at no time between now and the end of the year 2020 will the minimum total Arctic
Sea ice extent be less than 10% of the 1979-2000 average minimum annual Arctic Sea ice extent, as measured by NSIDC data or any other measurement mutually agreed-upon; provided, however, that if two or more volcanic eruptions with the energy level equal to or greater than the 1991 Mount Pinatubo shall occur between now and the end of 2020, then all bets are voided.
I’m not up to my limit on this one yet, and I know James isn’t, so there could be more on offer if there are any takers?
See-also a bet on next years ice.
[2021/02: I’ve just remembered this. I’ve mailed JR to see if he does, too…
Nope: his automated defences are too good: <joe-romm>@americanprogress.org only accepts messages from people in its organization or on its allowed senders list, and your email address isn’t on the list. Meh: my always rather low can’t-be-bothered threshold has been reached; I’ll take pity on him.
JR’s original post is now dust with the electrons d’antan; fortunately there’s an InternetArchive of it. Notice how he, too, is somewhat disappointed not to be betting with the denialists.]