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I read it for an economics college course two years ago. Absolutely stellar.
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Jan 27, 2018 21:26
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Grouchio posted:Does this thread ever get good news? No, it's why we drink too much. Come to CSPAM. DEHUMANIZE YOURSELF AND FACE TO BLOODSHED! 
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Jan 27, 2018 23:00
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Fasdar posted:we really ought to, you know, rise up or something. western liberalism in one sentence
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Jan 28, 2018 07:00
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Arglebargle III posted:western liberalism in one sentence Faved and retweeted, my work here is done
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Jan 29, 2018 11:55
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A while ago, I was wondering if there might be some climate change-related benefit to drone delivery/logistics. fishmech explained to me that no, obviously not! Now I've come across two studies trying to model this. https://www.sciencedirect.com/science/article/pii/S136192091630133X Prof. Anne Goodchild posted:- CO2 emissions and VMT are compared between truck and UAV/drone delivery models. https://www.sciencedirect.com/science/article/pii/S1361920917304844 Miguel A.Figliozzi posted:the results clearly indicate that UAVs are more CO2e efficient, for small payloads, than conventional diesel vans in a per-distance basis. Drastically different results are obtained when customers can be grouped in a delivery route. UAV deliveries are not more CO2e efficient than tricycle or electric van delivery services if a few customers can be grouped in a route. Vehicle phase CO2e emissions for UAVs are significant and must be taken into account. Ground vehicles are more efficient when comparing vehicles production and disposal emissions per delivery. Interesting.
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Jan 30, 2018 01:30
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It's almost like we need a variety of solutions optimized to specific cases.
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Jan 30, 2018 01:50
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Cingulate posted:fishmech explained I found your problem.
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Jan 30, 2018 03:32
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we need to die soon tell me what i need to do to fulfill my duty to destroy civilization
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Jan 30, 2018 05:29
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enraged_camel posted:we need to die soon Business as usual. The flip side of having no power to fix things is that you also have no power to create any real acceleration.
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Jan 30, 2018 05:47
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not true, just scam some investors with bitcoin ponzis and then use your profits to dump a bunch of iron and phosphorous off the gulf of mexico somewhere bing bang bong simple
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Jan 30, 2018 06:21
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enraged_camel posted:we need to die soon First, stop posting. Second, get out there and start repeating your frankly tiring opinion that we should all die and civilization should collapse to real people if you want to make a real difference.
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Jan 30, 2018 08:41
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Actually they could just go and murder a few CEOs in the name of environmentalism. It'll either create backlash against environmentalist movements and policies or actually cause meaningful positive change, so either way it works out for them.
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Jan 30, 2018 09:04
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Cingulate posted:A while ago, I was wondering if there might be some climate change-related benefit to drone delivery/logistics Tricycle delivery is an option?
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Jan 30, 2018 12:41
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WeAreTheRomans posted:Tricycle delivery is an option?
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Jan 30, 2018 12:46
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Evil_Greven posted:The global report is still not out, but U.S. national report was released on Friday. As expected, it ain't pretty: Just don't stop consuming. Ever. We need corporate profits to keep rolling in.
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Jan 30, 2018 12:58
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enraged_camel posted:we need to die soon Have lots of kids, vote republican. I'm not having kids but I am voting republican so we can all die faster.
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Jan 30, 2018 12:59
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Grouchio posted:I was hoping to live for at least a millenia (through anti-aging tech), and witness humanity's 'progress'. Is that now guarenteed to be a bad idea?  Unless you're a multi-billionaire you ain't getting any anti-aging technology, cmon dude
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Jan 30, 2018 13:04
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https://twitter.com/nytimes/status/958444765535666177
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Jan 31, 2018 02:05
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enraged_camel posted:good. that's a start.
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Jan 31, 2018 03:54
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figure out a way to foul up the wyoming branches of the rail network
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Jan 31, 2018 04:11
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I've been trying to find decent information on how long they expect local aquifer systems to be able to keep up with demand, but not having much luck. Just a news article from a few weeks ago where a consulting group determined the capacity was at least 150 million L/day. That would be about 50% more than the metro area needs if they're rationing at 25 L/capita-day.
