Domain: the-cryosphere.net
Stories and comments across the archive that link to the-cryosphere.net.
Comments · 4
-
Re:Any materialized predictions? (Re:Sudden?)
That doesn't explain record sea ice extents at a time when it is claimed that ocean, not particularly land, temperature is increasing. I'm not trying to claim it's irrelevant. But it certainly does not seem sufficient. [Jane Q. Public, 2015-05-22]
There are reasons to doubt the land ice melting connection to Antarctic sea ice, but I don't think that's one of them. I mentioned real reasons by citing Swart and Fyfe 2013, Polvani and Smith 2013 and referencing fig. 2 and fig. 4(e) from Parkinson and Cavalieri 2012 (PDF).
But ocean warming is sufficient to thin West Antarctic ice sheets, as I've explained:
"West Antarctica is among the most rapidly warming regions on Earth, with an ice sheet that's vulnerable to the warming oceans because it's mainly grounded below sealevel."
"Because West Antarctica juts out into the Antarctic Circumpolar Current (ACC), those warming waters are thinning its ice sheet at an accelerating rate.
... Its ice sheet is also mainly grounded below sealevel, making it more vulnerable to the warming oceans than the East's which is mainly grounded above sealevel."The fact that West Antarctica is mainly grounded below sealevel means that ocean warming causes rapid land ice thinning there. Also, the fact that the bedrock is deeper farther inland from the grounding line has "interesting" consequences. See Rignot et al. 2014 and Joughin et al. 2014.
-
Re:Charging amperage
It doesn't say what the capacity of this battery is.
It also doesn't say what the energy density is, and there is a comment that something called the "power density" needs improvement.
Searching around a bit, it looks like this is a bit of incremental improvement on Lithium Titanate to facilitate faster charging. The theoretical energy density is 175 mAhr/g at 1.5V or about 1 MJ/kg (petrol is ~40 MG/kg): http://www.the-cryosphere.net/...
This is at the top end of current Li-Ion batteries, so faster charging makes sense. I see also that there are "power densities" in W/kg reported for some battery types, so I guess that's a term of art in the battery business (it has been my experience that applied physicists routinely blind themselves to what they are doing by adopting such terminology, as it typically pertains quite restrictively to the state-of-the-art at the time the terminology was thunk up.)
-
Re:Faster than the global average?
And the amount it has actually risen in the Marshalls is roughly about 3". Even then, attributing this to "Climate Change" is a bit of a leap. Even though water has risen there "more than the global average", that's really not saying much since the global average is something like 1/4" over the last century. (Roughly... I don't remember the exact figure.) [Jane Q. Public]
Quoting 3" for the Marshalls makes it clear that Jane is talking about the total sea level rise, not the annual rise. Total global average sea level rise over the last century (1914-2014) is more like ~6 inches (see fig. 5 of Church and White 2011. Jane obviously doesn't remember the exact figure, because the rise Jane's memory provides is ~24x smaller than the actual observed rise.
Anyway, sea level rise can vary regionally due to factors like the gravity of thinning ice sheets.
-
Re:Why no rising sea level
Just a friendly little tip for you. People who know the meanings of words recognize when someone is using words they don't know the meanings of.
Also, along the same lines: some of us didn't sleep through high school physics. Some of us even went on to study at the university. Either go crack open a textbook or go play counterstrike but if you babble like that in here you're gonna get your ass handed to you by people who know what they're talking about.
Excuse me for a second:
Sublimation was not the point. The point was that the water is in the atmosphere. If snow melts, then ends up in the atmosphere as water vapor, it has effectively sublimated; So it entered the liquid phase for a minute, who gives a fuck?
Since you're only able to think in terms of the things you memorized in school and not the abstract, maybe you should go spend some time actually thinking rather than killing yourself correcting others. Dick Feynman would KICK you out of his class. You don't get anywhere by thinking conventionally. All you kids born in the 80's are all alike. So fucking full of yourselves.
Oh, and snow sublimates, you cock fuck. So while you were busy in school, learning what your uneducated, probably drug addicted high school teacher was telling you, I was reading the Journal of Climatology. Next time you post on Slashdot, remember: Google First. Kids...*sigh*