I try to show this every time I give a presentation. Many people say it makes an impression, and I’m glad NOAA has updated to 2015.
Watch as the thickest, oldest, arctic sea ice (the lighter colors) disappears over the last 25 years or so – even tho the ice continues to freeze out every winter, the total mass/thickness continues to decline.
It makes a terrific impression—-and anyone with an IQ of 90 or above should get the picture. Since it gets cold enough every winter up there, we will always have ice form, even when more tropical areas become so hot as to be uninhabitable, but it’s the disappearance of the multi-year ice that’s scary, since that’s the stuff that’s keeping up the albedo at the height of summer. Once it’s gone, another warming feedback loop will intensify.
The deniers will simply assert that it is part of a normal cycle and that our activities have had nothing to do with it.
Reblogged this on Less CO2 Blog and commented:
Den här korta filmen är värd att titta på. Den sammanfattar på ca 1 minut en av de många argumenten för att skapa en fossilfri värld. Inte sedan utan NU!