href="http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17617">
Dust
Dampens Hurricane Formation
face="Helvetica, Arial, sans-serif">
I'm hardly an expert, but it appears that there is some evidence that
the amount of dust in the air over the Atlantic is a factor in
determining the severity of the hurricane season. More dust =
less ocean warming. Like so many things, this is hypothetical:
face="Helvetica, Arial, sans-serif">Using dust observations
collected by the Ozone Monitoring Instrument (OMI) on NASA’s
Aura satellite, they found that the Sahara sent an unusually large
amount of dust over the Atlantic during the 2006 hurricane season. By
blocking incoming sunlight, the researchers say, the dust could have
caused the widespread cooling of the subtropical North Atlantic Ocean,
subduing hurricanes. The researchers don’t yet know how great
a part dust played in derailing hurricane formation in 2006, but they
hope their work will fuel more studies.
All those satellites are good for something. Could there be
a practical application to this? That's hard to imagine, in
the sense that it would be tough to deliberately generate more dust in
order to curb hurricanes. But it could help with modeling for
the sake of prediction.
- Log in to post comments
More like this
Storm World: Hurricanes, Politics, and the Battle Over Global Warming I've been putting off posting my review of this book until just the right moment. Perhaps that moment is now, with the juxtaposition of a serious storm ... hurricane Gustav ... arriving in the vicinity of New Orleans and the…
Storm World: Hurricanes, Politics, and the Battle Over Global Warming I've been putting off posting my review of this book until just the right moment. Perhaps that moment is now, with the juxtaposition of a serious storm ... hurricane Gustav ... arriving in the vicinity of New Orleans and the…
This is early in the year for Atlantic hurricanes, though we are already up to "D" in named storms. The current mane floating around in the Atlantic is "Dorian" which the National Weather Service is shortly going to rename "Dorian The Zombie." Dorian was a named tropical storm several days ago,…
This year's Atlantic Hurricane season will be stronger, forecasts suggest, than that of the previous two years, and stronger than the average year.
The Atlantic Hurricane Seasons starts on June 1st. But, there was a hurricane that happened already, either late in last year's season or very early…
So, is the dust blown in by El Nino?
By the way, here is a news story about a computer simulation that suggests that wind shear in a warmed world may decrease the number of hurricanes.
>All those satellites are good for something. Could there be a practical application to this?
Are you actually skeptical about the usefulness of satellite observations of Earth? Frankly, since the inception of "weather satellites," in the 1970s, our understanding of weather and climate has exponentially increased. A major contribution from the satellites is for validation of ideas and models of large-scale circulations, and another is the ongoing and ever increasing quantification of the atmospheric composition and thermodynamic structure, which is especially important in otherwise data-sparse regions (e.g., the entire southern hemisphere!).
Hm. Provide cheap airfare to Western Africa, and cheap prices for Sahara dune buggy races, and market the heck out of them as a new fad in adventure travel. That'd help increase the amount of dust kicked into the air.