GLY 102 Lecture Notes - Lecture 24: Hadley Cell, Ancient Art, Global Warming
26 Apr 2018
School
Department
Course
Professor
Lecture 24 Drought, Agriculture, and Society
Syria
- Currently fighting in a civil war
- Moe tha half of “yia’s populatio is o efugees
Drought -> farmers poor and hungry -> farmers migrate to cities ->
unemployment, overcrowding, poverty -> unrest -> war
How did climate change increase the likelihood or intensity of the Syrian
drought?
- Global warming changes the winds, bringing less moisture into Syria
o Warm air holds more moisture
o As the atmosphere warms, it will evaporate more water
o Therefore, areas that tend to get rain already will get more rain
o The areas that already lose moisture by evaporation will lose
more moisture
- Global warming increases evaporation rates from Syrian fields, taking
more moisture away from Syria
- Hadley cell expansion and increased land surface temperature
Not the first drought there
Climate change not the ultimate cause of uprising in Syria
The Sahara Desert, Africa
Ancient art found in caves across the Sahara shows a very different
environment than today
Oasis of Archei, Chad
find more resources at oneclass.com
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Document Summary
Mo(cid:396)e tha(cid:374) half of y(cid:396)ia"s populatio(cid:374) is (cid:374)o(cid:449) (cid:396)efugees. Drought -> farmers poor and hungry -> farmers migrate to cities -> unemployment, overcrowding, poverty -> unrest -> war. Global warming increases evaporation rates from syrian fields, taking more moisture away from syria. Hadley cell expansion and increased land surface temperature. Climate change not the ultimate cause of uprising in syria. Ancient art found in caves across the sahara shows a very different environment than today. The sahara desert is famous for oases, small spots of water that can support life. Saharan oases are groundwater areas leftover from the green sahara period. The sahara desert was not always a desert. From about 9ka to 5ka, the sahara was wet and rainy. Du(cid:396)i(cid:374)g the (cid:862)g(cid:396)ee(cid:374) aha(cid:396)a(cid:863) pe(cid:396)iod, (cid:449)ate(cid:396)-dependent animals and humans lived all across the sahara. The sahel, africa: a region of marginal habitability. Sahel mea(cid:374)s (cid:862)(cid:272)oast(cid:863) (cid:271)e(cid:272)ause du(cid:396)i(cid:374)g the g(cid:396)ee(cid:374) aha(cid:396)a, people settled o(cid:374) the coasts of the many lakes.
