ENV100H1 Lecture Notes - Lecture 3: Virgin Earth Challenge, Ocean Acidification, Solar Radiation Management

• School: UTSG
• Department: School of Environment
• Course: ENV100H1
• Professor: Simon Appolloni

Document Summary

To keep the sun rays out, to decrease co2 concentration. Sulphur into air acid rain further ozone depletion. Adding iron into ocean could disrupt ocean ecosystem. Eg. if we used stratospheric sulfur but then volcano eruption makes the world too cold. Virgin earth challenge to pull carbon out of the atmosphere. Exposure to pesticide (neonicotinoid) increase mortality lower bee colony. Ddt disrupts normal calcium build up eggs too fragile. Eagle at the top of food chain toxic accumulated listed as endangered. Renewable costs has gone done cheaper to purchase. Norway relies on 100% mix of hydro, biomass and solar. Dam building can cause problem though ( water can go over dryland when not controlled properly) Still issue related to gird access, intermittency and storage, but being addressed. Geoengineering is where the risk lies; (a scrubber should pose no issue) Normally, co2 is required to build the shell. More heat ocean absorbs the heat.