'Gravity is climate'? WTF?!

From the Helmholtz Association of German Research Centres  evidence that maybe, just maybe, climate has become a singularity unto its own, and everything now in the physical world is “climate”. Or…they’ve jumped the shark. The headline of this press release  is mind-blowingly stupid.

‘Gravity is climate’ – 10 years of climate research satellites GRACE

How much ice is Greenland is really losing? – Movement in the Earth’s mantle? – Enough water for all?

For the first time, the melting of glaciers in Greenland could now be measured with high accuracy from space. Just in time for the tenth anniversary of the twin satellites GRACE (Gravity Recovery and Climate Experiment) a sharp image has surface, which also renders the spatial distribution of the glacial melt more precisely. The Greenland ice shield had to cope with up to 240 gigatons of mass loss between 2002 and 2011. This corresponds to a sea level rise of about 0.7 mm per year.

The "climate" looks a bit lumpy today - The earth's gravity field (vertically enhanced) Image from GFZ

These statements were made possible by the high-precision measurements of the GRACE mission, whose data records result in a hitherto unequaled accurate picture of the earth’s gravity.

One of Newton’s laws states that the gravity of an object depends directly on its mass. “When the mass of the Greenland ice sheet changes, so does the gravity there,” explains Dr. Frank Flechtner from the GFZ German Research Centre for Geosciences. “The GRACE gravity field measurements therefore give us information on mass changes, including climate-related ones.”

But there’s more. The uneven distribution of mass on and within the planet causes, due the resulting variability of gravity, the earth to have an irregular shape, which deviates significantly from sphericity. Known as the “Potsdam Gravity Potato, the geoid has achieved global notoriety. But this potato shape is equally subject to temporal changes. During the last Ice Age, a mile-thick ice sheet covered North America and Scandinavia. Since the ice melted, the crust, now liberated from its load, continues to rise to this day. This causes material flow in the earth’s interior, in the mantle, to replenish. With GRACE, this glacial-isostatic adjustment can for the first time be accurately detected globally as a change in the geoid height: the ice ages continue to have an effect, which is especially evident in North America and Scandinavia.

Anniversary in space

On 17 March 2012, the two GRACE twin satellites will have been in orbit for exactly 10 years. The scientists named them “Tom and Jerry”, because they chase each other on exactly the same orbit around the earth. Since their launch from the Russian cosmodrome in Plesetsk, the two satellites have circled the Earth more than 55 000 times on a near polar orbit at about 450 to 500 km altitude and a distance of 220 km, and continuously collected data.

GRACE is a joint project of the U.S. space agency NASA and the German Aerospace Center (DLR). The mission was planned in 1996 by the GFZ German Research Centre for Geosciences, the University of Texas Center for Space Research (UTCSR) and the Jet Propulsion Laboratory in Pasadena, and in 1997 was selected to be the second mission in NASA’s program Earth System Science Pathfinder (ESSP). The scientific analysis of the data is carried out jointly by GFZ, UTCSR and JPL. Principal Investigator of the mission is Prof. Byron Tapley (UTSCR), Co-Principal Investigator is Dr. Frank Flechtner (GFZ). Especially noteworthy: with GRACE, NASA for the first time commissioned a non-American company to build satellites. Astrium in Friedrichshafen, who built the GFZ’s founding father satellite CHAMP (Challenging Mini-satellite Payload), produced the satellite duo GRACE for NASA.

A hair’s breadth: gravity field measurements with satellite

The primary scientific goal of the GRACE satellite mission is to measure the gravitational field of the earth and its changes over time on a global scale with unprecedented accuracy. If the earth were a homogeneous sphere, the two satellites would orbit at exact elliptical orbits around the Earth. But the uneven distribution of mass causes perturbations in the trajectory. “Their analysis allows us to derive the irregular structure of the Earth’s gravity,” explains Dr. Frank Flechtner. “This, however, requires the satellites’ orbits to be measured with high precision. Each of the two GRACE satellites is therefore equipped with a GPS receiver for positioning, an accelerometer to correct for disturbing forces due to the residual atmosphere and solar radiation, and two star trackers to determine the satellites’ position in space.” But the core is the ultra-precise distance measurement system developed by NASA / JPL, which allows the separartion of the two satellites to be continuously measured with a precision of one tenth of a hair’s breadth.

