Back to 1979 Levels for Sea Ice

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Back to 1979 levels for sea ice, according to a report in Daily Tech, 1 Jan 2009. Since 1979 scientists have been observing the changes in sea ice in the Arctic and Antarctic regions using satellite images. With each seasonal cycle millions of square kilometres of this ice melt and reform, but the scientists use a calculation named the “mean ice anomaly” to follow the overall trend. This is the “seasonally-adjusted difference between the current value and the average from 1979-2000”. At the end of 2008 the anomaly was just under zero, i.e. the sea ice was about the same as it was in 1979. The University of Illinois's Arctic Climate Research Center has produced a graph of the global sea ice area and the sea ice anomaly for 1979-2008 showing the anomaly has risen and fallen many times over the 29 years of records. The latest rapid increase in ice defied recent predictions that the Arctic sea ice would soon completely melt. Bill Chapman, a researcher with the UIUC's Arctic Center, told DailyTech the increased ice was due to colder temperatures and weaker winds. Strong winds inhibit ice formation and can move the ice into warmer waters where it melts. According to the National Snow and Ice Data Center, sea ice has less snow on it and is less insulated from freezing air. Daily Tech also reminds us of another aspect of the changing sea ice: “In May, concerns over disappearing sea ice led the U.S. to officially list the polar bear a threatened species, over objections from experts who claimed the animal's numbers were increasing.” One of the Daily Tech readers commented: “Well, now that the sea ice is increasing, the polar bears are going to have better access to seals now. We must put seals on the protected species list to prevent their slaughter by the polar bears.”

Daily Tech

Editorial Comment: It is about time environmental scientists were humble enough to admit there are some things they cannot control, such as winds and ocean currents, and therefore their predictions about the future have been guesses, not facts. We encourage you all to look at the graph from University of Illinois. It is a good example of the regular patterns and cycles that are occurring in the environment all the time and fits with God’s promise to Noah that until the end of the world there would be cycles of heat and cold. (Genesis 8:22) (Ref. polar ice, weather, climate)

Evidence News 4 Feb 2009

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