2 
00:00:10,600 --> 00:00:18,000 
Monsoons are a pattern of rainfall that 
seems to be particularly sensitive to 

3 
00:00:18,000 --> 00:00:20,320 
global change because they are driven by 

4 
00:00:20,320 --> 00:00:23,639 
the temperature contrast between water and 
land. 

5 
00:00:24,730 --> 00:00:29,460 
Large scale changes in the 
climate can change these temperature contrasts,

6 
00:00:29,460 --> 00:00:36,180 
really change the patterns 
of rainfall that are to be expected. 

7 
00:00:36,180 --> 00:00:38,810 
More so than the normal storm kind 

8 
00:00:38,810 --> 00:00:41,980 
of rainfall that you get other parts of 
the world. 

9 
00:00:41,980 --> 00:00:46,950 
The American southwest is not usually
considered a monsoonal system, 

10 
00:00:46,950 --> 00:00:50,990 
but the rainfall there is very heavily 
impacted by the temperature 

11 
00:00:50,990 --> 00:00:55,100 
contrasts between the land (the desert)

12 
00:00:55,100 --> 00:00:58,500 
and the water temperature in the Pacific 
or the the Gulf. 

13 
00:00:58,500 --> 00:01:01,352 
The American southwest is in drought 

14 
00:01:01,352 --> 00:01:08,620 
today and we know from proxy data from the 
medieval time that there were droughts 

15 
00:01:08,620 --> 00:01:15,380 
in the American southwest that were vastly 
larger than anything we have experienced. 

16 
00:01:15,380 --> 00:01:18,414 
The dust bowl was a picnic compared to 

17 
00:01:18,414 --> 00:01:23,800 
the droughts that clobbered the classic 
Mayan civilization, for example. 

18 
00:01:24,900 --> 00:01:27,570 
The African Sahel, 

19 
00:01:27,570 --> 00:01:35,700 
according to Lynas' book, is expected to 
be impacted at about one degree C 

20 
00:01:35,700 --> 00:01:38,290 
of temperature change and is supposed to 

21 
00:01:38,290 --> 00:01:41,930 
get wetter according to the climate 
simulations. 

22 
00:01:41,930 --> 00:01:44,030 
The China highlands are supposed to get 
drier 

23 
00:01:44,030 --> 00:01:47,220 
at about two degrees of global 
warming. 

24 
00:01:47,220 --> 00:01:49,430 
The Asian monsoon is supposed to get 

25 
00:01:49,430 --> 00:01:52,720 
stronger and stormier under that two 
degree C 

26 
00:01:52,720 --> 00:01:53,230 
of warming. 

27 
00:01:53,230 --> 00:01:55,970 
Every place is cutting 

28 
00:01:55,970 --> 00:01:58,440 
a different deal with global 
warming. 

29 
00:01:58,440 --> 00:02:02,620 
It's not all the same impact. 
It varies from place to place.