Table 1: Examples of cyclic variation in meteorological and proxy weather records
Southern oscillation
3-3.8
6
10-12
Central England temperature
3.1
14.5
23
76
South African rainfall
3.5
10-12
18
21
South American rainfall
3.8
7
20
Extreme 1 hr rainfall (UK)
7.2
10.8
20
50
US east coast temperature
9
20
North Atlantic pressure
7-9
14
50-90
Atlantic hurricanes
9.3
11
15
22
52
Beijing rainfall
9.9
18.6
56
84
126
US rainfall
11
18.6
East African Lakes
11
Nile Floods
18.4
53
77-88
Global air temperature
22
65-70
Galapagos corals
3
6-8
11
17
22
34
Oman speleothem
3
7.5
24
87
134
205
779
Chinese speleothem
3.3
5-6
10-12
14-18
133
194
Zimbabwe tree rings
3.4
9-10
20
35-44
70
130
Geological sediments
5.6
11
22
90
200
Greenland ice cores
6.3
11
20-22
90
200
1470
Fennoscandian tree rings
11
31-34
86-100
US drought index (tree rings)
18.6
22
90
Finnish tree rings
23
30
90
Irish speleothem
78
169
625
Bristlecone pine tree rings
114
208
667
1400
Ocean sediments
550
1500
Table constructed based on data from; Alexander, W. (2007), Burroughs, W.J. (2003), Mason P.J. (1998), Mason P. J. (2006a), Ruzamaikin A. et al. (2006) and the Kafue Gorge Lower Hydroelectric Project, Climate Change Impact Draft Report (2009).
Sign up for our weekly news round-up!
Give your business an edge with our leading industry insights.
