File:Plot arctic sea ice volume.svg
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English: Plot of estimated development of arctic sea ice volume between 1979 and now. Blue curve are data as determined by the numerical model PIOMAS. An error margin of +- 1.35 10³ km³ is given for october single values (minima) as orientation. Red dots are data from an analysis of CryoSat 2 radar freeboard measurements. Their single point uncertainty is in the range of +- 900 km³. Data have been digitized from plot. As the base region of Laxon et al's plot data is smaller than the base region of the PIOMAS simulation, the former have been extrapolated using the volumes ratio. A certain additional uncertainty is introduced by this procedure. NOTE: CryoSat 2 data points cover october to april, so their lowest point does not reflect the volume minimum, which happens in september.
Deutsch: Zeitverlauf der Schätzung des Volumens des arktischen Meereseises zwischen 1979 und 2010. Die blaue Kurve wurde durch das numerische Modell PIOMAS berechnet. Als Fehler für Einzelwerte wird für Oktoberwerte (Minima) +- 1.35 10³ km³ als Orientierung angegeben. Die roten Punkte stammen aus der Analyse von CryoSat-2 - Radar-Freibordmessungen. Die Werte wurden aus einer Grafik durch Digitalisierung gewonnen. Ihre Einzelwert-Unsicherheit liegt im Bereich von +- 900 km³. Da das Bezugsgebiet der Plotdaten kleiner ist als das der PIOMAS-Rechnungen wurden erstere extrapoliert unter Verwendung des Volumenverhältnisses. Hierdurch ist eine gewisse zusätzliche Unsicherheit eingeführt worden. BEACHTE: Die CryoSat 2 - Werte laufen von Oktober bis April; deshalb stellt ihr niedrigster Wert nicht das Volumenminimum dar, welches im September liegt.
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| Date | 3 March 2013 |
| Source | Own work, based on published data of Polar Science Centre, University of Washington, http://psc.apl.washington.edu/wordpress/research/projects/arctic-sea-ice-volume-anomaly/ and Laxon et al, "CryoSat-2 estimates of Arctic sea ice thickness and volume", GRL 40, doi:10.1002/grl.50193. Digitization of data has been done by Wipneus on https://forum.arctic-sea-ice.net/index.php?topic=8.msg825#msg825. |
| Author | Dominiklenne |
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