From the varying distance between the two satellites, GFZ scientists can determine the gravitational field of the earth. Approximately every 30 days, the satellite pair has collected enough data for a complete global map. This monthly survey of gravity is at least 100 times more accurate than any previous model, and thus invaluable for the research at the GFZ and the international user community. “Many processes in the climate of our planet are accompanied by large-scale water mass redistributions, which are made visible in the gravitational field,” adds Flechtner. This enabled, as the name of the mission suggests, the first observation and analysis of homogeneous and globally numerous climate-related processes from the monthly gravity field models over the last 10 years. Particularly worth mentioning are

  • The mass balance study of the continental water content, which is ultimately a sum of precipitation, evaporation, runoff and storage. GRACE monitors the season-dependent changes in the major river basins, but also the huge groundwater extraction due to irrigation in northern India and California.
  • Quantification of the increase or decrease of the ice and snow masses in the polar or large glacier areas. GFZ scientists were able to demonstrate a strong correlation between the climatic phenomenon ENSO / La Nina, the rainfall patterns in West Antarctica and the reduction of ice mass there.
  • The observation of surface and deep currents, which – in combination with the sea surface topography derived from satellite altimetry – brought about a much better understanding of the global ocean circulation and thus the heat transport from the equator toward the poles.
  • The first-time possibility of separation of mass (ice melt) or temperature (global warming) induced sea level changes.
  • The changes in the solid earth after large earthquakes, such as Sumatra-Andaman (2004), Chile (2010) and Fukushima (2011).

New potatoes and improved weather forecast

The ‘Potsdam Gravity Potato’, originally developed in 1995, is now much more precise thanks to GRACE. This is not a gimmick, but is required, for example, to improve the trajectories of geodetic satellites and derive accurate global reference systems from them – a prerequisite for the combination and evaluation of various global sensor systems such as the Global Positioning System (GPS), Satellite Laser Ranging (SLR), the satellite altimetry or local gauge measurements such as for the observation of sea level rise. Another scientific objective of the GRACE mission is to derive about 150 globally distributed vertical temperature and water vapor profiles from GPS data on a daily basis. These data reach the GFZ via its own receiving station in Ny Ålesund (Spitsbergen) and are delivered to the global weather centers within 2 hours to improve global forecasts. In addition, these data are used for studies of climate induced changes in the earth’s atmosphere.

A scientific birthday gift

Right from the beginning, GRACE was planned to be an international program. “For the 10th Birthday, the researchers have devised a special gift for the more than 3,000 users”, says Professor Reinhard Huettl, Chair of the Board of the GFZ. “The entire mission was recalculated with improved correction models, instrument data and processing standards.” Initial analyzes show that the accuracy of gravity field models could be further improved by a factor of 2. These new models will be released to the global users on 17 March via the Information System and Data Centre (ISDC) of the GFZ.

Like its predecessor mission CHAMP (Challenging Mini-Satellite Payload), GRACE will on 17 March be running for twice as long as originally planned. An end of the mission is, however, still in sight. Therefore, the GFZ have initiated a follow-up mission together with the U.S. colleagues. Professor Hüttl is confident: “We hope that at Christmas 2016 two GRACE-FO (follow-on) satellites will orbit around the Earth, because only long time series can provide reliable information on global trends in climate.”

