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Scientist Are Working to 'Steer' Hurricanes
E++99 writes "In the wake of Katrina, two teams of climate scientists have been working to steer hurricanes. Both teams are using the technique of removing power and speed from strategic points in the hurricane, effectively refracting its path. The American team is approaching this by warming the areas of the tops of the hurricane clouds, either by dropping ash to absorb heat from the sun, or directly beaming microwaves on those areas from space. The Israeli team is taking the approach of cooling the bottom of the hurricane by releasing dust along its base."
CBC just did a program on this last night:
http://www.cbc.ca/doczone/hurricane.html/
The linked page includes a program excerpt.
Conclusion: none of the *nine* different methods considered will work on their own.
Used all at the same time, they might make a difference.
I think the lawyers got this one right. There's no way any legal counsel would ever approve something like this. WEAKENING, perhaps, but not steering. I know I would sue if someone steered the next Katrina into my house.
We're not exactly standing on the beach and yelling "You shall not pass!" It's more like we're throwing it's steering out of alignment. Small changes applied appropriatly should have drastic effects on course, landfall strength, etc. It's part of what makes weather so hard to predict. Of course, that also means to we need to prepare for unforseen consequences...
Demented But Determined.
Seems like the link you provided has issues (I.E. bad rendering, video link bad, etc.) because of the forward slash after it. Just remove the slash, and your good :)
Not really.
Cyclones have insane energy levels, true, but they are still storms and winds, and they obey natural laws. One of these laws says that they drift based on pressure differentials in the surrounding area - ie, if the air pressure is higher to the north than the south, the cyclone will head south.
Air pressure is related to temperature; hot air rises, which will make the air pressure go down, while cold air sinks, making the air pressure go up (*warning: highly simplified explanation!*).
Besides, this technique is what already causes cyclones to break up - when they hit land, the temperature grade becomes very uneven, because land absorbs heat differently to water. This creates an asymmetrical bulge or dip in the cyclone - which is bad for what is basically a rotating disk of air. This asymmetry forces the cyclone to rip itself apart - usually by sending storm systems deep inland. Nor does it take a huge difference to do this - cyclones are chaotic, unstable systems: science speak for saying that a small push can send it into a different state.
For an easy analogy - imagine a motor biker rider. The motor bike, going at 100MPH, has insane amounts of kinetic energy, compared to what the rider could normally attain. But the bike is an unstable system - a small nudge of energy (rider shifting balance, for example) can make the bike change direction. Of course, get this wrong, and disaster strikes - too much energy causes the bike to fall over.
"Software is too expensive to build cheaply"
Yes... never mind the fact that a lot of hurricanes that assault the Eastern coast of the Americas (and Caribbean islands) form off the west coast of Africa and then cross the Atlantic towards us.
I don't like to sit. Sitting is for people who like to sit.
Hurricanes, while destructive to the coastline where they make landfall are beneficial in the long run. Most hurricanes that come ashore in the Gulf of Mexico are beneficial to the Mid-Atlantic states. Because a few days after the hurricanes come ashore, the remnants of the storm move east and bring needed rain to the mountain regions of North Carolina, Tennessee, Virginia, and West Virginia. The rainfall here helps the rivers and tributaries which move eastward towards the Chesapeake Bay.
When will man learn to leave nature alone? Don't want destruction from hurricanes? Don't build on the coastline.