Keywords: Arctic September Sea Ice Extent.png Arctic September Sea Ice Extent Observations vs Computer Model Runs - Scientists at the National Snow Ice Data Center NSIDC and the National Center for Atmospheric Research NCAR found that satellite and other observations show the Arctic ice cover is retreating more rapidly than estimated by any of the eighteen computer models used by the Intergovernmental Panel on Climate Change IPCC in preparing its 2007 assessments http //nsidc org/news/press/20070430_StroeveGRL html 2008-05 NSIDC updated with September 2007 minimum by <b><font color 009933 >Sagredo</font></b><sup><font color 8FD35D > </font></sup> PD-USGov Statistics for Arctic sea ice melting |