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Here, we relate a homogeneous record of Atlantic tropical cyclone activity based on storm surge statistics from tide gauges to changes in global temperature patterns.
"If the temperature rises an additional degree, the frequency will increase by 3-4 times and if the global climate becomes two degrees warmer, there will be about 10 times as many extreme storm surges. This means that there will be a 'Katrina' magnitude storm surge every other year," says Aslak Grinsted and he points out that in addition to there being more extreme storm surges, the sea will also rise due to global warming. As a result, the storm surges will become worse and potentially more destructive. Read more at: phys.org...
SURGEDAT is already providing surprising insights into storm surge climatology and the relationship between hurricane landfall, storm intensity and storm surge levels. For example, the database has blown away the stereotype that wind speed relates directly to storm surge level. Keim and Needham found that some tropical storms that produce only moderate wind speeds according to the Saffir-Simpson Hurricane Wind Scale can produce unexpected levels of peak storm surge due to their large and slow-moving nature.
Certain areas prone to hurricanes may be more vulnerable from storm surge than others. SURGEDAT revealed that, rather contrary to common sense, storm surge height may be more related to the amount of time a hurricane spends over open water before striking a location than to number of hurricane strikes in a particular location. Despite the fact that the Texas, Louisiana and Mississippi coasts do not sustain as many hurricane strikes as many locations in Florida and Alabama, these coastlines generally observe the greatest storm surge magnitudes according to SURGEDAT.