Friday, May 20, 2005

Ice Sheets Growing Due to Warming?

Yes, that is the latest report from Nature, an online science journal.
Increased snowfall over a large area of Antarctica is thickening the ice sheet and slowing the rise in sea level caused by melting ice.

A satellite survey shows that between 1992 and 2003, the East Antarctic ice sheet gained about 45 billion tonnes of ice - enough to reduce the oceans' rise by 0.12 millimetres per year. The ice sheets that cover Antarctica's bedrock are several kilometres thick in places, and contain about 90% of the world's ice. But scientists fear that if they melt in substantial quantities, this will swell the oceans and cause devastation on islands and coastal lands.

The Intergovernmental Panel on Climate Change (IPCC) has reported that sea level is currently rising at about 1.8 millimetres per year, largely through melting of the Greenland and Antarctic ice sheets as a result of global warming. But the panel also expected that climate change would trigger an increase in snowfall over the Antarctic continent, as increased evaporation from the oceans puts more moisture into the air.

My friends, I hope the IPCC didn't spend too much money on their climate model. Even the eight year old Indigent Daughter could tell them that warming increases evaporation into the air where the moisture eventually condenses and falls as rain.

2 Comments:

Blogger Mike said...

Studies like this make me say "gimme a break". How much time, money, and effort was put in to determining the ocean is rising 1.8 millimeters/year? 1.8 millimeters! How do you even measure that? Every time I've ever been to the ocean the waves are crashing. How do you measure down to the millimeter? I suppose their taking their "esitmate" of the polar ice cap meltings and applying it over the earth's surface. But like you said, if the earth is warming up and melting the ice, it is also evaporating more water and raising the relative humidity in the air.
Anyway, let's see. Supposing their right, I'm about 500 ft above sea level, so I figure in about 85,000 years my house will be under water. Could you do me a favor and give me a 15,000 year warning so I can start looking for a new house? But seriously, even if your house is 2 feet above sea level, you have 340 years to start planning the move. If you're building your house any closer to the water than that, guarantee a hurricane or tsunami will wipe it out long before global warming ever will.
And now the poles are gaining ice? That's news to me. I thought they were already melting. I don't suppose these things could be cyclical, could they?

10:50 AM  
Anonymous Dannytoro said...

Tuvalo will sink in 5475 years, you should be ashamed. But this also totally ignores that even if the planet is warming, it's very possible we as the master earth entities, will have no possible effect on it, no matter what we do. And geologic records show this is no first occurence either.

8:25 PM  

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