Update 08-read-write-plot.Rmd

Author: Robinlovelace

08-read-write-plot.Rmd

@@ -292,6 +292,8 @@ multilayer_rast = rast(multilayer_filepath)
 All of the previous examples read spatial information from files stored on your hard drive. 
 However, GDAL also allows reading data directly from online resources, such as HTTP/HTTPS/FTP web resources.
 The only thing we need to do is to add a `/vsicurl/` prefix before the path to the file.
+Let's try it by connecting to the global monthly snow probability at 500-m resolution for the period 2000-2012.
+Snow probability for December is stored as a Cloud Optimized GeoTIFF (COG) file (see Section \@ref(file-formats)) at [zenodo.org](https://zenodo.org/record/5774954/files/clm_snow.prob_esacci.dec_p.90_500m_s0..0cm_2000..2012_v2.0.tif).
 Let's try it by connecting to a remote GeoTIFF hosted by [OSGeo](https://download.osgeo.org/geotiff/samples/usgs/o41078a5.tif).
 This sample file is available online as a GeoTIFF (see Section \@ref(file-formats)).
 To read an online file, we just need to provide its URL together with the `/vsicurl/` prefix.