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Will Arctic sea ice extent shrink to a new record minimum in 2008?

Current forecast: 55% chance 4%
Combining all predictions, the current forecast is that this is 55% likely to happen (up 4% in last 1 day)

This year's Arctic ice cap is said to consist of more "young", thinner ice than average, and thus might be more vulnerable to melting. Will the absolute minimum ice extent set a new record this year, or is this just "global warming alarmism"?
 
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Yes
55%
No
45%
Activity: H$72,595
Question suspends in 17 weeks
All questions are settled by Hubdub according to settlement info provided by the question creator.

Settlement details: As reported by http://ccar.colorado.edu/arifs/forecasts.html and/or nsidc.org. Extent means absolute minimum extent.

Suspend date: Wed 31st Dec 2:59pm PST (17 weeks to go)

Initial likelihoods: Yes: 60%

Action history:

Created Tue 20th May 1:59pm PDT by raidersin09
Suspended Thu 21st Aug 2:29am PDT by tisha[Admin]: reviewing comments
Unsuspended Thu 21st Aug 2:43am PDT by tisha[Admin]: See clarifying comment by Tisha, addressing comments and flags of concern on the market.
All questions are settled by Hubdub according to settlement info provided by the question creator.

Settlement details: As reported by http://ccar.colorado.edu/arifs/forecasts.html and/or nsidc.org. Extent means absolute minimum extent.... read all

 

Predictions (239)

239 predictions

7 hours ago
theib predicted Yes (H$50 at 55%)
1 day ago
rogerkni predicted No (H$500 at 48%)
1 day ago
bigken1 predicted Yes (H$500 at 50%)
1 day ago
bigken1 predicted Yes (H$100 at 49%)
1 day ago
rogerkni predicted No (H$1,000 at 50%)
more

Comments (6)

  1 intlibber
http://www.hubdub.com/m10139/Will_the_North_Pole_be_ice_free_at_any_point_in_2008

Related market, has my comments. Arctic has more ice than average at present.
posted 4 weeks ago
  2 intlibber
The argument is not sensical. There is more young ice because last year was the record melting, this past winter saw the coldest temps since the 1870's so a lot more new ice formed than usual, so much so that even Svalbard is reporting massive ice in the area when its normally ice free in that area this time of year.

Latest satellite images show lots of ice persisting into the end of July, more so than in past years.
posted 4 weeks ago
  3 bigken1
This question, like a number of them, is not well posed. The question asks "Will Arctic sea ice extent shrink to a new record minimum in 2008?", but then the question suspends in a week. This is before the minimum occurs, and the site for the solution is dependent upon a forecast model, not the actual data!

So, who knows how the answer will be settled?
posted 1 week ago
@bk: this is why I added nsidc.org as a source of data for settlement. NSIDC will post their calculation (based on data) of the areal extent of sea ice and will announce a date when they judge it had reached minimum area. If CatEd wishes to extend suspension date, I have no problem with that.
posted 1 week ago
  5 tisha[Admin]
I've changed the settlement date to the end of the year, although of course if the ice hits a new low before the end of the year it will be settled then.

I think the site being proposed for the settlement source is quite clear, and it does have forecast models but the actual graphs updated on the site are the recorded data. So this is the information that can be used to potentially settle the question.

Finally, this question is not an argument about whether loss of ice means is due to climate change, but is a factual question based on a clear data source.
posted 1 week ago
  6 intlibber
One issue I have with the settlement source is the information they've been putting out has been not reflecting reality. Arctic Ice Cover has been running 30% greater than last summer this time, but Colorado is only claiming 10%, a significant discrepancy. I would dispute using this settlement source as credible.
posted 1 week ago

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