###

Images in printable resolution can be found here:

http://www.gfz-potsdam.de/portal/gfz/Public+Relations/M40-Bildarchiv/Bildergalerie_Satelliten/04+Bildergalerie+GRACE

http://www.gfz-potsdam.de/portal/gfz/Public+Relations/M40-Bildarchiv/Bildergalerie_Kartoffel

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I can’t find the story on their site; I’d bet, however, it made more sense in German.
REPLY: Yeah I was thinking that too, but this is Eurekalert. You’d think they’d check it – Anthony

etudiant

Actually a superb achievement, the mission is wonderful science.
The more egregious comments reflect the normal rent seeking behavior common to federally funded scientists, it is considered good form to have your project produce conclusions consistent with the national policy of the day.
As long as the raw data is not adjusted out of recognition and then discarded, there will be useful results eventually.

Dave Wendt

“When the mass of the Greenland ice sheet changes, so does the gravity there,” explains Dr. Frank Flechtner from the GFZ German Research Centre for Geosciences. “The GRACE gravity field measurements therefore give us information on mass changes, including climate-related ones.”
When the mass of the ice sheet changes the gravity changes, but does that necessarily guarantee that when GRACE measures a change in gravity it is necessarily measuring a change in ice sheet mass?

ImranCan

“This corresponds to a sea level rise of about 0.7 mm per year.”
This is what is really vapid …. exactly what HASN’T been observed …. by anyone or anything actually measuring sea level.
Jeez.

ImranCan

Actually take that back … I mis-read 0.7mm as 7mm….. whoops.

JPY

Once more you reveal your complete ignorance of what is going on, and how scientists are working that out. Changes in gravity are indeed telling us about the climate changes – in Greenland, Antarctica, Alaska and elsewhere.
Indeed, only last month you were lauding a study based on GRACE that showed minimal net losses in the Himalayas.
So what is it to be? excellent tool for assessing trends in ice and water movements, or those crazy scientists jumping sharks? Or are we simply seeing knee jerk reactions to whatever gets into your RSS feed?

Yes, “ein Orbitalschwerpunktkartoffelverarbeitendenmaschine” is a useful device.

GeologyJim

Gravity is absolutely the ideal parameter for post-rational scienc-ey types to measure and interpret.
First, it’s quantifiable (Hey, man, it’s DATA) and it can be measured with meaningless precision
Second, the interpreters can sound soooo important by saying “It’s, like, one of the Fundamental Laws of Nature, man! It’s the Physics”
Third, changes in gravitational attraction can be caused by myriad things (any change in mass distribution), none of which is unique nor uniquely verifiable. The interpretation depends ENTIRELY on data reduction and MODELING.
So GRACE data can be used to conclude ANYTHING
Perfect. GRACE can probably detect butterfly wing-beats and forecast the effects around the globe.

Nice article. Couple of ‘typos’:

How much ice is Greenland is really losing? ”
Is is ?

For the first time, the melting of glaciers in Greenland could now be measured with high accuracy from space. Just in time for the tenth anniversary of the twin satellites GRACE (Gravity Recovery and Climate Experiment) a sharp image has surface, which ”
Perhaps “surfaced“?

gallopingcamel

When you look at the “Cryosphere” section of the IPCC’s draft AR5 documents due for publication if 2013 you will find several studies of the rate of ice loss world wide. Even with the help of the GRACE, the measurements cover a broad range of values.
For argument’s sake let me suppose that the highest number is correct, in which case the ice is melting at a rate of 285 Gt/year. That sounds like a really scary number until you put it in context. The current “Ice Inventory” for the planet averages ~3 million Gt. If the present rate of loss continues we could be rid of all permanent ice cover in 10,000 years.
While much of the science in the WG1 drafts is first rate, the summary completely fails to put things in context leaving the door open for alarmist interpretations being delivered in the “Summary for Policy Makers”.
Those who would pick our pockets want the money now rather than in a thousand years so they exaggerate the dangers by orders of magnitude.

