ENV100Y5 Lecture Notes - Lecture 27: Lake Suwa, Paleoclimatology, Ice Core
69
ENV100Y5 Full Course Notes
Verified Note
69 documents
Document Summary
The climate system is even more complicated, because of feedbacks exist in environment system but climate system in particular: positive feedback cycles (self-reinforcing) Output feds back in and reinforces the direction everything was moving in. A vicious cycle of more more water vapor = more evaporation and more heating, etc. Example: warming evaporation of seawater more water vapour in atmosphere more warming: negative feedback cycles (self-limiting) Homeostatic feedback start with same premise and works in a way to remain homeostasis heating of surface triggers albedo and cools surface back down. Example: warming evaporation of seawater more cloud cover blocks incoming radiation cooling: these feedbacks interact in complex ways. It is complicated and non-linear so we don"t k(cid:374)ow whether it will (cid:272)ool (cid:373)ore or heat more. We do(cid:374)"t k(cid:374)ow a(cid:271)out what t(cid:455)pe of (cid:272)louds will for(cid:373) Example: aerosols and clouds can have either a warming or cooling effect. Shows that (cid:272)o(cid:374)ditio(cid:374) of at(cid:373)osphere has(cid:374)"t (cid:271)een going on for too long.
