Fasciculus:NSIDC arctic sea ice extent since 1979.svg

Size of this PNG preview of this SVG file: 800 × 533 elementa imaginalia. Aliae mensurae: 320 × 213 elementa imaginalia | 640 × 427 elementa imaginalia | 1 024 × 683 elementa imaginalia | 1 280 × 853 elementa imaginalia | 2 560 × 1 707 elementa imaginalia | 810 × 540 elementa imaginalia.

Sua resolutio ‎(fasciculus SVG, nominale 810 × 540 elementa imaginalia, magnitudo fasciculi: 37 chiliocteti)

Hic fasciculus apud Vicimedia Communia iacet; in aliis inceptis adhiberi potest. Contenta paginae descriptionis fasciculi subter monstrantur.

Summarium

Descriptio	English: Plot of arctic sea ice extent development between 1979 and 2023 in monthly mean values. For the determination of the "area" value, every pixel with a sea ice concentration > .15 is taken. The pixel area is multiplied with the concentration value derived from the passive infrared signal. For the "extent" value, the concentration value is taken as 1, so we basically get full area with >.15 concentration. Deutsch: Verlauf der Umrissfläche des arktischen Meereises in Monatsmittelwerten von 1979 bis 2023. Für die "area"-Daten werden alle Pixel mit einer Eiskonzentration > 0.15 genommen und deren Fläche mit der Eiskonzentration multipliziert. Für die "extent"-Daten wird diese Eiskonzentration =1 gesetzt - so erhält man die Gesamtfläche mit überhaupt irgendwelchem Eis.
Datum	29 Augustus 2010
Fons	Opus proprium
Auctor	Dominiklenne

Data source: Fetterer, F., K. Knowles, W. Meier, and M. Savoie. 2002, updated until 2010. Sea Ice Index. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media. ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/. Corresponding website: http://nsidc.org/data/seaice_index/archives/index.html

For the area definition see: https://nsidc.org/learn/ask-scientist/what-difference-between-sea-ice-area-and-extent

Potestas usoris

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Historia fasciculi

Presso die vel tempore fasciculum videbis, sicut tunc temporis apparuit.

	Dies/Tempus	Dimensiones	Usor	Sententia
recentissima	17:48, 23 Octobris 2023	810 × 540 (37 chiliocteti)	Dominiklenne	update to october 2023
	21:07, 9 Maii 2023	810 × 540 (37 chiliocteti)	Dominiklenne	update to april 2023
	19:12, 4 Martii 2022	810 × 540 (36 chiliocteti)	Dominiklenne	update until february 2022
	00:39, 7 Novembris 2020	810 × 540 (42 chiliocteti)	Dominiklenne	update until october 2020
	17:16, 27 Octobris 2019	810 × 540 (45 chiliocteti)	Dominiklenne	data added until september 2019, year scale extended to 2030
	22:35, 30 Octobris 2018	810 × 540 (47 chiliocteti)	Dominiklenne	data updated until september 2018
	22:44, 8 Iulii 2017	810 × 540 (47 chiliocteti)	Dominiklenne	data updated until june 2017
	21:43, 22 Iulii 2016	810 × 540 (47 chiliocteti)	Dominiklenne	data updated until june 2016
	21:43, 27 Augusti 2015	810 × 540 (40 chiliocteti)	Dominiklenne	minor y scale change to the same as in https://commons.wikimedia.org/wiki/File:Plot_arctic_sea_ice_area.svg
	17:03, 27 Augusti 2015	810 × 540 (40 chiliocteti)	Dominiklenne	update until 2015 / 07. Use of python matplotlip pyplot instead of Gnumeric. Slightly different y-scale for better exhaustion of plot area.