Tuesday, November 27, 2012 2:53:13 PM
climatologists reading the data have said "The composite record show large sea ice variations around a small negative trend since 1900, although the trend from a statistical point of view is not significant." -(Polyakov, I.V., Alekseev, G.V., Bekryaev, R.V., Bhatt , U.S. , Colony, R., Johnson, M.A., Karklin, V.P., Walsh, D. and Yulin, A.V. 2003. Long-Term Ice Variability in Arctic Marginal Seas . Journal of Climate 16, 2078-2085.)
The solid line is smoothed data the spotted line is made of points of observation. The Y axis is ice-extent anomalies (x 1000 km2) and X is year. The blue box is when the satellite-era began.
Tuesday, November 27, 2012 2:34:59 PM
Not to mention both our graphs are rather recent. If you look at 100 years of data the Arctic has only lost ice at 0.5%-0.7% per decade, with multiple fluctuations included. Which is considered normal after coming out of a little ice age only 1000 years ago.