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Jan 31, 2018 07:25
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Hello Sailor posted:I've been trying to find decent information on how long they expect local aquifer systems to be able to keep up with demand, but not having much luck. Just a news article from a few weeks ago where a consulting group determined the capacity was at least 150 million L/day. That would be about 50% more than the metro area needs if they're rationing at 25 L/capita-day. Their aquifers are generally pretty shallow, and get a lot of recharge, but the greater capetown area's groundwater is highly vulnerable due to easy permeability of contaminants through the area's sandy soils and high risk of contamination due to lots of development. I couldn't find anything about total available groundwater in the area, though. Edit: read a little more. Their aquifers are all relatively shallow (not sure if alluvial or what) and have been managed for controlled recharge in the past. It seems like a lot of the infrastructure has been left to go to poo poo, however. Fasdar fucked around with this message at 07:46 on Jan 31, 2018 |
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Jan 31, 2018 07:39
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Hello Sailor posted:I've been trying to find decent information on how long they expect local aquifer systems to be able to keep up with demand, but not having much luck. Just a news article from a few weeks ago where a consulting group determined the capacity was at least 150 million L/day. That would be about 50% more than the metro area needs if they're rationing at 25 L/capita-day. Sort of the wrong question either way, if this is really the new normal the aquifers could be large and the city would still be doomed, but they are most likely large enough to cover up need for a few bad years, and it still seems likely that addition of dams to handle a more temperamental weather, and wide deployment of grey-water systems, will be a working longer-term solution. On the other side, if day zero happens there really seems to be very little chance that the 25 liters per person and day can actually be organized, whether or not one has the water for it (if nothing else the hit to the local economy as most businesses can no longer operate will start a bad spiral). Something will have to give in that scenario. Luckily the restriction compliance numbers, and as such the dam level changes, were a lot better last week, likely precisely because these things are getting a much fairer look in the media and public discourse. They are still projecting day zero for April 16th, but I think they are now on the pessimistic side with the window of use considered, as taking last weeks dam level change and just projecting forward I get May 10th. Even that should be pessimistic, since they are now starting to shut off the taps on a lot of agricultural operations. Still far too close for comfort, but we may actually make it if things turn out well. There are a lot of unknowns and uncertainties though. For example, the issue of the estimated unextractable 10% in dams, that number is almost certainly to some extent plucked out of the air, and if it is closer to 15% things again look very grim, but if it turns out closer to 5% there is actually a bit more room to operate. The biggest dam, Theewaterskloof, is currently sitting at 13.3% (https://resource.capetown.gov.za/documentcentre/Documents/City%20research%20reports%20and%20review/damlevels.pdf), and I will be biting my nails a bit checking next weeks report (they get uploaded to the same place every Monday) to see if they have managed to keep drawing from it at the current pace. They most likely want to keep drawing from the dams with the least remaining water, as it both gives a clearer picture of what can't be extracted, and lowers the total area subject to evaporation. Cybernetic Vermin fucked around with this message at 10:47 on Jan 31, 2018 |
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Jan 31, 2018 10:44
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In prehistory climate change news university of Kansas did a study that suggests a comet caused significant changes 12,800 years ago: https://www.google.com/amp/s/www.un...firestorms/amp/ It corresponds roughly with the vulture stone pillar at gobleki tepe and the younger dryas period Banana Man fucked around with this message at 06:14 on Feb 5, 2018 |
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Feb 5, 2018 06:01
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Banana Man posted:In prehistory climate change news university of Kansas did a study that suggests a comet caused significant changes 12,800 years ago: https://www.google.com/amp/s/www.un...firestorms/amp/ That's incredible! Plus it got me to wik gobleki tepe, which I am currently struggling to slot into my mental timeline-of-world-history...
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Feb 5, 2018 23:43
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So, did we talk about this EASAC report on negative emissions from last month at all? I don't think anything in here is actually news to anyone paying attention, but it's interesting to see an assessment in one place. Ars has a short piece on it today.quote:Things like biofuels and industrial capture plants rely on the existence of underground storage infrastructure, which is also behind schedule. Some projects are already operating, but most are just reinjecting gas into oil fields to keep the crude flowing. It’s not so much that we haven’t figured out how to do things like biofuels. There just isn’t enough of a financial incentive to do them in the absence of significant fees assessed on emissions. Nothing too shocking, but it does highlight how unrealistic current carbon budgets are given that we basically don't any market based solution for how large scale negative emissions will actually happen.
