«We found that
the average impact of drought disasters on crops has gotten worse,» Lesk said.
Not exact matches
Various studies predict an
average 30 percent reduction in farm incomes due to climate change
impacts, including greater extremes in temperatures and rainfall (floods,
droughts) and the emergence
of new pest and disease strains.
The researchers studied all 571 European cities to assess the likely
impact of flooding,
drought and heatwaves in the latter half
of the century, under a climate model where
average temperatures rise between 2.6 C and 4.8 C - the current widely accepted business - as - usual trajectory.
[1] CO2 absorbs IR, is the main GHG, human emissions are increasing its concentration in the atmosphere, raising temperatures globally; the second GHG, water vapor, exists in equilibrium with water / ice, would precipitate out if not for the CO2, so acts as a feedback; since the oceans cover so much
of the planet, water is a large positive feedback; melting snow and ice as the atmosphere warms decreases albedo, another positive feedback, biased toward the poles, which gives larger polar warming than the global
average; decreasing the temperature gradient from the equator to the poles is reducing the driving forces for the jetstream; the jetstream's meanders are increasing in amplitude and slowing, just like the lower Missippi River where its driving gradient decreases; the larger slower meanders increase the amplitude and duration
of blocking highs, increasing
drought and extreme temperatures — and 30,000 + Europeans and 5,000 plus Russians die, and the US corn crop, Russian wheat crop, and Aussie wildland fire protection fails — or extreme rainfall floods the US, France, Pakistan, Thailand (driving up prices for disk drives — hows that for unexpected adverse
impacts from AGW?)
The most severe
impacts of climate change — damaging and often deadly
drought, sea - level rise, and extreme weather — can only be avoided by keeping
average global temperatures within 2 degrees C (3.6 degrees F)
of pre-industrial levels.
Moreover, the
average impact of recent
droughts — those between 1985 and 2007 — was a 13.7 percent loss, which is 7 percent greater than the 6.7 percent
impact during
droughts that occurred earlier, between 1964 and 1984.
The World Meteorological Organization (WMO) released its provisional Statement on the State
of the Climate this week, estimating that 2017 is likely to be one
of the warmest years for global
average surface temperature, with many high -
impact events including catastrophic hurricanes, floods, heatwaves and
droughts.
It is clear that in terms
of weather, environmental health, extreme events, snow, rain
drought and flood, the
impact of a global
average is trivial or less.
I don't play golf, and I have nothing against the game itself, yet the environmental
impact of even a public golf course in a time
of extreme
drought (the
average golf course is said to use more than 300,000 gallons
of water a day) is a bit troubling to me.