the very active hurricane season of 2008 - refreshing
our memories of 2005 (Katrina, Rita, and Wilma) and 2004
(Charlie, Frances, Ivan, Jeanne) - there is renewed
interest in deploying Atmocean upwelling pumps to cool
the upper ocean and reduce hurricane intensity.
have used the GFDL coupled ocean-atmosphere tracking & intensity
model used by National Hurricane Center to model the
effects on intensity attributable to cooling the upper
ocean. From this we have developed the following deployment
Atmocean pumps in the path of the hurricane.
- Cover an
area 150km square.
area covered by the pumps begins offshore where at
least 10 degrees C. colder water is found (typically
a minimum depth of 75-100 meters).
are deployed 24 to 36 hours in advance.
the hurricane generates ever-increasing waves, more
cold water is pumped as the storm approaches, resulting
in overall cooling by about one degree C. - enough
to lower peak winds 5% to 20%. Since hurricane damages
are proportional to the cube of windspeed, losses could
be reduced by 15% (e.g. 100mph reduced to 95 mph) to
49% (100mph reduced to 80mph).
in 2005 and this year, a portion of the Gulf Stream
spun off and formed a large eddy of very warm, deep
water in the Gulf of Mexico. If an approaching storm
has a well-formed eye, low wind shear in the upper
atmosphere, and crosses this warm eddy, rapid intensification
is likely. Therefore, a further strategy is to deploy
Atmocean pumps weeks ahead of time in the warm eddy
to reduce its heat content and mitigate against rapid
intensification. We hope to conduct further modelling
of this strategy in the near future.
discuss in more detail how Atmoceanâ€™s technology
might help reduce hurricane intensity, please contact
Philip W. Kithil, CEO, at [email protected]