Top Tweets for #450ppm
“Informa l’amico #RobertoCavallo…gran brutta notizia!
Secondo gli scienziati del clima, a #450ppm siamo a ‘#RischioEstinzioneSpecie’…(umana)”

Finally, point 3) - does #450ppm lock in 2°C?
Using standard climate sensitivity, stabilising at 450ppm CO2eq leads to ~1.2°C short-term and ~1.8°C longer-term (+ more in ~1000+yrs). Higher sensitivity/feedbacks could push this over 2°C, but it doesn't yet guarantee 2°C.
10/13
Reports are coming thick and fast. Time to think about what your company, your local government, your district council is doing about the climate emergency https://t.co/CpwjP1SFQL #climateemergency #450ppm
En menos de 300 años ha aumentado casi 50% el nivel de #CO2 en la #atmósfera. Estamos alcanzando niveles que no se veían hace 4millones de años. En el año 2040, siguiendo actual ritmo, habríamos llegado a #450ppm
#CO2 en Atmósfera es hoy >45% mayor q antes de EraIndustrial y aumenta >2ppm/año por nuestras emisiones. Niveles actuales son tan altos como hace 4millones de años cuando TemperaturaGlobal era 2-3°C mayor y #NivelDelMar era 7-25m más alto. #CambioClimatico https://t.co/v9NgtgB9HI

Within 40-50 years,we are at #2degree #GlobalWarming, with a #Co2 concentration of over #450ppm. A Co2 value that should not exceed #350ppm

My @DemocracyNow interview earlier today on #450ppm CO2 and #climatechange #HSCW http://t.co/dGKUIIZpcu
.@RaySuarezNews @climatebrad @davidaxelrod Aint seen nothing yet. Commit 2 #450ppm/>4F warming in a few years w/out policy action/leadership
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