Hector Pascal

The changes in the solid earth after large earthquakes, such as Sumatra-Andaman (2004), Chile (2010) and Fukushima (2011).
Thay’ll need to improve their accuracy a little. The 2011 earthquake was off Miyagi, not Fukushima. That’s about 100km lateral error. Don’t give up the day job, boys.

@JPW:
Oh please. “Gravity is Climate” is a jump the shark headline or just lousy copy that’s sensationalized. “Gravity can inform some small bits about climate variation” is a true statement.
Or maybe you want to discuss “what is is”…

pat

O/T but here goes. plenty of critical quotes :
16 March: Post Crescent/USA Today: AP: Susan Montoya Bryan: NM regulators scrap carbon emissions rules
New Mexico regulators pulled the plug Friday on the state’s effort to reduce greenhouse gas emissions among coal-fired power plants, refineries and other large polluters.
The Environmental Improvement Board adopted a repeal petition filed last year by utilities and industry groups that were concerned about rising costs and New Mexico’s economic viability.
The vote marks the second time in two months that the board has undone regulations passed in the waning weeks of former Democratic Gov. Bill Richardson’s administration that were aimed at curbing carbon emissions…
The board found that the regulations were not justified, that they violated New Mexico law because they were more stringent than what the federal government requires and that the state’s adoption of federal permitting rules had actually triggered a sunset clause related to the greenhouse gas emissions regulations.
Environmentalists said the federal permitting rules, which have been placed on hold by the Obama administration, won’t do enough to curb emissions.
Last month, the Environmental Improvement Board also scraped rules that would have cleared the way for New Mexico to participate in a regional cap and trade program…
http://www.postcrescent.com/usatoday/article/38820927?odyssey=mod%7Cnewswell%7Ctext%7CFRONTPAGE%7Cp

Dave Wendt

That nice lumpy graphic of the Earth’s gravity field illustrates very well the futility of all our lengthy arguments about millimeter scale variations in GMSL. If you look at a map of the Geoid, which represents the surface of the world’s oceans with everything except gravity variations excluded
http://en.wikipedia.org/wiki/File:Geoid_height_red_blue_averagebw.png
you will note that the difference in “absolute” surface height between that blue spot in the Indian Ocean basin and the big bulge north of Australia is almost 200 meters just across that relatively short span of the globe. ( I put quotes around absolute since it is fundamentally impossible to know the ocean height in that way because no baseline reference for it exists). In reality the seas are never level and any changes to their volume, whether from steric changes or from volume added by melting ice, will never be reflected uniformly across the planet.

u.k.(us)

“On 17 March 2012, the two GRACE twin satellites will have been in orbit for exactly 10 years.”
========================
Mark Twain –
– There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact.
———-
Some more:
– Always do right. This will gratify some people and astonish the rest.
– When we remember we are all mad, the mysteries disappear and life stands explained.

lol, yes such precision…. let’s see….. ice melt measured by Grace….. there was a study just published which used Grace to measure the Himalayan glacier melt…… precisely showed a mass loss of only 4 ± 20 Gt yr−1…… let’s not start pretending they can measure sea-level to 1/10ths of a mm. That precision is derived by “fun with numbers.”.

pat

making it up as they go along, as usual:
17 March: Stuff New Zealand: Forestry carbon trading in limbo
Some foresters are reported to have sold their credits for a lucrative sum.
But at the moment, things are in limbo.
Carbon prices have plummeted, due partly to the global downturn and to cheap credits from overseas driving down the local price…
However, with the carbon price falling from $21 in April last year to less than $8 today, the trading scheme has all but ground to a halt.
David Rhodes says that needs addressing.
***”We will be hoping they … will alter the rules sufficiently where we end up in a situation where the carbon price is not as volatile as it has been and investors have a much more secure basis for deciding whether they’re going to get in,” he said…
http://www.stuff.co.nz/business/industries/6590067/Forestry-carbon-trading-in-limbo

