Rough draft - OK, I'll admit that this may or may not
be my final words on a tough subject! Yes, the earth's climate, she is a
changing. And yes, us humans are having an effect. (Actually, all life
has had an effect on the earth, most of which has been for the good.
Were it not for the CO2 and Oxygen in the air, we humans
would not have made it this far). In point of fact, the climate today is complex and
evolving. A fact most climate scientists will agree on. What they
may may not be agreeing so much on is whether or not our
industrial technologies are messing with the composition of the
atmosphere as well as the massive release of so-called greenhouse gases. CO2 and Methane come to my mind
almost immediately. Not only do machines emit carbon dioxide, but so do
the 7 billion humans that wander around on our planet. As far as methane goes,
it is generated generated in large quantities by micro organisms and also some insects. Each termite
(for instance) produces, on average, about half a microgram of
methane per day, a seemingly insignificant amount. However, when this
is multiplied up by the world population of termites, global methane
emission from this source is estimated to be about 20 million tons
each year. Also, remember that methane is much more an active green house gas
than CO2 is! The truth be told, it is more a question of how much moisture is in the atmosphere as that has a much greater impact on the amount of heat it can even hold. In dry climates like death Valley, the temperatures often drop, when the sun sets, to freezing even though the CO2 remains at the same concentrations! Food for thought!
Then, there are all those pesky deep
sea thermal vents. Seems there are a lot more of them than many first
thought! Results of research being done by the likes of Dr. Nicole
Dubilier at the MARUM Center for Marine Environmental Sciences
and the Max Planck Institute for Marine Microbiology in the
Mid-Atlantic Ridge indicate that many more of these small active
thermal sites exist along the Mid-Atlantic Ridge than was previously
assumed. According to Dr. Dubilier, “This could change our
understanding of the contribution of hydrothermal activity to the
thermal budget of the oceans.” These vents spew hot fluids of up to
300 degrees Celsius that contain large amounts of both methane
and hydrogen sulfide. And, they've apparently been doing it
24/7 for many thousands of years! Now, am I saying that these vents may be contributing to the heating of the planet's atmosphere? No, not at all. Much more in the way of research is needed!
What is not needed are those of us who attempt to carry forward some personal political agenda based on half truths and outright lies.The bottom line, the truth will out, perhaps a few thousands years from now...