A very informative News Blog from World Climate Report. The data on sea level increase is a must for those of you who are worried about the melting ice caps. Slower Sea Level Rise
One of the major pillars of the greenhouse scare is that sea level is rising due to global warming, coastlines will be inundated, and disasters will occur in coastal areas throughout the world. Who could ever forget Al Gore’s documentary showing us the World Trade Center Memorial under water due to sea level rise? A year ago, climate change hero James Hansen warned the world that non-linearities in the ocean-atmosphere system could lead to a whopping 5 meter or more sea level rise over this century.
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As we have covered many times in the past, sea level is certainly rising – of course, it has been rising for the past 10,000 years. During the last glacial period, sea level dropped 400 feet as water was tied up in ice, and as we have moved out of the cold glacial period, sea level has recovered. The question for climate change experts is not “Is sea level rising” but rather “Is sea level rise accelerating?” In 2001, the Intergovernmental Panel on Climate Change (IPCC) wrote “No significant acceleration in the rate of sea level rise during the 20th century has been detected”, while in 2007, IPCC wrote “Global average sea level rose at an average rate of 1.8 [1.3 to 2.3] mm per year over 1961 to 2003. The rate was faster over 1993 to 2003: about 3.1 [2.4 to 3.8] mm per year. Whether the faster rate for 1993 to 2003 reflects decadal variability or an increase in the longer-term trend is unclear.” To say the least, the IPCC has been very cautious on the issue of accelerated sea level rise.
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Slower Sea Level Rise