#facestab last cranked 2020-05-21 16:42

Marine Pollution Bulletin (2009)| The coral reef crisis: The critical importance of <350 ppm CO2
posted by AnOminous at 2020-05-21 02:22

AnOminous: "...At today's level of ~387 ppm, allowing a lag-time of 10 years for sea temperatures to respond, most reefs world-wide are committed to an irreversible decline. Mass bleaching will in future become annual... [at] 450 ppm (due to occur by 2030-2040...) ... will cease to be large-scale nursery grounds for fish... [at] 600 ppm ... domino effects will follow, affecting many other marine ecosystems. This is likely to have been the path of great mass extinctio
AnOminous: "s of the past, adding to the case that anthropogenic CO2 emissions could trigger the Earth's sixth mass extinction. ...Prior to the industrial revolution, absorption and release of CO2 has risen from ~280 ppm to today's level of ~387 ppm ... increasing at a rate at least 100 times faster than has occurred naturally for at least the past 650,000 years."
AnOminous: "...Efforts at emissions reductions have thus far been limited in magnitude and weak in implementation, and it is critical that this situation is reversed to enable rapid and dramatic cuts. ... cumulative carbon emissions to date have already committed atmospheric CO2 to remaining above 330 ppm for at least the next millennium..."
AnOminous: NEXT MILLENIUM.
AnOminous: "...carbon dioxide sinks in addition to strong cuts to CO2 emissions ... critical to consider all possible benefits and limitations and employ great caution ... [as] some large scale carbon dioxide removal options ... require proof of their effectiveness and may risk serious side effects."
AnOminous: "...climate geoengineering options, which involve a reduction in the amount of solar radiation absorbed by the Earth, will have no effect on ocean acidification."
AnOminous: OH DID I MENTION ACIDIFICATION?
AnOminous: ACID OCEAN. NOT FUN.
AnOminous: more on rates of adaptation to changing pH (spoiler: it doesn't look good)
AnOminous: "...this time humanity will have been the cause and also one of the species to suffer. The extreme gravity of the current predicament is now widely acknowledged..."
AnOminous: And yet, ten years on, the only significant advancement in human behaviour is due to a global viral outbreak eliminating economic and social activity.
AnOminous: Ten years on, the only significant advancement in human behaviour is due to a global viral outbreak eliminating economic and social activity.
AnOminous: global viral outbreak
AnOminous: one of the many alternative risks formerly predicted as consequent of general increase in world temperature.
AnOminous: If you find any world leader speaking drivel about resuming business as usual or climate change conspiracy/hoax, stuff a sock firmly in his mouth.
AnOminous: Then apply the duct tape and call Uber.
AnOminous: I'm sorry. I seem to have lost 'civilised discourse'.
AnOminous: to be fair, some progress has been made in deployment of renewable resources, and even of language about the 'debate' (gufaw) but more than offset afaik by the growth in demand for non-renewable resources and use of cement, in asia mostly i guess
AnOminous: which is why it's important to try to move the economies forward in an appropriate direction given this useful hiatus
AnOminous: aka ...while you're down there... (rechump)
AnOminous: not wanting to add further impediment to reconstructing the economy, but the point being that government intervention is now a given in so many areas it was previously a no-go, and some sectors or ways of working will remain non-viable for the foreseeable future, and perhaps beyond
AnOminous: in fact, it ought to be obvious but somehow ain't, any genuine need for change should be capable of driving economic activity ... if it isn't, it's your government that is broken
AnOminous: i can't even explain that in more words.

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