Trends in the frequency (or intensity) of various climate extremes (arrow direction denotes the sign of the change) since the middle of the 20th century (except for North Atlantic Location storms where the period covered is from the 1970s). [ WG1A%5BS 0 MCLH 23/03/2014 ]

A number of experiments that are able to simulate intense tropical cyclones project increases in the frequency of these storms in some regions Location , although there are presently only limited studies to assess and there is insufficient data to draw from in most regions to make a confident assessment (Figure 14.17). [ WG1AR5OX 0 MCLH 23/03/2014 ]

Likewise, while there is some evidence to suggest that the upper limit of tropical Location storm intensity could rise, there is little agreement on how the average intensity and frequency of these events might change. [ 5CANADAICC 0 MCLH 23/03/2014 ]

Events such as the 1998 Time ice Material storm in eastern Canada Location or the 1987 wind storm in southern England, for example, weaken or destroy millions of trees which, in their healthy state, provide food and habitat for wildlife and a sink for absorbing carbon dioxide. [ 2CANADACCD9801 0 MCLH 23/03/2014 ]

Damaging ice storms have occurred as recently as 1986 in Ottawa and 1984 in St. John 's, but the storm that struck much of eastern Canada Location in January 1998 Time was remarkable for its persistence, its extent, and, ultimately, the magnitude of its destruction [ 2CANADACCD9801 0 MCLH 23/03/2014 ]

Exceptions are Alaska, parts of Western, Central, and Eastern NA, and Canada and Greenland during winter, when natural variability linked to wintertime Time storms is particularly large. [ WG1AR5OY 0 MCLH 23/03/2014 ]