Earlier quoted context omitted.
Plant trees. Lots of them.
Anyone working on new tech to plant trees more efficiently? Or engineering trees optimized for carbon sequestration?
Receding glacier causes Canadian river to vanish in four days
51–60 of 102 posts
Re: Receding glacier causes Canadian river to vanish in four days
#52Earlier quoted context omitted.
The statement should be there is a 99.5% chance that we correctly rejected the null hypothesis. I agree it isn't careful wording. Thanks.
I played a game of Monopoly where I started with a roll of 12. There was a 97% chance I correctly rejected the hypothesis that the dice were fair. Maybe this is true in some sense? But it's still somewhere between misleading and nonsensical to say.
Your second sentence should be in quotation marks to clarify that your comment is debunking it.
Re: Receding glacier causes Canadian river to vanish in four days
#53Earlier quoted context omitted.
Yes, I agree that p-value tests have flaws. If you look at the data to determine your hypothesis it's easy to overfit. Bayes factor appear to solve this issue. I disagree that this is a basic education issue. It is a lack of agreement among scientists as to what statistical analysis is appropriate.
"So it’s 99.5% that it occurred due to warming over the industrial era" There are at least a couple of statistical fallacies in this conclusion. And there isn't a lack of agreement about that. One problem with p-value tests is precisely that people misunderstand what the p-value means, which is where basic education comes in. It could save people from believing a lot of things they shouldn't. (Like many health and fi…
Do you agree to the statement "so it's 99.5% that we correctly reject the hypothesis it occurred without warming over the industrial era"?
Re: Receding glacier causes Canadian river to vanish in four days
#54Earlier quoted context omitted.
Train tracks in place of highways, for starters. Windmills and panels everywhere.
Yea totally! Does Hyperloop count as train tracks? I wonder what upcoming inventions in windmills look like...
Met a guy who was trying to sell a setup to plasma-fy the air along the edges of turbine wings to squeeze a bit more efficiency.
There's room for improvement still.
Re: Receding glacier causes Canadian river to vanish in four days
#55Earlier quoted context omitted.
Plant trees. Lots of them.
Anyone working on new tech to plant trees more efficiently? Or engineering trees optimized for carbon sequestration?
Technology is not the biggest challenge to reforesting, people are. What good is planting millions of trees with robots if poor peasants graze their goats in the area that kill them all? To succeed you need to get them to buy into the outcome.
China's efforts on the Loess Plateau has been held up as a success in reforestation which has also benefited the local agricultural economy.
https://www.youtube.com/watch?v=sK8JNXHcBMA
"The area of restoration on the Loess Plateau in China is the size of Belgium and thousands of years of subsistence farming had made it barren and infertile. In 1995 the Chinese Government, with support from The World Bank, took drastic action to rehabilitate the plateau, and local people -- seen as both perpetuators and victims of the devastation -- became part of the solution. They completely transformed 8.6 million acres of wasteland into hyper-productive land. This caused a 300% increase in agricultural income and enabled millions of local family farmers to break free from entrenched poverty."
Re: Receding glacier causes Canadian river to vanish in four days
#56I was just looking at the Alsek valley on Google Earth the other day. It's (obviously) a water-level route from behind the mountains to the coast, and abuts the drainage divide with the Yukon.
The entire Alsek-Tatshenshini-Kaskawulsh-Dezadeash system's upper reaches occur in glacier-scoured valleys so ice damming or stream undercutting could greatly change the direction rivers flow. The northwest-southeast trench that includes Kluane Lake and continues beyond Haines Junction is the Shakwak Trench [4], created by the Denali fault.
Here's a map of the article's glacier and the surrounding area: http://i.imgur.com/tL84Bd0.jpg (edited from the park map [1])
A different scan from a 1985 topo map: http://i.imgur.com/cVmWLlP.jpg (cropped from [2])
Meanwhile, 90 kilometers downriver (south) along the Kaskawulsh->Alsek, the west-to-east Lowell Glacier used to squish the north-to-south Alsek River against the far valley wall, damming it and causing a lake to extend upstream [3]-- the last time this happened was around 1850; the source estimates it'd take a year of being dammed for lake to extend up the Dezadeash to Haines Junction.
[1] http://www.pc.gc.ca/en/pn-np/yt/kluane/visit/~/media/088B38E... [2] http://www.canmaps.com/topo/nts250/med/115b.htm [3] http://www.geology.gov.yk.ca/lowell_glacier.html [4] https://en.wikipedia.org/wiki/Geography_of_Yukon#Physical_ge...
Re: Receding glacier causes Canadian river to vanish in four days
#57Booo it's the ghost of global warming! Always threatening, never happening.
Why do you believe this?
Shame, it was flagged and removed. It was a comment that was highly sarcastic and critical of climate change, but I'd say no more sarcastic than any other comment we might find on here. Perhaps we could have benefited from learning why people continue to falsely believe climate change isn't real.
Re: Receding glacier causes Canadian river to vanish in four days
#58Earlier quoted context omitted.
Why do you believe this?
Shame, it was flagged and removed. It was a comment that was highly sarcastic and critical of climate change, but I'd say no more sarcastic than any other comment we might find on here. Perhaps we could have benefited from learning why people continue to falsely believe climate change isn't real.
"Booo it's the ghost of global warming! Always threatening, never happening." is a worthless pointless comment and there's not going to be any useful discussion coming from it.
It's exactly the kind of comment that needs to be downvoted and flagged.
Also, flagging doesn't really remove anything. You can change the "showdead" setting in your options to see all flagged comments.
Re: Receding glacier causes Canadian river to vanish in four days
#59Earlier quoted context omitted.
Anyone working on new tech to plant trees more efficiently? Or engineering trees optimized for carbon sequestration?
http://www.biocarbonengineering.com/
"Since it is generally advantageous to have a heterogeneous mix of tree species planted in the same area, the planting UAV is capable of carrying a mix of seeds and control their planting pattern."
Cooooooooooool. Thanks!
Re: Receding glacier causes Canadian river to vanish in four days
#60Earlier quoted context omitted.
Plant trees. Lots of them.
Anyone working on new tech to plant trees more efficiently? Or engineering trees optimized for carbon sequestration?
For the latter, I think the research and other work for using Paulownia trees for carbon sequestration qualifies. I do seem to recall that there was some attempt to further cultivate it to be more suitable for that purpose.