dave1949
Super Star Member
So what would happen if the current trend was: Coming Ice Age (like it was a decade or so ago)? You don't think that drying and desertification would happen as trillions upon trillions of gallons of water were increasingly locked up in the ice caps? How do you know that 99% of the time between ice ages the West Coast isn't so dry it can't support any life? That we have been living in the 1% 'super-wet fantasy land' where life can actually exist there? I am shocked and amazed that people are shocked and amazed that the environment will change... didn't we all learn that not too long ago (geologically speaking) the planet was hot, moist and supported massive plant and animal life(dinosaurs)? Does that sound the same as today's environment? Does evolution, both of the planet and the animals on it, stop when we reach a 'comfortable spot'?
Why do people assume more heat means drying/desertification? Rising oceans mean more surface area for evaporation. Rising ocean temperatures mean more evaporation. Higher air temperatures mean more 'carrying capacity' for humidity. Sounds like a recipe for rain, not deserts to me.
What would we 'do' in the case of coming Ice Age? Start running pre-mix in our cars and trucks to create as many green house gasses as possible? Burn everything in sight and fly the ashes to the poles to blacken them and try to melt them?
Our time span of 'recorded history' is so short it's laughable to think we know what is coming or that we have or can have any effect on it. Personally I would welcome global warming over a new ice age because food doesn't grow in ice.
There is no validity in comparing conditions 65 million years ago to today. It is interesting geology and so forth, but has nothing to do with the present climate. The changes in the fauna and flora alone would make comparisons invalid.
Obviously any man-made climate changes will interact with whatever natural cycle is occuring. The last thing I read on that topic was given the earth's current tilt and variation in orbit, it should be cooling, not warming.
We do know the Southwest has experienced dry and drier periods in the past two to three thousand years. We know this through the study of Native American living sites. I believe even within historical times (times of which there is a written record) that the Southwest was able to support grazing grass lands. Some say it was ecologically altered by over grazing of non-native cattle, others say the weather changed.
While it may be fun to speculate on various theories or even hatch your own, it is meaningless unless you are willing to put them to the test - that is how science works. Assuming you aren't doing your own basic research, you have no reason to disbelieve those who are. Except you just don't want to.
Dave.