Michael Tjernstroem – Is there anything that can be done?

Global warming and the Baltic:Is there anything that can be done?Michael TjernströmDepartment of Meteorology & Bolin Centre for Climate Research,Stockholm universityWhat happens to the climateClimate chaos– and how it isportrayed in society?Climateanxiety... and in science.~1C“Global warming”... and in the Baltic region(e.g. Sweden)Year-12% perdecadeArctic Sep-tember sea iceGreenland ice-mass change(Gigatons)Antarctic ice-mass change (Gigaton)Sea level Baltic (w/o land rise)riseGlobalClimate models help us understand why...All knownfactors All knownfactors except greenhouse gasesIndividual calculationsObservationsAverage ofall calculationsThere is currently no scientific explanationfor the observed global warming that does notconsider the increased greenhouse gasconcentrations!And the futurelooks bleak...And the Baltic by theend of this centuryAnd the Baltic by theend of this centurySummary● Increasing temperatures, especially in winter and inthe north (max ~6 °C)● Increased precipitation, especially in winter and inthe north (10-20%); possibly summer watershortage in the south● increased precipitation & temperature => less snowand more rain, w/ rain-on-snow in north, increasedrun-off with new seasonality and risks for flooding● Diminished sea ice, but large inter-annual variability● Rising sea levels and coastal erosion in the southThe Paris accord:Climate Action TrackerLimit global warming towell below 2°C, and topursue efforts to keepwarming to 1.5°C.Nations commit tovoluntary emissionreductions as best theycan, but in differentways.Probably a necessity foran agreement but stillhas to be fullyimplemented.Thanks for listening!