Christian Bultmann

So with the currant rate of mass loss in a bit less than 120 thousand years it’s all gone.
We better start moving to higher ground immediately.

pat

the pressure is starting to pay off. don’t back down:
15 March: Reuters: UPDATE 2-UN aviation body hit by carbon emissions dispute
* Working group to evaluate options, report in June
* To consider role of developing countries
* Under pressure to find alternative to EU scheme
The news came as sources said China was suspending the purchase of 10 more Airbus jets, escalating a trade row over airline emissions.
In a decision obtained by Reuters, the council instructed a working group to continue its study of “market-based measures” to deal with aviation emissions and report back at the next council meeting, scheduled for June.
It also asked the working group to evaluate whether the measures being studied can “accommodate the special circumstances and respective capabilities of developing countries”.
The official said a large majority of the council voted for the decision, including China, Russia, the United States, and the European members…
A coalition of more than 20 countries, including China, Russia and the United States, has been organized to oppose the EU scheme, arguing the plan infringes on their sovereignty…
The European Commission has said it was forced to act alone after ICAO failed to come up with a viable plan. It said it will modify its law if the ICAO comes up with an acceptable alternative.
(Additional reporting by Barbara Lewis in Brussels; Editing by Janet Guttsman and Peter Galloway)
http://www.reuters.com/article/2012/03/15/airlines-emissions-idUSL2E8EF1Y320120315

This reminds me of Luboš Motl’s blog post showing why sea level in Iceland would drop if Greenland ice melted.
http://motls.blogspot.ca/2010/06/if-greenland-melted-sea-level-in.html

Dave Wendt

gallopingcamel says:
March 16, 2012 at 8:13 pm
“The current “Ice Inventory” for the planet averages ~3 million Gt.”
I believe that number is a serious underestimate. By my admittedly rough calculation there is over 20 million Gts in the Antarctic icecap alone. Approx 15mil km2 land area X 90% ice cap coverage X 1.7 km average depth = 20+km3 of ice. As I recall 1km3 = 1Gt.

DavidCobb

Look into the Isostatic adjustment (glacial rebound). Smith et al used GPS mounted on bare rock to calculate the adjustment but was rejected because it showed an increase in the ice, (more gained in the center than lost on the rim). Velegona (sp?) et al used a modeled isostatic ajustment to come up with the politicly correct answer. The funny part is, they used data from the precipitation models in thier model.

if this is true, Greenland must have an enormous Schwanzstuker!

Greg House

Gravity changes can not prove ice melting, because there are gravity changes also in places, where there is no ice and nothing has changed on the surface.

I have said this before – GRACE can only detect mass changes, not the source of the mass change. There is no, repeat ‘no’, way for anyone tie changes in the Earth’s gravity field to melting ice.
Take it for the NASA Systems Engineer with a quarter of a century of experience. GRACE only knows something between the center of the Earth and it’s orbit altitude changed. Nothing more.

E.M.Smith says:
March 16, 2012 at 8:22 pm
> Oh please. “Gravity is Climate” is a jump the shark headline or just lousy copy that’s sensationalized.
Gravity is what you expect, weather is what you get?
🙂

