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Originally posted by EvenParanoidsHaveEnemies
reply to post by bronco73
How would it become a desert? It has AMPLE precipitation.
Originally posted by poet1b
The odds of another Sandy hitting Manhatten in the next few years are pretty high
Originally posted by spyder550
I'm trying to remember the last time the NY subways filled up with water. It seems like it has been a while.
Observed records of Atlantic hurricane activity show a strong correlation, on multi-year time-scales, between local tropical Atlantic sea surface temperatures (SSTs) and the Power Dissipation Index (PDI) (Figure 1). PDI is an aggregate measure of Atlantic hurricane activity, combining frequency, intensity, and duration of hurricanes in a single index. Both Atlantic SSTs and PDI have risen sharply since the 1970s, and there is some evidence that PDI levels in recent years are higher than in the previous active Atlantic hurricane era in the 1950s and 60s.
Originally posted by poet1b
What was predicted, and what records are starting to show is that hurrican activity in the Atlantic is in fact increasing. It is only logical to speculate that this increase in hurricane activity will increase.
Hurricane forecasters remind us that a well-established climate pattern puts us in an ongoing era of high activity for Atlantic hurricanes that began in 1995. Since that time, more than 70 percent of seasons have been above normal, including 2012. Historically, Atlantic high-activity eras have lasted 25-40 years, with the previous one occurring from the mid-1930s until 1970. Several inter-related atmospheric and oceanic factors contribute to these high activity years, including warmer Atlantic Ocean temperatures, an enhanced West African monsoon, and reduced vertical wind shear.
And I would add that global temperatures spike after WW II, and could be an explanation for the high level of hurricanes in the 50ties.