The double zoom has been renamed and relaunched. New zooms are added each day approximately 06:00am GMT. The permalink includes the dates, which I believe is more convenient. Screenshot above links to currently the fastest melting region. The archive includes besides all of August some older zooms indicated with bold letters in the calendar widget. Did you missed first snow in the Arctic - split zoom reveals even tiny changes.
The Danish DMI makes an excellent job in preparing daily Arctic Ocean surface temperatures. The satellite view now includes the actual temperature, anomalies and daily changes. More info on the chart page.