I wasn't aware Greenland was regaining mass, in fact I read something recently about the margins undergoing far more melting than was expected (hmm, it appears I didn't save that link - always the way!)
Which brings up an interesting point about the dynamics of large ice caps. Gaining mass in the centre of an ice field is not necessarily a sign of health if the margins are melting rapidly - there will then be a giant imbalance and the glacier will start to accelerate towards the margins. Relatively then, the glacier will melt faster.
I'm not so sure how Greenland is divided up, but at least for Antarctica the ice caps doesn't behave as one entity. There are various 'ice divides' making several distinct sections. The two that have probably received the most attention are the Antarctic Peninsula and the West Antarctic Ice Sheet (WAIS). The Antarctic Peninsula has shown the most signs of rapid degradation so far - who can forget the calving off and breaking up of Larsen B in just 30 days? But, the vast melting there doesn't increase sea level because most of it is floating ice shelves - floating ice doesn't add volume as it melts. Same as the sea ice in the North, it's disappearance is disastrous for polar bears etc that survive on it, but doesn't change sea level. The real worry comes form the apparent signs of instability the WAIS is showing - if it were to collapse a la Larsen B, sea level would rise, as most of this volume presently lies on the land.
Huh, I learnt more in my glaciology class than I thought...
That hockey stick graph thing was interesting, but it doesn't mean there aren't 100 other legitimate graphs that show the same thing. And yes, it odes go on on both sides - I think I was trying to say more that in my experience there is a greater volume of peer-reviewed, 'good' science on the climate change side. (What's the opposite of 'denier'? 'affirmer'?
) Note that none of the data these guys were sending Caspar were published.
I don't think these guys were trying to make Caspar sign anything, just enjoying the thrill of trying to convince a guy who makes the IPCC models...
The more worrying thing was the case of another woman on our table, who had found her name as having 'signed' one of these things - but did not authorise that in any way! Something she had said was taken completely out of context and quoted as supporting their cause. Disgusting.