Dave Wendt

On a somewhat elated note this piece published a couple days ago
http://www.nature.com/nature/journal/vaop/ncurrent/full/nature10891.html#/ref
Collapse of polar ice sheets during the stage 11 interglacial
suggests that the supposed 20 meter change in sea level 400,000 years ago, based on sea level artifacts on Bermuda and the Bahamas which are supposedly tectonically stable, may be off by as much as 10 meters because the islands actually subsided that amount due to the isostatic rebound resulting from the retreat of the North American ice sheet. In case you find that as confusing as I first did, the theory, as I understand it, is that the depression of the mantle caused as the ice sheet built caused the mantle under the islands to bulge upward. When the ice retreated and the mantle rebounded, the bulge subsided accordingly. The thing is paywalled of course, but here’s the abstract.
“Contentious observations of Pleistocene shoreline features on the tectonically stable islands of Bermuda and the Bahamas have suggested that sea level about 400,000 years ago was more than 20 metres higher than it is today1, 2, 3, 4. Geochronologic and geomorphic evidence indicates that these features formed during interglacial marine isotope stage (MIS) 11, an unusually long interval of warmth during the ice age1, 2, 3, 4. Previous work has advanced two divergent hypotheses for these shoreline features: first, significant melting of the East Antarctic Ice Sheet, in addition to the collapse of the West Antarctic Ice Sheet and the Greenland Ice Sheet1, 2, 3; or second, emplacement by a mega-tsunami during MIS 11 (ref. 4, 5). Here we show that the elevations of these features are corrected downwards by ~10 metres when we account for post-glacial crustal subsidence of these sites over the course of the anomalously long interglacial. On the basis of this correction, we estimate that eustatic sea level rose to ~6–13 m above the present-day value in the second half of MIS 11. This suggests that both the Greenland Ice Sheet and the West Antarctic Ice Sheet collapsed during the protracted warm period while changes in the volume of the East Antarctic Ice Sheet were relatively minor, thereby resolving the long-standing controversy over the stability of the East Antarctic Ice Sheet during MIS 11.”

Ted G

pat says:
March 16, 2012 at 8:23 pm
O/T but here goes. plenty of critical quotes :
16 March: Post Crescent/USA Today: AP: Susan Montoya Bryan: NM regulators scrap carbon emissions rules
New Mexico regulators pulled the plug Friday on the state’s effort to reduce greenhouse gas emissions among coal-fired power plants, refineries and other large polluters.
Pat thanks for this and the other news on carbon trading collapse/Ponzi scams, they are good and welcome news against the insanity of the warmist fraudsters.

Greg House

Another thing about the alleged ice melting is this. Has anybody seen water flowing from the Greenland ice sheet? I do not think so.
You know, ice can not melt without turning into water.

Jeff D

Just a thought. When the ice melts we get a rebound effect on the crust. This rebound is filled in with magma under the crust changing the density / mass in that general area. Seems to me that calculating the loss of ice mass vs the increase of mass do to magma would be very hard to calculate. This will help with their budget ( the add climate to the header effect ) but I hope they continue to do the real work in gravity pretty slick stuff.

“JPY says:
March 16, 2012 at 7:58 pm

So what is it to be?”
It is to be the use of language that seeks accurately to reflect reality.
You are building a fine strawman. But if you are not, then you are incapable of identifying the the inherent linguistic error in the title of the article. To say that ‘gravity is climate’ is about as ridiculous as someone claiming ‘my fist is your face’ when you get punched in the nose.

Dave Wendt

Erratum
Should of course be “on a somewhat related note” although I must admit to at least a chuckle, if not real elation, when another piece of the “settled science” is brought under suspicion.

Mac the Knife

Just one question: Is gravity ‘Green’?
Happy St. Patrick;s Day, YAll!
Another Killians Red is about to experience a tipping point….
MtK

Greg House says: March 16, 2012 at 9:37 pm
You know, ice can not melt without turning into water.
——-
It can sublimate:
http://wattsupwiththat.com/2012/01/20/told-ya-so-al-gore-kilimanjaro-alarmist-hype/

Theo Goodwin

gallopingcamel says:
March 16, 2012 at 8:13 pm
Splendid comment. The hype given to anything that can be interpreted as supporting AGW buries the real science in rubbish. Grace is so hyped you would think that the authors have confused the twins with LeBron James.

Theo Goodwin

wws says:
March 16, 2012 at 9:07 pm
LOL! If only Mel Brooks could be president.

