Pinboard (jm)
https://pinboard.in/u:jm/public/
recent bookmarks from jmPhotoferrotrophic Bacteria Initiated Plate Tectonics in the Neoarchean2023-07-03T10:52:19+00:00
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL103553
jmpapers bacteria life tectonics earth climate iron science geologyhttps://pinboard.in/https://pinboard.in/u:jm/b:0ab08c4eb0ae/Microsoft’s million-tonne CO2-removal purchase — lessons for net zero2021-10-04T21:35:38+00:00
https://www.nature.com/articles/d41586-021-02606-3
jmearth co2 microsoft stripe carbon carbon-capture climate-change net-zerohttps://pinboard.in/https://pinboard.in/u:jm/b:ff2868565800/The Loudest Sound Ever Heard2019-09-30T09:26:51+00:00
http://blogs.discovermagazine.com/crux/2018/07/13/krakatoa-sound-wave/
jmThe Krakatoa explosion registered 172 decibels at 100 miles from the source. This is so astonishingly loud, that it’s inching up against the limits of what we mean by “sound.”
When you hum a note or speak a word, you’re wiggling air molecules back and forth dozens or hundreds of times per second, causing the air pressure to be low in some places and high in other places. The louder the sound, the more intense these wiggles, and the larger the fluctuations in air pressure. But there’s a limit to how loud a sound can get. At some point, the fluctuations in air pressure are so large that the low pressure regions hit zero pressure—a vacuum—and you can’t get any lower than that. This limit happens to be about 194 decibels for a sound in Earth’s atmosphere. Any louder, and the sound is no longer just passing through the air, it’s actually pushing the air along with it, creating a pressurized burst of moving air known as a shock wave.[...]
Amazingly, for as many as 5 days after the explosion, weather stations in 50 cities around the globe observed this unprecedented spike in pressure re-occuring like clockwork, approximately every 34 hours. That is roughly how long it takes sound to travel around the entire planet.
]]>sound shockwaves earth krakatoa disasters volcanos eruptions noise decibelshttps://pinboard.in/https://pinboard.in/u:jm/b:d29b8bea64eb/Loss of Arctic's Reflective Sea Ice Will Advance Global Warming by 25 Years2019-07-29T11:33:23+00:00
https://scripps.ucsd.edu/news/research-highlight-loss-arctics-reflective-sea-ice-will-advance-global-warming-25-years
jm“Losing the reflective power of Arctic sea ice will lead to warming equivalent to one trillion tons of CO2 and advance the 2ºC threshold by 25 years. Any rational policy would make preventing this a top climate priority for world leaders,” said Ramanathan, a professor of atmospheric and climate sciences at Scripps. [....]
Computer forecast models are actually underestimating the extent of this trend. “We analyzed 40 climate models from modeling centers around the world,” said Eisenman, a professor of climate, atmospheric science, and physical oceanography at Scripps. “Not a single one of the models simulated as much Arctic sea ice retreat per degree of global warming as has been observed during recent decades.”
]]>arctic climate-change climate global-warming fear ice earthhttps://pinboard.in/https://pinboard.in/u:jm/b:2cf381505420/Excellent twitter thread on the "threat" of a "flood" of refugees post-climate-disaster2019-04-25T10:25:41+00:00
https://threadreaderapp.com/thread/1119495699408801792.html
jmracism fascism climate-change extinction earth climate-breakdown migration refugees walls borders futurehttps://pinboard.in/https://pinboard.in/u:jm/b:366ce7f38585/Bitcoin must die2018-10-16T10:43:51+00:00
https://sluggerotoole.com/2018/10/12/bitcoin-must-die/
jmIf Bitcoin were to cease trading tomorrow, 0.5% of the world’s electricity demand would simply disappear. This is roughly equivalent to the output of ten coal-fired power plants, emitting 50 million tonnes of CO2 per year – which would cover one year’s worth of the carbon emission cuts required to limit temperature rises this century to 2C. It is not a solution by itself, but it would be a good year’s work. Bitcoin is made from ashes, and if ashes were legal tender, humanity would burn everything in sight and call it progress.
