Citat:
Med det sagt är jag åt det mer "total katastrof för mänskligheten"-hållet än bara "Det kommer bli varmt och så".
https://www.independent.co.uk/voices/climate-strike-protests-arctic-melting-a8825936.html
Vad som händer vid en blue ocean event, dvs. när arktis blir helt isfritt en sommar, vet jag inte till 100%, men nog tror jag att det kan vara startskottet till riktigt extrema väderhändelser alltid. Och, som sagt, mina framtidsprognoser menar att människan inte är kapabel att dra ner med utsläppen, vilket gör att vi kommer fortsätta tills något säger emot, och det kommer vara "något" som har med klimatet att göra, svårt att säga exakt vad.
https://www.independent.co.uk/voices/climate-strike-protests-arctic-melting-a8825936.html
Vad som händer vid en blue ocean event, dvs. när arktis blir helt isfritt en sommar, vet jag inte till 100%, men nog tror jag att det kan vara startskottet till riktigt extrema väderhändelser alltid. Och, som sagt, mina framtidsprognoser menar att människan inte är kapabel att dra ner med utsläppen, vilket gör att vi kommer fortsätta tills något säger emot, och det kommer vara "något" som har med klimatet att göra, svårt att säga exakt vad.
Ja, nog låter detta allvarligt!!!
Arktis kan bli 5 grader varmare innan 2100. Samtidigt blir haven allt surare och detta tillsammans förändrar livsbetingelserna drastiskt. Inte bara koraller dör.
Syreproduktionen i haven kommer att minska när phytoplankton dör, de producerar hälften av syret som vi andas!
Det här påminner om ”den stora döden” för 252 miljoner år sedan, då en stor del av livet på jorden utplånades för att temperaturen steg med ca 10 grader på några hundra år. Där blev det också syrebrist i haven.
The climate strike is a source for hope – but new research shows it might be too late
In the short to medium term, there are dark questions about the political future. In the long term, the chances for human survival are very slim
The end of the world is no longer a fanciful hypothesis. It is the most plausible scenario. In the last week, the UN Environment assembly announced its finding that, even if the Paris Agreement targets were met, global temperatures would rise by three to five degrees Celsius above pre-industrial levels.
Worse, even if all carbon emissions stopped immediately, the Arctic would be 5 degrees warmer at the end of the century than in the period between 1986 and 2005. The Arctic, that “Ice Temple of the polar regions” as the Norwegian explorer Fridtjof Nansen dubbed it, is particularly sensitive to global heating.
As the Cambridge polar researcher Peter Wadhams has shown, the “Arctic death spiral” is well underway. This ice will soon disappear, beginning with an ice-free September any year now.
The loss of ice-cover reduces albedo, wherein solar radiation is reflected back into space. More dark water surface absorbs heat rather than deflecting it. Thawing permafrost releases warming methane into the atmosphere.
The warming of the oceans, coupled with their ongoing carbonic acidification due to carbon emissions, will kill off a lot of marine life. The last of the remaining coral will be bleached, thus destroying one of the most biologically productive areas of the planet. It will also kill much of the phytoplankton that produce about half of the oxygen we breathe. The simple act of breathing will most likely become far more effortful, far more of a struggle, in the future.
…
This exacerbates what one research team calls “biological annihilation”, the terrifying loss of vertebrate populations amid the sixth mass extinction. Previous mass extinction events have taken place in pulses lasting for tens of thousands of years, separated by hundreds of thousands of years.
Our current mass extinction event is faster: 60 per cent of animal populations have been wiped out since 1970.
https://www.independent.co.uk/voices/climate-strike-protests-arctic-melting-a8825936.html
Rapport om “Den stora döden”, som inträffade för 252 miljoner år sedan.
The 'great dying': rapid warming caused largest extinction event ever, report says
The great dying event, which occurred over an uncertain timeframe of possibly hundreds of years, saw Earth’s temperatures increase by around 10C (18F). Oceans lost around 80% of their oxygen, with parts of the seafloor becoming completely oxygen-free. Scientists believe this warming was caused by a huge spike in greenhouse gas emissions, potentially caused by volcanic activity.
The new research, published in Science, found that the drop in oxygen levels was particularly deadly for marine animals living closer to the poles. Experiments that varied oxygen and temperature levels for modern marine species, including shellfish, corals and sharks, helped “bridge the gap” to what the model found, Payne said.
https://www.theguardian.com/environment/2018/dec/06/global-warming-extinction-report-the-great-dying