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the polar ice<font color="#CCCCCC"> caps have been shrinking</font>

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in summer and expanding in winter for

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<font color="#E5E5E5">millions of years but in the last three</font>

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decades the Arctic<font color="#E5E5E5"> sea ice at</font><font color="#CCCCCC"> the end of</font>

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each summers melt has been getting

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steadily smaller the decline<font color="#CCCCCC"> was</font><font color="#E5E5E5"> already</font>

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alarming but in 2007 when the sea ice

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melts shattered the previous record<font color="#CCCCCC"> by</font>

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almost twenty-five percent researchers

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at NASA's Goddard Space Flight Center

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wondered is this an anomaly or part<font color="#E5E5E5"> of</font>

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an<font color="#E5E5E5"> even more alarming trend we have had</font>

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low ice cover since 1998 in the Arctic

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and what that<font color="#CCCCCC"> means is</font><font color="#E5E5E5"> that you have</font>

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more open water in<font color="#E5E5E5"> the region</font><font color="#CCCCCC"> and with</font>

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more open<font color="#E5E5E5"> water you're getting more</font>

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solar energy into the system so the

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<font color="#E5E5E5">Arctic Ocean has actually been warming</font>

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up as the ice<font color="#CCCCCC"> melts less light energy is</font>

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reflected back<font color="#E5E5E5"> into space and more of</font>

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the sun's energy is absorbed into<font color="#E5E5E5"> the</font>

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ocean which fuels further melting in

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march two thousand eight the<font color="#CCCCCC"> ice cap</font>

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rebounded to a near normal winter level

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but much of this ice was thin single

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year ice and after a record rate of

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melting in<font color="#CCCCCC"> the month of</font><font color="#E5E5E5"> August the ice</font>

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shrank to its second smallest extent on

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record if it keeps<font color="#E5E5E5"> on going then the</font>

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potential is that you lose the perennial

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ice altogether then we'll have<font color="#E5E5E5"> a blue</font>

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ocean in the Arctic now if the ocean

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becomes low there will be<font color="#CCCCCC"> a lot of</font>

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environmental impacts there are a lot of

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ecological impacts<font color="#CCCCCC"> chemie so says the 30</font>

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years of satellite data we have on

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<font color="#CCCCCC">Arctic sea ice</font><font color="#E5E5E5"> suggests that it's not</font>

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likely to recover as a scientist<font color="#E5E5E5"> he is</font>

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intrigued by the trends but personally

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he<font color="#E5E5E5"> worries about the planets future well</font>

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it makes me feel<font color="#CCCCCC"> sad</font>

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<font color="#CCCCCC">a lot of things</font><font color="#E5E5E5"> can happen in terms of</font>

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the<font color="#E5E5E5"> impacts to the environment impacts</font>

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<font color="#E5E5E5">to the ecosystem not just in the Arctic</font>

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but for the whole whole earth and the

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ocean is such a big part of the<font color="#E5E5E5"> climate</font>

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system and you / curve it a little bit

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and you're going to<font color="#CCCCCC"> chance the</font><font color="#E5E5E5"> climate</font>

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of<font color="#CCCCCC"> the world one result</font><font color="#E5E5E5"> of such global</font>

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climate change has already begun<font color="#CCCCCC"> to</font>

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emerge at the other end of the earth

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summer sea ice minima in the southern

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hemisphere have not been declining as

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warmer ocean water promotes evaporation

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which creates more snow to feed the

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Antarctic ice fields NASA scientists are

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using a suite of satellites to study sea

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ice at both poles trying to better

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understand how<font color="#CCCCCC"> a complex set of</font>

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phenomena such as cloud<font color="#CCCCCC"> cover</font>

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reflectivity a thickness of the ice

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weather patterns like La Nina and El

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Nino and ocean temperature<font color="#E5E5E5"> affect the</font>

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trends we see today

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you