Comments by "" (@craigkdillon) on "PBS Terra"
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The idea that the jet streams are affected by the warming of the poles is NOT new..
I had discussions with climatologists on that topic in 2010.
My contention was (and is) that many deserts will become wetter, not dryer for two reasons.
1. As the Earth warms there is more water vapor in the air, thus more rain. Warmer temps also means more energy,
so rain storms will be more windy, too.
2. The jet streams help control our climate zones. They help define the latitude of deserts.
Deserts created by a mountain shadow effect, are not impacted.
But, deserts like the Sahara, Arabian, Mojave, Sonoran, and Kalahari are defined the by jet streams.
NOW, if the jet streams break down, having huge meanders, or even disappearing altogether,
the weather patterns, and thus the rain patterns will become unpredictable -- more random.
We should see dry years in normally very wet areas.
AND, see wet years in deserts.
Therefore, dry areas, like Los Angeles, should also see very wet years from time to time.
So, the deserts should NOT become dryer, but wetter.
At least, that is how I analyze it.
So far, climatologists, who study this all the time, with powerful computers to do detailed modelling
disagree with me. I might be wrong. If so, I would like to learn how I am wrong.
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So much ignorance. So much false hope.
1. Climate and cryosphere processes act on large time scales much larger than humans are comfortable with. A "long time" is a blink to the planet.
2. The heat already present in the ocean/air system is enough to drive sea level rise for the next 1000 years, and raise the oceans 70 ft.
How do I know that?? Simple, the oceans were 70 ft higher during the Pliocene - 2.5 mya.
CO2 levels in the atmosphere were only 390 ppm, lower than the 415 ppm today.
PLUS - our CO2 level is rising 2+ppm/year. By 2050, CO2 will be around 485ppm.
But, even if we could STOP CO2 levels rising, and keep them at the current level of 415ppm,
oceans would still rise to Pliocene levels ---- +70 Feet deeper than today.
The only question is how long will it take?? Each year, research indicates it will happen sooner than was predicted the year before.
By 2100, it may only be a meter or two. But, the process will continue to speed up.
So, 2200 may see a rise of 10+ meters.
And, 2300 may see 20+ meters.
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Sea level rise has not really begun to happen in earnest.
So far, people have been affected marginally with storm surge increase, and some tidal increase.
However, as it accelerates, land will start to be lost to the sea,
AND this process will accelerate.
Eventually, cities like Miami, Tampa, Jacksonville, Galveston, and Charleston will be lost to the sea.
The only question is, When??
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This is great.
The ONLY way to stop the process of Global Warming is to do CO2 removal.
First, you MUST understand how bad the problem IS.
1. 3.5 mya in the Pliocene, CO2 levels were 390ppm, AND oceans were 75 feet deeper.
SO, if we STOP increasing CO2 levels and KEEP them at current levels,
we will still get oceans 75 ft deeper. It will just take longer, but it will get there.
2. CO2 is now rising at about 2 ppm per year.
So, CO2 will be at 500 ppm by about 2060.
That will make global warming go higher faster.
We need this now.
But, the political will is not there yet, and will take years to develop.
It will happen when capitalists finally realize that today's world,
their source of wealth, will disappear if they don't let us stop it.
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