Guest
On Sunday, September 1, 2019 at 12:22:37 PM UTC-4, John Larkin wrote:
The area was originally some kind of drainage basin for positively huge watershed. Not good for building residential, but excellent for construction of a shipping port, which was its original purpose, it was totally industrial. Not exactly sure of the time frame, but the booming expansion of the city infrastructure and the population boom was relatively recent, like past 40 years or something. They did have a system of buffer retention reservoirs, to hold excess water in the event of storms or floods, and buy time for natural drainage to remove the water and prevent flooding. But the system was corrupted by the greed of the real estate developers with lots of housing constructed in high risk areas and fudged estimates of their flood abatement efficacy. End result was of course gazillions of bucks of damage and looking for a federal taxpayer bailout to fix it.
Right, NOLA is pretty safe if the dykes are properly maintained. They'll probably need to be enlarged to account for sea level rise eventually.
On Sun, 1 Sep 2019 08:17:21 -0700 (PDT),
bloggs.fredbloggs.fred@gmail.com wrote:
On Saturday, August 31, 2019 at 10:56:20 PM UTC-4, Bill Sloman wrote:
On Sunday, September 1, 2019 at 5:19:33 AM UTC+10, John Larkin wrote:
On Sat, 31 Aug 2019 09:51:22 -0700 (PDT),
bloggs.fredbloggs.fred@gmail.com wrote:
On Saturday, August 31, 2019 at 10:36:58 AM UTC-4, jla...@highlandsniptechnology.com wrote:
On Fri, 30 Aug 2019 04:19:34 -0700 (PDT), Michael Terrell
terrell.michael.a@gmail.com> wrote:
Waiting to see what path Dorian will take.
Waiting for the county to decide if we have to evacuate, or if we are to shelter in place.
Waiting for yet another extended Power failure.
It figures that I will have a doctor's appointment during the upcoming mess.
It might not make land in Florida.
https://pbs.twimg.com/media/EDTWKADU4AIE38E?format=jpg&name=small
It's fun to watch the computer track projections. They are all new
every day.
(I'll regrain from commenting on computer climate projections.)
When I was a teenager, Betsy was scooting West towards Texas, and a
famous pompous NOLA weatherman assured us it would miss us. Then it
did a 90 degree turn to the north, and the eye passed over us late in
the night.
It's not going to make landfall there. But it is threatening a huge swath of coastline from north Florida all the way to North Carolina. The coastal wetlands there are really low elevation and serve as habitat for millions of birds and other wildlife, with more than a few species already critically endangered. So it's looking like it will be another environmental disaster.
But no different from what's been going on for thousands of years.
John Larkin hasn't got the message that the one degree Celcius of global warming that we've already puts 6% more water vapour into the atmosphere above the oceans, which is the energy store that drives hurricanes and other extreme weather.
That's not been true for the past few thousand years.
Since hurricanes depend on the existence of a large area of ocean that is warmer than 26C down to depth of about 50 metres, global warming opens out the area that can spawn them.
The modelling that has been done suggests that the extra area is going to translate into more intense hurricanes rather than more frequent hurricanes, which is going to make the consequences more severe than they have been for the past few thousand years.
John Larkin gets his information from Anthony Watts' denialist website, which isn't a particularly reliable source, even if it offers enough flattery to it's readers to keep John Larkin happy.
--
Bill Sloman, Sydney
Right, and all that water vapor makes the storm double damaging because of of it. Supposedly when the vapor precipitates out of the circulation, the rotation is damped due to some kind of conservation of momentum, which in practical terms means the storm tends linger over the area much longer. This is how they ended with 50 inches rainfall in Houston. The flooding was horrendous.
Many of the flooded houses in Houston were built in what was a
reservoir.
The area was originally some kind of drainage basin for positively huge watershed. Not good for building residential, but excellent for construction of a shipping port, which was its original purpose, it was totally industrial. Not exactly sure of the time frame, but the booming expansion of the city infrastructure and the population boom was relatively recent, like past 40 years or something. They did have a system of buffer retention reservoirs, to hold excess water in the event of storms or floods, and buy time for natural drainage to remove the water and prevent flooding. But the system was corrupted by the greed of the real estate developers with lots of housing constructed in high risk areas and fudged estimates of their flood abatement efficacy. End result was of course gazillions of bucks of damage and looking for a federal taxpayer bailout to fix it.
New Orleans is mostly below sea level. A hundred years of building
levees and pumping out groundwater and building ranch-style houses has
side effects. Hurricanes have been around forever.
Right, NOLA is pretty safe if the dykes are properly maintained. They'll probably need to be enlarged to account for sea level rise eventually.
--
John Larkin Highland Technology, Inc trk
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com