Warming air from climate change isn’t the only thing that will speed ice melting near the poles – so will the warming water beneath the ice, a new study points out. Increased melting of ice in Greenland and parts of Antarctica has been reported as a consequence of global warming, potentially raising sea levels. But little attention has been paid to the impact of warmer water beneath the ice. Now, Jianjun Yin of the University of Arizona and colleagues report the warming water could mean polar ice melting faster than had been expected. Their report was published Sunday in the journal Nature Geoscience. While melting floating ice won’t raise sea level, ice flowing into the sea from glaciers often reaches the bottom, and grounded ice melted by warm water around it can produce added water to the sea. “Ocean warming is very important compared to atmospheric warming because water has a much larger heat capacity than air,” Yin explained. “If you put an ice cube in a warm room, it will melt in several hours. But if you put an ice cube in a cup of warm water, it will disappear in just minutes.” In addition, Yin explained, if floating ice along the coastal areas melts it will allow the flow of glaciers to accelerate, bringing more ice into the seas. “This mean that both Greenland and Antarctica are probably going to melt faster than the scientific community previously thought,” co-author Jonathan T. Overpeck said in a statement. Overpeck, co-director of the University of Arizona’s Institute of the Environment, said: “This paper adds to the evidence that we could have sea level rise by the end of this century of around 1 meter and a good deal more in succeeding centuries.” The subsurface ocean along the Greenland coast could warm as much as 3.6 degrees Fahrenheit (2 Celsius) by 2100, the researchers reported. The warming along the coast of Antarctica would be somewhat less, they calculated, at 0.9 degree F (0.5 C).
At least eight people were killed and 72 were missing after the latest downpour to hit Australia’s flood-wracked Queensland state sent raging torrents rushing through several towns, washing away cars and houses.
Rescuers on Tuesday rushed to reach residents trapped on their roofs overnight as the onslaught of muddy water tossed cars like toys, carried away furniture as it washed through stores. Scores of emergency calls were made as the flood swamped Toowoomba, a city of about 90,000 in Queensland state. At least two children were among the dead and Queensland police said the number of people missing had risen to 72.
WARNING: IQ 110+ only. Hi everybody! Welcome to my Blog. On my Web-Magazine you'll find a large variety of topics, from Gay Culture to Politics, Sexuality, Movies, Music, TV, News, Photography, Science, Literature, Religion (from an Atheist point of view), Technology (mostly Apple ), Latino Culture, and more.
I'm a Blogger, an Activist, a College Guy, and a Consultant in Social Responsibility.
I'm also a News Junkie, one of the contributors to the NYT Bestseller "ItGetsBetter" Book, a Cher devotee, a Nutella lover & a Dan Savage & Christopher Hitchens' loyal.
Feel free to re-blog, share and recommend. Enjoy!