File:Coropuna ice cap extent 1950-2015.svg

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Description	A combination of various measurements of the size of the Quelccaya ice cap from 1950 to 2015. Empty circles from Silverio & Jaquet 2012, p. 5882 Empty triangles from Silverio, Herold & Peduzzi 2010, p. 318 Plus from Silverio 2018, p. 45 Filled circle Marinque et al. 2018, p. 178 Square cross from Forget et al. 2008, p. 17 Diamond plus from Palenque et al. 2018, p. 101 Source code in R: plot(c(1955,1975,1986,1996,2003),c(123,105,96,64,56),xlim=range(1950,2015),ylim=range(35,150),pch=1,xlab="Empty circles from Silverio & Jaquet 2012, p. 5882, empty triangles from Silverio, Herold & Peduzzi 2010, p. 318, plus from Silverio 2018, p. 45, filled circle Marinque et al. 2018, p. 178, square cross from Forget et al. 2008, p. 17, diamond plus from Palenque et al. 2018, p. 101",ylab="Area of the ice cap in km2",main="Evolution of the ice cap on Coropuna from 1950 to 2015");arrows(c(1955,1975,1986,1996,2003),c(123,105,96,64,56)-c(15,16,15,8,6),c(1955,1975,1986,1996,2003),c(123,105,96,64,56)+c(15,16,15,8,6),length=0.05,angle=90,code=3);par(new=T);plot(c(1955),c(122.7),pch=2,xlim=range(1950,2015),ylim=range(35,150),xlab='',ylab='',axes=F);par(new=T);plot(c(1962),c(82.6),pch=3,xlim=range(1950,2015),ylim=range(35,150),xlab='',ylab='',axes=F);par(new=T);plot(c(1980,1987,1988,1991,1992,1995,1996,1998,2002,2003,2004,2005,2006,2007,2008,2010,2011,201,2014),c(58.0,52.9,52.2,51.9,50.3,50.1,49.0,48.0,49.2,48.6,48.7,47.5,47.5,46.4,45.2,43.7,44.9,44.8,44.1),pch=16,xlim=range(1950,2015),ylim=range(35,150),xlab='',ylab='',axes=F);arrows(c(1980,1987,1988,1991,1992,1995,1996,1998,2002,2003,2004,2005,2006,2007,2008,2010,2011,201,2014),c(58.0,52.9,52.2,51.9,50.3,50.1,49.0,48.0,49.2,48.6,48.7,47.5,47.5,46.4,45.2,43.7,44.9,44.8,44.1)-c(7.0,4.4,4.4,4.4,4.4,4.4,4.4,4.4,4.5,4.4,4.3,4.3,4.1,4.1,4.2,4.0,4.1,4.1,3.9),c(1980,1987,1988,1991,1992,1995,1996,1998,2002,2003,2004,2005,2006,2007,2008,2010,2011,201,2014),c(58.0,52.9,52.2,51.9,50.3,50.1,49.0,48.0,49.2,48.6,48.7,47.5,47.5,46.4,45.2,43.7,44.9,44.8,44.1)+c(7.0,4.4,4.4,4.4,4.4,4.4,4.4,4.4,4.5,4.4,4.3,4.3,4.1,4.1,4.2,4.0,4.1,4.1,3.9),length=0.05,angle=90,code=3);par(new=T);plot(c(2000),c(53.9),pch=7,xlim=range(1950,2015),ylim=range(35,150),xlab='',ylab='',axes=F);par(new=T);plot(c(2010),c(46),pch=9,xlim=range(1950,2015),ylim=range(35,150),xlab='',ylab='',axes=F)
Source	Plotted from the sources linked in the description using RStudio
Date	24 October 2019
Author	Jo-Jo Eumerus
Permission (Reusing this file)	See below.

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The margin of error code was adapted from the one displayed here

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:32, 24 October 2019		615 × 504 (88 KB)	Jo-Jo Eumerus (talk \| contribs)	Uploading a self-made file using File Upload Wizard

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Coropuna

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Width	492pt
Height	403pt