Wednesday, July 18, 2018
Brace! Brace! Brace!
July’s
first 10 days were particularly slammed by natural disasters. Fires raging up
and down the West Coast and other western states were and continue to decimate
homes and hundreds of thousands of acres. Fire-dropping aircraft and legions of
firefighters on the ground are battling high winds, ultra-dry grasses and
timber plus searing, record-breaking temperatures. Fire season seems to be all
year now.
Meanwhile,
in Japan, the opposite is true. Exceptionally heavy rains took their toll as
well: “Torrents of rain and flooding battered a widespread area of southwestern
Japan on Saturday [7/7], with local media casualty reports climbing quickly.
Public broadcaster NHK said 38 people were dead, four were seriously injured
and 47 were missing.
“Television
footage showed a residential area in Okayama prefecture steeped in brown water
that was spreading like a huge lake. Some people fled to rooftops and balconies
and waved furiously at rescue helicopters… Okayama prefecture said a man died
when he was caught in a landslide, and six others were missing. Evacuation
orders had been issued to more than 360,000 people, the prefecture said in a
statement.” Los Angeles Times, July 8th.
While
this was happening, a powerful tropical storm (“Chris”) was forming off the
North Carolina coast, signaling the beginning of what could be yet another
horrific season of devastating hurricanes. Global temperatures are rising
whether evangelicals and Trump administrators want it or not. As Atlantic,
Caribbean and Gulf waters push ever-warmer, the impact of large tropical storms
promises to be increasingly worse. Warmer surface water seeds the swirling mass
above, feeding ordinary tropical storms until they make it to hurricane
strength, some even pushing up to the 157 mph-plus Category Five level.
Those
water soaked swirling masses are increasingly heavier than the average storms
of twenty or fifty years ago. And heavy storms don’t move as fast as less
water-soaked tropical depressions. Scientific studies have shown that tropical
storms have steadily moved slower than they did back in 1949 (10% more slowly
over that time). If the trend continues, studies suggest that by the end of the
century, these storms will be dumping 24% more rain per storm!
Simply
storms stay longer over the same spots and thus drop vastly more rain in the
process… making bad very bad and very bad so much worse. We know that those sea
waters are warmer than ever before. We know that that water temperature rise is
not a good sign. But we have never lived in an era where water temperatures
have reached these average temperatures before. We know it is going to be bad.
What we really cannot project is how bad it will really be.
But
scientists have just witnessed the very recent devastation of Hurricanes Maria
and Harvey. They know what can happen, and given the fact the waters continue
to get warmer, they are expecting the power of these storms to get worse. “‘There’s
almost unanimous agreement that hurricanes will produce more rain in a warmer
climate,’ said Adam Sobel, professor of applied physics at Columbia University
and director of its Initiative on Extreme Weather and Climate. ‘There’s
agreement there will be increased coastal flood risk, at a minimum because of
sea level rise. Most people believe that hurricanes will get, on average,
stronger. There’s more debate about whether we can detect that already.’
“No
one knows how strong they could get, as they’re fueled by warmer ocean water.
Timothy Hall, senior scientist at the NASA Goddard Institute for Space Studies,
said top wind speeds of up to 230 mph could occur by the end of the century, if
current global warming trends continue. This would be the strength of an F-4
tornado, which can pick up cars and throw them through the air (although
tornadoes, because of their rapid changes of wind direction, are considered
more destructive).
“Does
that mean the five-category hurricane scale should be expanded to include a
Category 6, or even Category 7?... The Saffir–Simpson hurricane wind scale,
developed in the early 1970s, ranks hurricanes from Category 1, which means
winds of 74 to 95 mph, to Category 5, which covers winds of 157 mph or more.
“Since
each category covers a range of wind speeds, it would appear that once wind
speed reaches 190 or 200 mph, the pattern may call for another category. Last
season saw two Category 5 hurricanes, Irma and Maria, with Irma reaching 180
mph. And in 2015, off Mexico’s Pacific coast, Hurricane Patricia achieved a
freakish sustained wind speed of 215 mph.
“‘If
we had twice as many Category 5s — at some point, several decades down the line
— if that seems to be the new norm, then yes, we’d want to have more
partitioning at the upper part of the scale,’ Hall said. ‘At that point, a
Category 6 would be a reasonable thing to do.’… Many scientists and forecasters
aren’t particularly interested in categories anyway, since these capture only
wind speed and not the other dangers posed by hurricanes.
“‘We’ve
tried to steer the focus toward the individual hazards, which include storm
surge, wind, rainfall, tornadoes and rip currents, instead of the particular
category of the storm, which only provides information about the hazard from
wind,’ said Dennis Feltgen, spokesman for the National Hurricane Center.
‘Category 5 on the Saffir-Simpson scale already captures ‘catastrophic damage’
from wind, so it’s not clear that there would be a need for another category
even if storms were to get stronger.’” LA Times.
What
we do know is that federal, state and local governments remain under-prepared
for the damage that is inevitably yet to come. Even as the Trump administration
is patting itself on the back over its post-Maria rescue/rebuilding efforts in
Puerto Rico, the deaths resulting from that hurricane have been upped from a
couple of hundred to over 4,600. Large parts of the island still remain without
electricity or potable water. What will be next? How will we respond? Brace!
Brace! Brace!
I’m Peter Dekom, and aren’t you
gratified that the Trump administration is pushing for a greater use of
greenhouse-gas-emitting coal-fired electrical power plants, lower emissions
standards for cars, and an overall reduction in environmental regulations?
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