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Feb 5, 2018 23:53
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Tree Bucket posted:That's incredible! Plus it got me to wik gobleki tepe, which I am currently struggling to slot into my mental timeline-of-world-history... Yeah it's pretty amazing. I've been on a prehistory kick and naturally it's pretty sparse for info, but what is there is fascinating.
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Feb 6, 2018 03:42
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So I have just had my climate change paper accepted, as a lead author, published in the Journal of Climate, working with 25 global climate change models using CMIP5. It was on the changing relationship between midlatitude cyclones and precipitation in California, out to 2100. Basically, overall rates of precipitation doesn't change much (uncertainty), storm tracks move poleward and fewer midlaitutde cyclones hit California but those that do bring more precipitation, probably due to increases in humidity. Curiously, changes in midlatitude cyclone intensity (pressure) had no relationships with precipitation. No linky yet. I also grew up in Cape Town. 
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Feb 6, 2018 11:40
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Congrats on getting published, feels good.
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Feb 6, 2018 13:00
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BattleMoose posted:So I have just had my climate change paper accepted, as a lead author, published in the Journal of Climate, working with 25 global climate change models using CMIP5. Congrats, keep up the good work.
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Feb 6, 2018 20:03
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BattleMoose posted:So I have just had my climate change paper accepted, as a lead author, published in the Journal of Climate, working with 25 global climate change models using CMIP5. so when are we all dying
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Feb 6, 2018 20:13
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e: wrong thread
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Feb 6, 2018 20:23
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enraged_camel posted:so when are we all dying sooner than you'd think later than you'd hope
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Feb 6, 2018 21:31
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BattleMoose posted:So I have just had my climate change paper accepted, as a lead author, published in the Journal of Climate, working with 25 global climate change models using CMIP5. Congrats that's awesome  Did your paper come to any conclusions about the ridiculously resilient ridge? I naively think it would be a major driver of shifting storm tracks poleward.
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Feb 6, 2018 22:16
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Notorious R.I.M. posted:Congrats that's awesome No it didn't, although I did reference Swain more than a little and discussed its role in the recent California drought. My paper had more of a "bigger picture" perspective and we didn't examine the specific synoptics that are correlated to the drought. The ridge of high pressure does push the storm track poleward which is a robust finding from the global climate models. The ridge in that location isn't a new phenomenon and not sure if it is more resilient today that it was in previous decades. Droughts in California are extremely strongly correlated to a ridge of the cost of Washington and there have been bad Californian droughts before this one. That being said we do expect the subtropical ridge (of which the RRR is most likely a feature) to move poleward and to shift the storm track poleward (very robust findings from the global climate change models), and areas that are dependent on these storms for water will get less. Think San Diego (and southern California), Perth and Cape Town. BattleMoose fucked around with this message at 22:35 on Feb 6, 2018 |
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Feb 6, 2018 22:32
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Here's a fun one: Permafrost soils store nearly twice as much Mercury as all other soils, the ocean, and the atmosphere combined, and this Hg is vulnerable to release as permafrost thaws over the next century.
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Feb 8, 2018 12:43
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Forever_Peace posted:Here's a fun one: Permafrost soils store nearly twice as much Mercury as all other soils, the ocean, and the atmosphere combined, and this Hg is vulnerable to release as permafrost thaws over the next century. Was just coming here to post this. I hate this timeline.
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Feb 8, 2018 21:13
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El Laucha posted:Was just coming here to post this. Assuming you were talking to someone who skimmed the article & even then thought 'crap' In layman's terms, how bad is this?
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Feb 8, 2018 22:35
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Not clear until they get more data. Sample size is small. But it's not unlikely that, for this and many other reasons, you'll want to enjoy sushi while it lasts.
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Feb 8, 2018 22:58
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Trainee PornStar posted:Assuming you were talking to someone who skimmed the article & even then thought 'crap' My understanding is that there are two major effects from it. 1: Thawed permafrost soil will not be arable without extensive treatment. It's not the case that as more southern regions become more arid, more northerly regions become more hospitable. I really don't know much about the effects of mercury in soil and to what degree we can mitigate, and I would love to hear from someone that knows more. 2: Soil runoff into the ocean will lead to biomagnification of mercury in the aquatic food chain, e.g. the fish you eat will contain significantly more mercury. Overall this is very much not a good thing. This is a pretty new sector of studies though so we'll need to see what further research comes out.
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Feb 8, 2018 23:02
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