]]>environment bitcoin ecology future earth cryptocurrencies pow electricity climate-changehttps://pinboard.in/https://pinboard.in/u:jm/b:c398516a443f/How To Survive The Coming Century2018-10-11T11:17:14+00:00
https://wanderinggaia.files.wordpress.com/2010/03/how-to-survive-the-coming-century-environment-25-february-2009-new-scientist.pdf
jmearth new-scientist climate fearhttps://pinboard.in/https://pinboard.in/u:jm/b:0e8e828c21d8/Earth’s Wonders Like You’ve Never Seen Them Before – Planet Stories – Medium2018-03-30T20:58:18+00:00
https://medium.com/planet-stories/earths-wonders-like-you-ve-never-seen-them-before-ac9e2f39aa56
jmvia:kokogiak pics photos satellite mapping earth space wonders obliquehttps://pinboard.in/https://pinboard.in/u:jm/b:fc11f53766f7/Burning Fossil Fuels Almost Ended All Life on Earth - The Atlantic2017-07-11T15:55:49+00:00
https://www.theatlantic.com/science/archive/2017/07/a-road-trip-to-the-end-of-the-world/532914/
jm“what I like to talk about is ‘the Great Weirding’ and not just the Great Dying because the Great Dying seems to have been a relatively quick event at the very end. But if you just talk about the Great Dying you’re missing all of this other crazy stuff that led up to it,” he said. “The Earth was getting really weird in the Permian. So we’re getting these huge lakes with these negative pHs, which is really weird, we don’t know why that happened. Another thing is that the whole world turned red. Everything got red. You walk around today and you’re like, ‘Hey, there’s a red bed, I bet it’s Permian or Triassic.’ The planet started looking like Mars. So that’s really weird. We don’t know why it turned red. Then you have a supercontinent, which is weird in the first place. Plate tectonics has to be acting strangely when you have all the continents together. Eventually it rifts apart and we go back into normal plate tectonics mode, but during the Permian-Triassic everything’s jammed together. So there has to be something strange going on. And then at the end, the Earth opens up and there’s all these volcanoes. But we’re not talking about normal volcanoes, we’re talking about weird volcanoes.”
]]>extinction history geology permian-era earth climate-change carbon-dioxide scary pangaeahttps://pinboard.in/https://pinboard.in/u:jm/b:f88607f61f61/When Will Climate Change Make the Earth Too Hot For Humans?2017-07-11T14:21:19+00:00
http://nymag.com/daily/intelligencer/2017/07/climate-change-earth-too-hot-for-humans.html
jmThe Earth has experienced five mass extinctions before the one we are living through now, each so complete a slate-wiping of the evolutionary record it functioned as a resetting of the planetary clock, and many climate scientists will tell you they are the best analog for the ecological future we are diving headlong into. Unless you are a teenager, you probably read in your high-school textbooks that these extinctions were the result of asteroids. In fact, all but the one that killed the dinosaurs were caused by climate change produced by greenhouse gas. The most notorious was 252 million years ago; it began when carbon warmed the planet by five degrees, accelerated when that warming triggered the release of methane in the Arctic, and ended with 97 percent of all life on Earth dead. We are currently adding carbon to the atmosphere at a considerably faster rate; by most estimates, at least ten times faster.
]]>climate future grim climate-change extinction earth carbon anthropocenehttps://pinboard.in/https://pinboard.in/u:jm/b:4d1d5fbe205b/Our Generation Ships Will Sink / Boing Boing2015-11-16T15:21:32+00:00
http://boingboing.net/2015/11/16/our-generation-ships-will-sink.html
jmearth future kim-stanley-robinson sf spacehttps://pinboard.in/https://pinboard.in/u:jm/b:097e4c6d7d2d/It’s Not Climate Change — It’s Everything Change2015-07-27T16:11:31+00:00
https://medium.com/matter/it-s-not-climate-change-it-s-everything-change-8fd9aa671804
jmclimate climate-change margaret-atwood long-reads change life earth green futurehttps://pinboard.in/https://pinboard.in/u:jm/b:8cfdcc804e08/TIL we have more gravity than Canada2015-05-18T09:26:15+00:00
http://science.howstuffworks.com/environmental/earth/geophysics/secrets-of-gravity.htm
jmgravity canada geode earth science hudson-bay masshttps://pinboard.in/https://pinboard.in/u:jm/b:d20d5a2d2b69/earth wind map2014-01-05T21:28:54+00:00
http://earth.nullschool.net/
jmearth map visualization weather javascript d3.js dataviz wind forecasts mapshttps://pinboard.in/https://pinboard.in/u:jm/b:524242fcf862/Dogs like to excrete in alignment with the Earth's magnetic field2014-01-02T11:13:01+00:00
http://www.frontiersinzoology.com/content/10/1/80/abstract
jmDogs preferred to excrete with the body being aligned along the North-south axis under calm magnetic field conditions.
]]>dogs poo excrement shit magnetic-field earth zoology papershttps://pinboard.in/https://pinboard.in/u:jm/b:29a904b4e5bc/Forecast Blog2013-08-29T20:59:15+00:00
http://blog.forecast.io/how-quicksilver-images-are-generated/
jmquicksilver forecast forecast.io neural-networks ai machine-learning algorithms weather geodata earth temperaturehttps://pinboard.in/https://pinboard.in/u:jm/b:38284b85153b/Rectangular subdivisions of the world2011-09-25T21:05:13+00:00
http://flowingdata.com/2011/09/22/rectangular-subdivisions-of-the-world/
jmmaps mapping bounding-boxes world earth geodata geotagging twitterhttps://pinboard.in/https://pinboard.in/u:jm/b:b80afccedd9c/