I am just posting it to vent a bit, after 12+ years of watching ice melt and listening to people argue about ice melting.
A mere 12+ years. Johnny come lately !
Well, the "plus" in "12+" makes it an "open-ended bin", as we say around here. I can't remember how long I've been doing this (going online every day or two to see how the ice is doing RIGHT NOW...)
When did it even first become possible to do this? I think Cryosphere Today was one of the earliest routinely-updated sources (the Wayback Machine has it going back to December 2004) and the NSIDC sea ice news archives go back to October 2006. SkepticalScience started late in 2007, I believe. I was definitely an "early adopter", but honestly can't remember when I started obsessively
watching the ice melt on a daily basis (this sounds like a confession from some kind of deranged self-help group).
Loved the "shriek, horror" reactions.
Honestly, that wasn't my intent.
But like it or not, arctic sea ice decline (extent, area, and volume) still seems to be in that part of the curve that approximates well to a straight line over the decades. Many natural systems behave like that, until a point is reached when the system breaks down and collapses. My favourite is eutrophication, a water body's oxygen levels only gradually declining as more nitrates and phosphates are washed into it - up to a point when a small additional amount causes total deoxygenation.
Something like this is my speculation on the future for Arctic Sea Ice - but when, that is the question.
Yes, but I wonder how often crashes like that happen to
big systems, like the entire Arctic ice pack? I mean, at geologic time scales this
is a crash, because it's happening over decades rather than millennia. In 2007 and again in 2012 it looked briefly like all the ice could just go "poof" in the next few years, but that didn't happen and now I am somewhat inclined towards Chris Reynolds's "slow transition" argument.
Greenland ice cores do seem to show big "flips" in North Atlantic climate that happened in relatively short times within the glacial portion of the glacial-interglacial cycle.
but the rate of change is much faster than implied by the extent graph on its own. If the "slow transition" doesn't stop the bottom volume trend, we'll hit the ice-free point way before 2030.
Yes, that is the paradox that we've all been hung up on for some time now.
Another piece of the puzzle. A repost but a good one.
Global Temperatures and El Niño/La Niña
Yes, that's a great one. I'm very familiar with the static version but hadn't seen the video clip. Thanks for posting it. It's remarkable what a good job disaggregating the temperature data by ENSO status does at reducing noise.
This thread will disappear by itself within weeks.
If history is anything to go by, it will melt off the first page of the thread-list for the ASI category within 2 weeks or so after people start following the advice in the thread title.
Of course, as we all know, whether or not "history is anything to go by" is a big point of dispute around here. Maybe this time will be different! Instead of a slow transition to obscurity, the whole thread could go "poof" today if Neven hits the right key. We'll have to watch this thread to see which path it takes ... but
watching the thread would be contrary to the request in the thread title.
Paradoxes all around us...
... and with that, I'll stop bumping the thread and let the melting process (or sudden "poof") proceed. Thanks to all for the feedback.