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Satellite altimetry data showing rate of sea level rise  (Source: University of Colorado, Boulder)
World's oceans rise slower since 2005, fail to display predicted accelerating trend.

Satellite altimetry data indicates that the rate at which the world's oceans are rising has slowed significantly since 2005. Before the decrease, sea level had been rising by more than 3mm/year, which corresponds to an increase of about one foot per century. Since 2005, however, the rate has been closer to 2mm/year.

The decrease is significant as global climate models predict sea level rise to accelerate as atmospheric CO2 continues to increase. In the 1990s, when such acceleration appeared to be occurring, some scientists pointed to it as confirmation the models were operating correctly.

Sea level rise was calculated from altimetry data from the TOPEX/Poseidon and Jason-1 satellite missions, published by the University of Colorado, Boulder.

Dr. James Choe, a research associate with the University of Colorado, says the decrease is temporary. "Interannual variations often cause the rate to rise or fall", he says. Choe believes an accelerating trend will reappear within the next few years. Oceanographer Gary Mitchum of the University of South Florida, says making any judgement from the limited data available is "statistically so uncertain as to be meaningless".

Others disagree. Dr. Vincent Gray, a New Zealand based climatologist and expert reviewer for the IPCC, believes that the accelerated trends seen earlier were simply an artifact of poor measurements. "The satellite system has undoubtedly shown a rise since 1992, but it has leveled off", he tells DailyTech. "They had some bad calibration errors at the beginning."

Gray points to a study done by Flanders University using tide gauges which, he says, measured no perceptible increase in sea level over its entire 15 year period.

Sea level has been rising since the end of the last ice age, some 20,000 years ago. During an episode known as "Meltwater Pulse 1A", the world's oceans rose by more than 5 meters per century, a rate about 20 times faster than the current increase.

TOPEX/Poseidon was launched by NASA in 1992, and collected data until 2005. In 2001, NASA and France's Centre National d'Études Spatiales (CNES) launched its follow-up mission, Jason-1.

Jason-2 was launched in June of this year.



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RE: Sea level
By masher2 (blog) on 12/15/2008 10:10:48 PM , Rating: 2
> "So, bringing that logic forward..."

If you're using the word "logic" to compare the US halting steel sales to Japan to a terrorist nuking of a major population center, then you fail to understand what the word means.

No one can make excuses for Japanese foreign policy in the 1930s/40s. They were not "justified" in attacking Pearl Harbor, the Rape of Nanking, their treatment of prisoners and civilians, their horrific medical experiments, or in any of the other terrible acts they committed during the period.

I personally know people whose lives were *saved* by the dropping of the atomic bomb....people whose entire families died in Japanese POW camps, and who they themselves only survived by the early end of the war the bomb brought about.

Had the bomb not been used, not only would those people have died, but hundreds of thousands of US troops and millions -- perhaps tens of millions -- of Japanese civilians as well. There very well may not have been a surviving nation at all, at least not as a distinct cultural group. Take a look at the *conventional* bombing statistics prior to Hiroshima. Most major cities and dozens of smaller ones were partially or entirely razed already...and the Japanese will to fight on remained untouched. Hell, even after Nagasaki, the Japanese still very nearly didn't surrender.

Most cultural anthropologists credit the amazing, near-overnight transformation of Japanese society from the militaristic hegemony into the current peaceful, free, democratic society on one thing -- their defeat by the United States in WW2. Being proud of the US defeat of Japan isn't "my country, right or wrong". It's basic ethics, and simple common sense.


"What would I do? I'd shut it down and give the money back to the shareholders." -- Michael Dell, after being asked what to do with Apple Computer in 1997














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