Which Sea Level Measurement Does The Lack Of Ice Melt Agree With?




Using GRACE, scientists had estimated Antarctic ice mass loss at 190plusminus77 Gt yr.  ( Accelerated Antarctic ice loss from satellite gravity measurements ——J. L. Chen1, C. R. Wilson1,2, D. Blankenship3 & B. D. Tapley1

Now, we understand differently…… During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt/yr (2.5% of input), as derived from ICESat laser measurements of elevation change.  (Mass Gains of the Antarctic Ice Sheet Exceed Losses —–Zwally, H. Jay; Li, Jun; Robbins, John; Saba, Jack L.; Yi, Donghui; Brenner, Anita; Bromwich, David)

So, GRACE missed it by 239 Gt/yr for the Antarctica. 

The question is now, how much did GRACE miss Greenland by?

NOAA had this to say…….  (See top graph)

Greenland mass changes from GRACE (J. Wahr)

GRACE satellite gravity solutions (Velicogna and Wahr 2006) are used to estimate monthly changes in the total mass of the Greenland ice sheet (Fig. HTC19). From the end of April 2010 through the end of April 2011, which roughly corresponds to the period between the beginning of the 2010 and 2011 melt seasons, the ice sheet cumulative loss was -430 Gt, 70% (or 2 standard deviations) larger than the 2003-09 average annual loss rate of -250 Gt y-1. This 2010/2011 mass loss is equivalent to a eustatic sea level rise contribution of 1.1 mm, and is the largest annual loss rate for Greenland in the GRACE record (2002-present), 180 Gt more negative than the 2003-09 average. 2005-2006 had almost as much mass loss as 2010-2011, when evaluated between April/May points. Using GRACE data, Rignot et al. (2011) find an acceleration of Greenland ice sheet mass budget deficit during 1979-2010, in close agreement with an independent mass balance model.

NASA states that Greenland is a large part of the sea level rise….. or rather will be. 



Krabill et al. 2000
-47 Gt/yr
Aircraft Surveys

Velicogna et al. 2006
-200 to –260 Gt/yr

Luthcke et al. 2007*
-145 to –175  Gt/yr

Zwally et al. 2007*
-80 to –100  Gt/yr

In other words, they don’t know jack. 

Okay, let’s say Zwally is right.  Let’s say between Antarctica and Greenland we have a net loss of ~50 Gt/yr of ice.  According to the people proclaiming to know, 360 Gt/year represents an annual sea level rise of 1 mm.  Now recall the Himalayans, according to GRACE isn’t really losing any ice mass, (see  Yes. Yes, They Really Are That Dumb!) so it’s probably gaining as well.  And any other contributions of subtractions would be negligible.  So, the ice melt is leading to…..(being charitable), 1/6th of a mm/yr. 

So, which Envisat measurements agree with the new ICESat measurements? 



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5 Responses to Which Sea Level Measurement Does The Lack Of Ice Melt Agree With?

  1. Just talking about ice melting on the polar caps, because of getting warmer planet in 100y; is advertising the Warmist.

    1] average temp on the polar caps is minus -30C. That’s twice as cold than in your deep freezer / water freezes on ZERO C!

    2] Warmist prefer the sea-level to rise abnormally – for panic /.to get them out of trouble. Reason they are against building new dams. Lake Chad, Caspian sea are drying = that water ends up in the sea. B] new dams introduce EXTRA moisture on the lands = attract extra rain-clouds on lands = more water in lakes, in rivers, in topsoil, in vegetation = LESS WATER IN THE SEA.

    Dams produce cleanest electricity – prevent floods – prevent droughts. the Green People are against dams = against all those benefits; guys, get your teeth into the reality: http://globalwarmingdenier.wordpress.com/2012/09/10/global-temperature/

  2. DirkH says:

    GRACE and Envisat look pretty Clintonesque now.

  3. Keith AB says:

    So once again models are data. These guys are nincompoops.

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