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In summary, neither our model projections for the 21st century nor our analyses of trends in Atlantic hurricane and tropical storm counts over the past 120+ yr support the notion that greenhouse gas-induced warming leads to large increases in either tropical storm or overall hurricane numbers in the Atlantic. A new modeling study projects a large (~100%) increase in Atlantic category 4-5 hurricanes over the 21st century, but we estimate that this increase may not be detectable until the latter half of the century. Therefore, we conclude that despite statistical correlations between SST and Atlantic hurricane activity in recent decades, it is premature to conclude that human activity–and particularly greenhouse warming–has already caused a detectable change in Atlantic hurricane activity. (“Detectable” here means the change is large enough to be distinguishable from the variability due to natural causes.) However, human activity may have already caused some some changes that are not yet detectable due to the small magnitude of the changes or observation limitations, or are not yet properly modeled (e.g., aerosol effects on regional climate). We also conclude that it is likely that climate warming will cause hurricanes in the coming century to be more intense globally and to have higher rainfall rates than present-day hurricanes. In our view, there are better than even odds that the numbers of very intense (category 4 and 5) hurricanes will increase by a substantial fraction in some basins, while it is likely that the annual number of tropical storms globally will either decrease or remain essentially unchanged. These assessment statements are intended to apply to climate warming of the type projected for the 21st century by IPCC AR4 scenarios, such as A1B. The relatively conservative confidence levels attached to these projections, and the lack of a claim of detectable anthropogenic influence at this time contrasts with the situation for other climate metrics, such as global mean temperature. In the case of global mean surface temperature, the IPCC 5th Assessment Report (2013) presents a strong body of scientific evidence that most of the global warming observed over the past half century is very likely due to human-caused greenhouse gas emissions.
In summary, neither our model projections for the 21st century nor our analyses of trends in Atlantic hurricane and tropical storm counts over the past 120+ yr support the notion that greenhouse gas-induced warming leads to large increases in either tropical storm or overall hurricane numbers in the Atlantic.
why do you automatically blame global warming for everything.
I am confident that already have google.
Why do I have to prove its not global warming.
Then, because this is the NOAA afterall, and they do have to support the government policy supporting the AGW theory, they go ahead and cite "models" that show projected increases. Even though, they have already concluded that global warming does not lead to increased frequency or intensity, they have to "model" as though it will lead to increased frequency or intensity.
originally posted by: TiredofControlFreaks
a reply to: mbkennel
Really - prove the bit about statistical analysis to predict the weather in the "future".
Every prediction so far has failed.
originally posted by: TiredofControlFreaks
a reply to: Greven
And if you park your car under trees???
You haven't even looked at the role of clouds in all of this mess.
Further, look at the history of Irish climate change...
irishenergyblog.blogspot.ca...
Do you notice a similiarity to the history of climate change at all. That climate patterns change....from cool to hot and back again with astonishing regularity?
originally posted by: TiredofControlFreaks
a reply to: Greven
Actually, its not that simple. Clouds are actually very complex. Thin, high clouds tend to cause cooling. Low thick clouds tend to cause heating. Didn't I just read that high, thin clouds are accumulating in the tropics? And low thick clouds are accumulating in the poles?
Its all very complex and to be honest, it is clear that some forcings are missing from the climate models (clouds, ocean currents)
And its likely that the role of ocean currents (some of which, like the PDO were only discovered in the mid-1990s, long after climate alarmism began)
I said "Do you not have google on your computer". Can you not google weather events before you decide its not global warming?
While satellite images of the Arctic clearly show that sea ice in the region has been on a steady decline since those images began in 1979, the relatively short span of that history has been seized on by some climate denialists to discount its significance in concluding humans are warming the planet.
Now, scientists have compiled the most detailed study to date of sea ice records going back more than a century and a half. The data shows that the rapid meltdown that satellites have been documenting since 1979 is unprecedented since at least 1850 and coincides with the buildup of heat-trapping greenhouse gases in the atmosphere from burning fossil fuels.
Arctic sea ice has not been at levels as low as today's for at least 5,000 to 7,000 years, according Julienne Stroeve, a researcher with the National Oceanic and Atmospheric Administration (NOAA) who was not involved in the study. "It may have been sometime during the mid-Holocene, based on driftwood found in Greenland that came from Siberia," she said. "Some other studies have suggested at least 800,000 years."
originally posted by: TiredofControlFreaks
...
In 34 pages, I have not heard even one CAGW supporter admit that individual weather events cannot be used to either prove or disprove CAGW, even though you all pretend to be experts,
You may all have more scientific knowledge then me. I don't know. But you are all demonstrating that you are willing to accept untruths (lies) in your pursuit of being right.
This makes all of you, unreliable and untrustworty. Not one of you had the courtesy to speak a very very simple truth. That individual weather events cannot prove or disprove CAGW.
Worst, you have attacked me for daring to speak this simple truth.
You have amply demonstrated that truth is NOT part of your agenda. Why would anyone believe you now?
Tired of Control Freaks