Why have category 4 and 5 hurricanes doubled in the last 30 years?

Question

I know it has somthing to do with global warming, but what has global warming got to do with it?

Answer 1

'The first period, between 1900 and 1930, saw an average of six major Atlantic storms annually, of which four were hurricanes and two were tropical storms. From 1930 to 1940, the annual average increased to 10, consisting of five hurricanes and five tropical storms. During the final study period of 1995 to 2005, the average reached 15, of which eight were hurricanes and seven were tropical storms.'

Science Daily, 2007

In 2005 their were 26 tropical storms in the Atlantic
Marine Photobank, 2007

Although this may be true, scientific opinion says that although the increase since 1960 is significant, it could be contributed to multi decade variability. They go on to say that the trend would need to keep increasing for anthropogenic forcing to be recognized as the residing cause of increase.

Their both sides of the argument. What does that make me a left right wing politician. No a freaking scientist. Any scientist would tell you the same thing and if they didn't they would not be a real scientist. The evidence is mounting for the case for global warming but if both parties (left right) believers and non believers just took a step back and looked at the scientific evidence and left politics and religion out of it they may be able to make some sence of the situation.

Dont just jump on a band wagon (for either side) look carfully and dont hide behind any one article or report but look at them collectivly.
In my opinion climate change is caused by anthropogenic carbon and methane emissions. But that is my opinion and not a fact. The fact is in the next few years we will know for sure but by then it will either be too late or approching too late. Arctic sea ice melt has already reached levels not predicted for another ten years so i would take the precautionary principle and lower emissions just incase we are causeing it. We are fortunate enough and will not die if we adopt worlds best practice energy efficieny and change to green power generation sources.

Answer 2

You know for a fact that global warming is responsible?

That makes you smarter than all the climatologists in the world. You should be giving lectures.

If you chose a different statistic, like there have been more hurricanes from 50 to 100 years ago than in the last 50 years, then you get the idea that global warming doesn't affect the frequency of hurricanes.

Answer 3

I'm not sure about that fact, but global warming could raise the number of high category hurricanes, because hurricanes grow and are powered by warm water, thus global warming causes warmer temps and waters.

Answer 4

Because there was a hurricane minimum 30 years ago. Go back to the 1930's and you'll discover that there were more cat 4 and cat 5 hurricanes that hit the US mainland.

By being selective in the years, you can make "global warming" look like it's getting worse when in reality there is no difference in the climate over time.

This tactic is often used by people who want to instill fear in the unknowing, and is taken as a sign of pending doom by the unknowing. You fell into a trap.

Answer 5

Global Warming silly.

Answer 6

The temperature of the oceans has risen one degree Celcius.

1. There are 326,000,000 cubic miles of water on this planet
2. 1 calorie is defined as the amount of energy necessary to raise 1 cc of water 1 degC
3. 1 MegaTon of TNT = 10^15 calories
4. By requesting the information from the NOAA library I found out that the average yield of all the atomic bombs ever exploded was 1 MegaTon (yield dropped significantly as delivery systems, i.e. rocket guidance systems, improved)

So:

326,000,000mi^3 X (5280 ft/mi X 12 in/ft X 2.54 cm/in)^3 X 1calorie/cc of H2O/ degC
______________________________________...

10^15 cal/MTon of TNT

=

" A one degC rise in the temperature of the oceans is the equivalent energy to 1.3 BILLION one MegaTon atom bombs. That has already happened and is being expressed as more severe weather. The temperature is projected to rise 5 degC in the next 50 - 100 years. That is the equivalent of one atomic bomb for every man, woman and child alive on the planet today."

Answer 7

You don't have any idea what you are talking about. The frequency and intensity of hurricanes has not changed since we have been keeping track on them.

Answer 8

I thought we were having fewer? I watched a show on the weather channel and that is what I understood.