Glaciers lost in time

  Рет қаралды 35,313

nature video

nature video

8 жыл бұрын

As the world warms, Greenland melts. We know that sea levels are rising, but it’s hard to predict how quickly Greenland’s glaciers might disappear into the sea. Anders Anker Bjørk and his colleagues are using 1930s photos to examine how these glaciers have changed over the last 80 years, and what their future might hold.
Read the feature here: www.nature.com/news/180-000-fo...

Пікірлер: 29
@IamanatheistAndthisiswhy1
@IamanatheistAndthisiswhy1 8 жыл бұрын
Wonderful video showing the complex nature of a warming Earth.
@ttmallard
@ttmallard 7 жыл бұрын
The Pleistocene rate-of-change for CO2 averaged 1-ppm/1000-yrs, big jump up end of the last ice-age 1-ppm/180-yrs, last year we set a record 3.05-ppm, one year. We're 5-times above "natural variation" for maximum CO2 of the epoch at 305±5-ppm during the 800k-yr ice-core record; variation was 100-ppm, 180-280ppm, 305-280 = 25, 25÷280 = 9%, at 405-ppm 125÷280 = 45%. At 405-ppm we jumped CO2 too fast from 305-ppm in 1916 we added 100-ppm in 100-years, that's acidifying the oceans 10-times faster than an extinction event to put frosting on the burnt carbon cake. The bonus at 405-ppm is sea-level goes up 25m/82ft for sure, during the early Pliocene it went as high as 40m/131ft and we're biz-as-usual shootin' for 600-ppm or bust. There is no "carbon budget" left that's a propaganda term like "manifest destiny", what a cruel joke, for 2015 we did 37-Gigatons CO2-eqv, frozen it's 37 cubic-km's of gas, 25% of it stays for over 10,000-years in the atmosphere, Catch-22 on CO2. The idea to sequester that much CO2 a year will shatter strata to earthquakes worse than Oklahoma along with acid poisoning from the CO2 touching groundwater or aquifers. Dumped into the sea it causes a benthic extinction. That's rather immature and delusional geophysically speaking, it's the same problem with nuclear waste, eh? End the Steam-Age for electrons, 80% of grid power is for thermal end uses so ending the grid will take less than 5-years, if it was a war maybe 2-months.
@mr.elastomeric1787
@mr.elastomeric1787 7 жыл бұрын
Nice replyTom what is benthic extinction
@mr.elastomeric1787
@mr.elastomeric1787 7 жыл бұрын
well done
@BUSTER.BRATAMUS
@BUSTER.BRATAMUS 4 жыл бұрын
Does ice melt?
@firoz554
@firoz554 8 жыл бұрын
the background music please
@williamgoetz2340
@williamgoetz2340 8 жыл бұрын
This is not that simple.
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