wadhams-collapse

Inconvenient: Record Arctic Sea Ice Growth In September

History Keeps Proving Prophets Of Eco-Apocalypse Wrong Source data: ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/north/daily/data/ Since hitting its earliest minimum extent since 1997, Arctic sea ice has been expanding at a phenomenal rate. Already it is greater than at the same date in 2007, 2008, 2010, 2011, 2012 and 2015. Put another way, it is the fourth highest extent in the…

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Arctic ice – a historical viewpoint

Guest essay by Roger Graves The subject of the extent of Arctic ice cover has been much in the news, with an apparently unending series of attempts to predict its future extent on the basis of a relatively few years’ worth of data. However, it is possible to make some general predictions, based on a…

nsidc-data-sep7-2016

Discrepancy in NSIDC press release vs. data puts turning point for end of Arctic ice melt 3 days earlier

Yesterday, as covered by WUWT, NSIDC announced that Arctic sea ice melt had turned the corner on September 10th with a value of 4.14 million square kilometers: Source: http://nsidc.org/arcticseaicenews/2016/09/2016-ties-with-2007-for-second-lowest-arctic-sea-ice-minimum/ XMETMAN writes of his discovery of a discrepancy between what NSIDC announced yesterday, and what their data actually says. I’ve confirmed his findings by downloading the data myself…

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Arctic sea ice melt has turned the corner

I almost called this yesterday, but I needed more data to be sure. All of the data I’ve looked at agrees, Arctic sea ice is now on the upswing, and in a big way. Here is the plot from NSIDC: This graph from Wipneus shows the abruptness of the change: And the physics of ice…