Tom_R

Jeff D says:
March 16, 2012 at 9:38 pm
Just a thought. When the ice melts we get a rebound effect on the crust. This rebound is filled in with magma under the crust changing the density / mass in that general area. Seems to me that calculating the loss of ice mass vs the increase of mass do to magma would be very hard to calculate. This will help with their budget ( the add climate to the header effect ) but I hope they continue to do the real work in gravity pretty slick stuff.

Interesting thought. Maybe the converse is also true and additional ice presses the crust further down, decreasing the amount of liquid rock below and lowering the local gravity. Maybe lower gravity = more ice.

I remember well that GRACE results have been downgraded to half.

Greg House

garymount says:
March 16, 2012 at 9:47 pm
It can sublimate
———————————————–
Yes, it can, below 0. Now, given no one has seen water flowing from the ice sheet and, let’s say, there is less ice there (because of sublimation), we have to come to the conclusion, that there have been fewer days with temperatures above 0, which indicates COOLING.
Climate science is a funny thing, isn’t it?

John F. Hultquist

More explicitly put, the sun’s not yellow. It’s a chicken.

Tim Minchin

analyzes should be analyses (in this context)

Greg House

John F. Hultquist says:
March 16, 2012 at 11:06 pm
————————————————–
John, in the article the words “glacier” and “ice sheet” are used interchangeably, although they are different things. Not good science.
Second, you know, generally ice does melt under circumstances, above 0. This mere fact however is not enough to suspect the ice sheet of Greenland to be melting away. This is not science. This is exactly like finding a place in Greenland where the are more ice now and say, the ice sheet is growing.
Given the huge amount of ice allegedly melted away from the ice sheet, one should at least ask himself: what has happened whis this huge amount of meltwater, where is it, all of it? And demand a PROOF. That picture in the article is not an answer.

The larger the glacier, the longer it takes to come into equilibrium with any change in the climate. The Greenland glaciers (icesheet) will take centuries to come into equilibrium with the warming since the LIA.
While 240 gigatons sounds impressive, it tells us nothing of interest concerning AGW. What matters is the rate of change.
There is a slight increase in the rate of melting in the short GRACE record, but that in itself is not evidence of AGW.
The Greenland icesheet is particularly sensitive to changes in solar insolation, because it is relatively close to the Equator (compared to Arctic sea ice and Antarctic ice).
Increasing solar insolation would melt south facing glaciers while having little effect on north facing glaciers.
No one has explicitly compared north and south facing glacier melt in Greenland, but this study of regional changes in Greenland icesheet melt, strongly indicates the melt is overwhelmingly in south facing glaciers. GHG warming could not cause this differential melting and solar insolation increases (caused by aerosol and cloud changes) are the only possible cause.
http://www.the-cryosphere-discuss.net/5/C1670/2012/tcd-5-C1670-2012-supplement.pdf

J.H.

Was that “Climate Gravity field”….. Or “Climate Gravy train”….? 😉

Not particularly new, I wrote an article (gravity-temperature related) two and half years ago.
http://www.vukcevic.talktalk.net/NATA.htm

Kelvin Vaughan

gallopingcamel says:
March 16, 2012 at 8:13 pm
If the present rate of loss continues we could be rid of all permanent ice cover in 10,000 years.
Or …. http://wattsupwiththat.com/2012/03/16/the-end-holocene-or-how-to-make-out-like-a-madoff-climate-change-insurer/

Kelvin Vaughan

howardtlewisiiii says:
March 16, 2012 at 11:07 pm
More explicitly put, the sun’s not yellow. It’s a chicken
We will be ok for chicken and chips then.

Willis covered the matter of the measurement of the Greenland ice melt by Grace satellites here
http://wattsupwiththat.com/2010/05/23/on-being-the-wrong-size/
He also explained what PROPORTION of the total ice-cap was melting – infinitesimal, actually

son of mulder

it’s amazing that the jetstream ever manages to work out where to flow. Butterflies flap their wings but is a slight change in shape of a gravity potato a positive or negative feedback or able to flip climatic Lorenz attractors?