Hurricane killers

Stopping hurricanes is science.

Wow, I've been away from science blogging for a while. I've been concentrating on finishing a book (writing) and another new writing opportunity.

But today's article in the Birmingham News about stopping hurricanes in their tracks is intriguing. Software wiz and zillionnaire Bill Gates is seeking patents on a gizmo that would suck the warm water from the surface and replace it with cool water from the depths.

I just hope I'm not floating in a sailboat nearby when the big suck begins.

There are other problems I see with this, but I am sure these things will be taken into account. My main concern is that the rain from tropical systems, hurricanes included, often saves the southeast from drought conditions. Now if his idea just reduces the killer storm to a tropical storm and we still get the rain, then maybe OK.

And I understand his concern that climate change may be leading to more powerful and more frequent storms. So getting ahead of the game is good.

"This type of technology is not something humankind would try as a 'Plan A' or 'Plan B, ' " he (Paul Holman) wrote. "These inventions are a 'Plan C' where humans decide that we have exhausted all of our behavior changing or alternative energy options and need to rely on mitigation technologies."

Lots of people on blogs and on al.com are noting that concern about weather patterns and heat transfer and such and are warning not to mess with Mother Nature.

Gravity Waves

Gravity Waves are Science. Uncommon, but science. I remember we had this happen back in the late 90's when I lived on the edge of Shades Mountain and we thought we were going to blow off the crest.

The National Weather Service gives this definition:

Gravity Wave
A wave created by the action of gravity on density variations in the stratified atmosphere. A generic classification for lee waves, mountains waves, and many other waves that form in the atmosphere .

Here is a video of such an occurrence.



What happens is there is a large area of rain, a thunderstorm. On the back side of the storm, some drying occurs in the middle layers of the atmosphere. An updraft of air occurs and this disturbs the atmosphere. The air runs into a stable air mass and is redirected downward. When those winds near the surface, they spread out, producing the high winds that cause the damage.

Gravity waves can really be serious when they occur in conjunction with a tornado. In April 1998, the tornado that caused so much damage and killed 32 people in and around Oak Grove near Birmingham was a relatively weak tornado until it was hit by an undular bore, a type of gravity wave, which amplified it into an F5 killer.

Gravity waves are difficult to predict. The damage can be substantial. Many people had it worse than us, we just had a neighbor's tree fall into our yard.



But another neighbor had this happen. Remarkably, there is minimal damage to the house.