Fastest Arctic Ice Extent Refreeze Ever! (in 31 days)

Update: Another day another error to report. It appears that the percentage was calculated wrong. Instead of  43.8% it is 83.1%. Still the fastest ever. Corrected table below.

Year Minimum_Extent Extent Extent_Change Extent_Change_Pct
2012 3.36855 292 2.7991 83.1
2008 4.55469 294 3.4633 76
2010 4.59918 294 3.0069 65.4
2005 5.31832 297 3.23051 60.7
1990 6.0191 296 3.49865 58.1
1999 5.68009 287 2.80655 49.4
1991 6.26027 291 2.8399 45.4
2002 5.62456 288 2.49981 44.4
2004 5.77608 295 2.45647 42.5
1989 6.88931 297 2.7717 40.2
2000 5.9442 287 2.30344 38.8
2003 5.97198 292 2.28954 38.3
1979 6.89236 296 2.55691 37.1
1998 6.29922 292 2.32009 36.8
2007 4.1607 289 1.50469 36.2
2006 5.74877 289 1.95637 34
1982 7.15423 288 2.41499 33.8
1984 6.39916 292 2.08442 32.6
1993 6.15699 281 1.99632 32.4
2009 5.05488 287 1.59002 31.5
2011 4.30207 283 1.34784 31.3
2001 6.56774 294 1.98268 30.2
1988 7.04905 287 1.85327 26.3
1986 7.12351 281 1.8491 26
1996 7.15283 286 1.85602 25.9
1981 6.88784 285 1.71672 24.9
1992 7.16324 283 1.77142 24.7
1983 7.19145 283 1.70096 23.7
1985 6.4799 282 1.50769 23.3
1987 6.89159 277 1.55764 22.6
1994 6.92645 280 1.19137 17.2
1980 7.52476 281 0.95144 12.6
1997 6.61353 278 0.75388 11.4
1995 5.98945 284 0.59766 10

Today is day 291 in the Arctic. The minimum in 2012 was on day 260 – 31 days ago.

If you calculate the percentage of ice gained (the refreeze) 31 days after minimum, then 2012 is the fastest refreeze ever!

Arctic Sea Ice Extent has increased by 43.8% since the minimum was reached.

Extents are in millions of sq km.

(And note I am using NSIDC data here and their algorithm is making the refreeze appear slow compared to NORSEX)

Incorrect Table:

Year Minimum_Extent Extent Day Extent_Change Extent_Change_Pct
1979 6.89236 295 2.55691 27.1
1980 7.52476 280 0.95144 11.2
1981 6.88784 284 1.71672 20
1982 7.15423 287 2.41499 25.2
1983 7.19145 282 1.70096 19.1
1984 6.39916 291 2.08442 24.6
1985 6.4799 281 1.50769 18.9
1986 7.12351 280 1.8491 20.6
1987 6.89159 276 1.37713 16.7
1988 7.04905 286 1.76783 20.1
1989 6.88931 296 2.70935 28.2
1990 6.0191 295 3.46791 36.6
1991 6.26027 290 2.69726 30.1
1992 7.16324 282 1.67903 19
1993 6.15699 280 1.85199 23.1
1994 6.92645 279 1.1014 13.7
1995 5.98945 283 0.5189 8
1996 7.15283 285 1.77882 19.9
1997 6.61353 277 0.65032 9
1998 6.29922 291 2.35169 27.2
1999 5.68009 286 2.68723 32.1
2000 5.9442 286 2.32372 28.1
2001 6.56774 293 1.95252 22.9
2002 5.62456 287 2.41992 30.1
2003 5.97198 291 2.10126 26
2004 5.77608 294 2.37329 29.1
2005 5.31832 296 3.09221 36.8
2006 5.74877 288 1.72446 23.1
2007 4.1607 288 1.39556 25.1
2008 4.55469 293 3.33615 42.3
2009 5.05488 286 1.45951 22.4
2010 4.59918 293 2.88065 38.5
2011 4.30207 282 1.35023 23.9
2012 3.36855 291 2.62409 43.8

4 thoughts on “Fastest Arctic Ice Extent Refreeze Ever! (in 31 days)

  1. Your percentage figures don’t show the *rate* of refreeze. The amount of refreeze over the 31 days – the extent-change column, gives a better idea and suggests this isn’t the fastest refreeze ever 🙂

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