GG102 Lecture Notes - Lecture 7: Montreal Protocol, Overconsumption, Physical System
Document Summary
Climate change: using more planets than we already have over-consumption, high energy use (fossil fuels) 2018 was the fourth-warmest year on record (1. 0 degree celsius warmer than in pre- industrial age) Global resource use is set to explode (more are escaping poverty) Long-term change in weather patterns (i. e. , temperature increase: average: 30 year observation period = climate, can have natural or human causes. I. e. , changes in the solar output (natural: mainly refers to human-induced changed. What is global warming: increasing temperature, ever since 1986 in which the global temperature has never been colder than the average. Primarily caused by greenhouse gases: co2 -> fossil fuel burning (rise in parallel with temperature, methane ch4 -> meat production, nitrous oxide n2o-> fertilizer, cfcs -> industry (sold in the black market) Montreal protocol (decreasing cfcs: acts like a blanket -> unable to release heat back into space, they absorb gas and traps it on earth, china produces the most amount of ghgs.
