Below are the Sentinel-1AB time series for the Nares for 01-25 Jan 2017. These were
made the easy way using the ability of ImageJ to chase down and compile a stack of urls (provided those end in an image tag such as jpg, tif, png etc) ready for stack-level cropping, rotating, and exporting as forum-ready gif.
Nares comes as a 37º diagonal so it is best to rotate CW to make best use of the 700 pixel forum constraint while retaining full resolution. Sentinels benefit from an adaptive contrast improvement (CLAHE command set at 64 pixel boxes at 1.65 slope).
Note a layer of upper arch peeling away in the last two frames.
There is no need to understand anything about ImageJ. Simply acquire and open File --> Import --> Stack from List... and point it at your previously compiled plain text file of urls. These are named and stored systematically (though variantly) at most sites. After competing stack operations, save as 'Animated Gifs...' with looping and an appropriate time delay between frames. Exit ImageJ, file is now ready for upload to the forum (or more reprocessing in gimp).
The DMI Greenland case is shown below; here just the Sentinels were wanted. For just 1A or just 1B use the 11th character in the file name as a sort field.
For Sentinel etc we don't know whether or not there will be an image taken tomorrow or some day next week. However it doesn't matter to ImageJ: if the image isn't available, it simply inserts an all black layer in the stack. Thus a rolling request window
solves the auto-updating problem.Sites like AMSR2, ADS-Jaxa, SMOS,... work very similarly. There are some resources however that don't display the source url or don't allow access to the archive folder hierarchy.
http://ocean.dmi.dk/arctic/kennedy.uk.php entry to DMI database
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ where the files are listed
Tabs and sort field need to be removed:
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170120s01b.ASAR.jpg b
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170122s01a.ASAR.jpg a
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170122s01b.ASAR.jpg b
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170123s01a.ASAR.jpg a
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170123s01b.ASAR.jpg b
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170124s01a.ASAR.jpg a
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170124s01b.ASAR.jpg b
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170125s01a.ASAR.jpg a
http://ocean.dmi.dk/arctic/images/MODIS/Kennedy/ 20170125s01b.ASAR.jpg b