This ikiMap evolves in real time. The maps are archived as they are replaced with a more recent version; you can view all the maps here.
|Screenshot from Flightradar24.com|
|Screenshot from OgleEarth|
"Based on data gleaned every six hours from the UK Met office, the resulting network link visualizes ash density from Grimsvötn at different times and airspace heights, and can be played as an animation. Here it is — open in Google Earth."
|Meteosat-9 visible channel images|
|Credit: NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team|
And of course, we can see many videos on YouTube of the Grimsvötn ash cloud. Here are just 2, one filmed from the air, and one from the ground: