The 50×30 coalition is an alliance between cryosphere and emissions research institutions, and governments that have accepted the scientific necessity to reduce emissions 50% by 2030; in order to prevent cascading and irreversible damage, on a planetary scale, from the impact of greenhouse gas emissions on the cryosphere.
Because of cryosphere, carbon neutrality by 2050 is not enough: the way we get there matters. Overshoot of the 1.5°C goal cannot be considered a viable or safe option, from either an economic or social standpoint. This is because much of the Earth’s polar and mountain regions – whether glaciers, snowpack, permafrost, sea ice, polar oceans and seas, or the great polar ice sheets – react directly to peaks in temperature and carbon dioxide emissions.