Most members of the group.
----- Original Message -----
From: Peter Read
To: [email protected] ; [email protected]
Cc: [email protected] ; geoengineering
Sent: Wednesday, September 02, 2009 3:42 PM
Subject: [geo] Re: Hawaii Saved by Shear Luck Again
Re "We tend to focus on the Atlantic because that's where most of us live."
Most of us Japanese, Koreans, Chinese, Philippinos, Vietnamese, Indonesians,
Micronesians, Ozzies, Kiwis, etc live on the Pacific
We may not have as much money but there are more of us
Oh, and Californians, Chileans, Ecuadorians, etc too for that matter, but
that's not where the cyclones land
Peter
----- Original Message -----
From: Andrew Lockley
To: [email protected]
Cc: [email protected] ; geoengineering
Sent: Thursday, September 03, 2009 12:05 AM
Subject: [geo] Re: Hawaii Saved by Shear Luck Again
I don't think it's fair to say that we couldn't increase the number of
hurricanes. I'm sure the techniques we've thought of will have counterparts
which can trigger or power-up storms.
A
2009/8/17 Alvia Gaskill <[email protected]>
Most of the tropical cyclone activity is in the Pacific. We tend to focus
on the Atlantic because that's where most of us live. Stopping or
reducing
Atlantic hurricanes would have only a small impact on the global heat
transfer budget. Stronger storms and storms that sit over the same area
for
longer periods of time or larger storms in size, even if the winds are
weaker would all move more water around. While most of the poleward
transport is done out in the open ocean as storms recurve northward, those
that make landfall also carry their moisture and associated heat energy
poleward as they are caught up in weather fronts.
It was discussed here recently that reducing or eliminating hurricanes
would
cause more winter storms and implied this might be a negative consequence
of
doing so. If true, this would show that some of the energy that the
hurricanes would have taken poleward winds up there anyway in the form of
other weather systems as the overall ocean atmosphere system attempts to
redistribute tropical heat accumulated during the summer. If the same
amount of heat energy is moved this way as by the hurricanes, then
eliminating hurricanes would not have adverse consequences. In other
words,
would you rather be hit in the face with a baseball bat 6 times a year
(landfalling hurricanes) or have marshmallows thrown at you every week
from
November through March (winter storms)? Further investigation of this
would
be needed to quantity the relative risks if hurricane mitigation is
possible.
Only about 10% of all tropical systems form below the equator and most of
these are relatively weak storms. Note also that most of the land area is
above the equator, so the two hemispheres have different responses to the
same heat energy inputs. The impact of the variable heat transfer from
tropical systems on hemispheric climate change has not been determined,
but
can be expected to be a minor contributor as they still only affect a very
small percentage of the overall ocean. There would be no way to increase
the number of such storms. The number of waves that emerge from Africa
during the Cape Verde season (late June to early October) seems to be
fixed
at about one every 3 days and intensification is dependent on many
factors.
----- Original Message -----
From: "dsw_s" <[email protected]>
To: "geoengineering" <[email protected]>
Sent: Monday, August 17, 2009 6:06 AM
Subject: [geo] Re: Hawaii Saved by Shear Luck Again
Do stronger storms mix water deeper? (It seems obvious that they
would, but lots of things seem obvious and aren't true.) If so, it
would seem that having more weak storms would re-churn the same
thinner layer of water more often, transporting less heat toward the
poles than if fewer big storms mix the heat deeply.
There's also the strong asymmetry between northern and southern
hemispheres. It may be that decreasing storms in one hemisphere and
letting them increase in the other could help with global sea level
and global average temperature.
On Aug 17, 3:24 am, Mike MacCracken <[email protected]> wrote:
> In fact, Kerry Emanuel and students has a hypothesis that increased
> tropical
> cyclone activity (so number and or power and/or duration) and consequent
> vertical stirring of low latitude ocean areas is essential to providing
> the
> extra meridional energy flux to explain how the Cretaceous can be so
warm
> in
> the polar regions without the tropics being too much warmer.
>
> Mike MacCracken
>
> On 8/16/09 2:38 AM, "global_frozing" <[email protected]> wrote:
>
>
>
> > Will it be right to say that hurricane is the process of moving heat
> > up and out, so in fact the hurricane mitigation will work for global
> > warming, not against it?
> > If it so then better try to provoke the typhoons in the right places
> > than try to stop them or weaken them.
>
> > Aleksey
> > globalfrozing.com
>
>
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