Global Weather Phenomenon-Natural/Technological Disasters-Space Events-Epidemic/Biological Hazards-
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Major increase in weather disasters over last 2 decades
Since 1995, weather disasters have killed millions of people & left billions injured & homeless.
FILE:
A flood-affected resident swims through floodwaters in Kalay, upper
Myanmar’s Sagaing region on August 3, 2015. Relentless monsoon rains
have triggered flash floods and landslides, destroying thousands of
houses, farmland, bridges and roads with fast-flowing waters hampering
relief efforts. Picture: AFP.
GENEVA
– Weather-related disasters such as floods and heatwaves have occurred
almost daily in the past decade, almost twice as often as two decades
ago, with Asia being the hardest hit region, a UN report said on Monday.
While
the report authors could not pin the increase wholly on climate change,
they did say that the upward trend was likely to continue as extreme
weather events increased.
Since 1995, weather disasters have
killed millions of people, left billions injured, homeless or in need of
aid, and accounted for 90 percent of all disasters, it said.
A recent peak year was 2002, when drought in India hit 200 million and a sandstorm in China affected 100 million.
But the standout mega-disaster was Cyclone Nargis, which killed 138,000 in Myanmar in 2008.
Warning: This Video Contains Graphic Content Viewer Discretion Advised..
Destructive weather has struck all over the globe in recent weeks as climate chaos shows its ugly face.
Rare,
strange, extreme and record breaking weather events have taken place
over the past month or so, and this is just the beginning!
This
series does not mean the world is ending! These are documentaries of a
series of extreme weather events which are leading to bigger earth
changes. If you're following the series, then you're seeing the signs.
It's much more than one video!
Crane collapse moment at Grand Mosque (Kabe) in Mecca during a freak storm. At least 87 people have died and over 180 injured. https://www.youtube.com/watch?v=Sqxwo...
If North Atlantic
hurricanes are more destructive or more frequent, it may be linked to
lower levels of atmospheric pollution. Photograph: Scott Eisen/Reuters
Scientists from Britain's Meteorological Office have fingered a
new suspect in their attempt to solve the mystery of tropical storms. It
is, unexpectedly, air quality.
If North Atlantic hurricanes are more destructive or more frequent, it may be linked to lower levels of atmospheric pollution.
Conversely, sulphate aerosols and other particles from factory
chimneys, vehicle exhausts, domestic fires, power stations and other
human economic advances may have played a role in keeping tropical
storms under control, at least a little, during the 20th century.
Climate
scientist Nick Dunstone and fellow-researchers at the Met Office's
Hadley Centre in Exeter, Devon, report in the Nature Geoscience journal
there is at least circumstantial evidence that aerosols play a more
significant role in the storm cycle than anyone had expected.
The
reason it has been difficult to separate the effect is a simple one:
when humans burn fossil fuels, they release greenhouse gases that slowly
but inexorably warm the atmosphere, and therefore the oceans.
Atmosphere and ocean are together a climate system: put more energy in,
and it must go somewhere. The likely consequences, most people have
thought, are extremes of wind and rain.
However, for most of the
20th century, humans released greenhouse gases and also all sorts of
other waste at the same time: specifically, sulphate aerosols that, as
urban smog, darkened buildings, increased the acidity of the falling
rain, rotted limestone structures and condemned hundreds of thousands to
bronchial illnesses and, ultimately, to early graves.
It didn't
seem possible to separate the effects – at least, not until Britain,
western European nations and North America introduced increasingly
strict clean air legislation.
This started to give scientists and
climate modellers a chance to tease out the different effects of the two
pollutants. Aerosols are important absorbers of sunlight, and they are
also important in cloud chemistry – water vapour droplets have to
condense on something. But important in what way? Do clouds reflect
sunlight and cool the region? Or do they build up prodigious quantities
of moving water and turn into the frenzies of a tropical storm? Or,
overall, do sulphates cool the atmosphere a little and counteract global
warming − and, if so, under what conditions?
