Health Sciences 3400A/B Lecture Notes - Lecture 18: Arctic Sea Ice Decline, Climate Change Mitigation, Arctic Ocean

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 3400A/B
• Professor: Melanie McPhail

Document Summary

Lecture 18 case study: climate change & health policy. Real; it is happening and there is an overwhelming evidence: part of the reason why the tracker of climate change say it doesn"t exist is that there is climate that changes naturally over hundreds of years. According to nasa, the current trend that we"re in is not one of the regular cycles of changing temperature. Greater than 95% that the climate change is due to human activity. Humans are contributing to the effects of the natural change in temperature: global temperature rise. 2016 was the warmest year on record: warming oceans. The top layers of the first 700m of the ocean has warmed up to 0. 3 degrees since about 1970s. May not seem like a significant amount, but the ocean is a very delicate ecosystem so even a small change can have disastrous affects: shrinking ice sheets. All around the world: decreased snow cover.