent landslide in British Columbia:

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The only mention of the convection ready to emerge Africa came at the 8 PM EDT discussion.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS ACROSS W AFRICA TO THE COAST OF
GUINEA-BISSAU AT 13N16W CONTINUING ALONG 14N30W TO 9N49W. THE
ITCZ BEGINS AT 9N49W CONTINUING TO 9N61W. NO DEEP CONVECTION IS
ALONG THE AXIS...BUT A LARGE BURST OF CONVECTION IS NEARING THE
AFRICAN COASTLINE.
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Quoting PensacolaDoug:



I fear for how BO will change our country once he doesn't have to sweat re-election.


"The People" always have the power to change at any time. I am personally curious what could happen if all worked together, despite their beliefs. My philosophy is "Do The Best You Can With What You Have". I do not think a portion of the US population is doing that right now.
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Member Since: July 21, 2011 Posts: 82 Comments: 7056
Quoting redwagon:

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.


Well, for starters we know that the burning of fossil fuels releases carbon oxides (monoxide and dioxide.) We also know that carbon dioxide has two very strong absorbances in the IR part of the electromagnetic spectrum. Energy from the sun is absorbed by all gases in the atmosphere. It really doesn't help that there's more CO2 in the atmosphere today than there was even 10 years ago. If one denies that the effects of fossil fuel combustion do not release carbon dioxide into the atmosphere then they must answer the question: where is it going?

Some of it is incorporated into new growth from autotrophs but that only occurs at a certain rate. If you exceed the rate of fixing the CO2 has to find some place else to go. It either ends up getting absorbed by the oceans or it lingers in the atmosphere. Carbon dioxide also only has a certain solubility in water. I.E. the oceans can only hold so much.

There are also other contributing greenhouse gases such as methane and water. Water can hold a lot more energy than air can (it has a significantly higher specific heat.) Water also has two very strong IR absorptions. Methane does as well. So when you have permafrost melting in areas that have large accumulations of soil bacteria that produce methane gas as a byproduct of their metabolism, you can release some of that into the atmosphere.

Now, there are a lot of factors that influence the climate, the composition of the gases in the atmosphere are definitely a big player, but there are also other factors that influence it. For instance, where does all of the soot from incomplete burning of carbon-based fuel go? Carbon, if you've ever seen it, is pretty much black. Black things are black because they're absorbing all of the light in the visible spectrum. Some of that absorbed energy gets released in the form of heat.

To answer your question about what climate change entails:

The surest thing I can say is that climate change is that it is a change in atmospheric composition, solar irradiance, surface albedo, and net entropy. What those factors will result in are up in the air (quite literally.) The thing we have the most direct control over is atmospheric composition. Think about CFCs for a second, those are a good example. We put them up there, they ate away at the ozone layer and now, after cutting back, our ozone layer is somewhat better than it was in the mid 1980s and atmospheric concentrations of all CFCs are down 10%.

Anyway, that's all I've got.
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1093. Patrap




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1090. Patrap
Quoting 954FtLCane:




This blog has gone off the edge tonight.

BTW, What are the chances the African wave will get an invest # when it enters the ATL?


Usually the NHC waits to see if the TW can sustain its signature as it makes the trek westward, a few days.

How they look exiting and what we see a few days after tells a lot as to a waves voracity and chance to develop.

Member Since: July 3, 2005 Posts: 414 Comments: 125552
Quoting 954FtLCane:
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.
Doubt it. Given current conditions, which are pretty much standard re: climatology at this period, the earliest I can see them giving this invest status is T+24 hrs...

Member Since: October 25, 2005 Posts: 19 Comments: 20688
1088. Patrap


Member Since: July 3, 2005 Posts: 414 Comments: 125552




This blog has gone over the edge tonight.

BTW, What are the chances the African wave will get an invest # when it enters the ATL?
Member Since: September 30, 2008 Posts: 0 Comments: 108
Quoting PensacolaDoug:



Just for the record. You're a goober. That wasn't directed at Pat. Just a general statement that I saw on a t-shirt and thought was funny. You're still a goober tho.

Get ya handbags out and start swingin. lol

The Barometer Bob Show this week July 19, 2012
This week my special guest is Bryan Norcross from The Weather Channel. We will talk about the 2012 Hurricane Season and the 20th anniversary of Hurricane Andrew.
Also, we will talk with John Van Pelt from StormStudy.Com about something very interesting!
You can watch the show live beginning at 8PM/7C at HurricaneHollow.Com Join us in Storm Chat and feel free to call into the show.
Member Since: September 30, 2007 Posts: 9 Comments: 15749
Lord, please send us an invest and stop this insanity.
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Quoting ProgressivePulse:


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?



I fear for how BO will change our country once he doesn't have to sweat re-election.
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Member Since: March 16, 2012 Posts: 123 Comments: 7886
Quoting jrweatherman:
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....
They are getting our rain. Maybe they stole it?

Member Since: October 25, 2005 Posts: 19 Comments: 20688
Line of storms coming my way again.. haha i cant get a break but i guess its good cause we need the rain... wish i culd send it to other areas that need it more at the moment tho :p
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1080. Patrap
Member Since: July 3, 2005 Posts: 414 Comments: 125552

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About JeffMasters

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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