Will wrote: "Concerning: "But you do realize both processes are at work? Right?" You already yourself posted an excerpt form a Wikipedia article which agrees with me. The warming of a real greenhouse is all explained by a convective greenhouse effect and not a radiative greenhouse effect. Experiments were performed near the beginning of the 20th century that showed that whether the glass passed or did not pass LWIR radiation did not effect the temperature in a greenhouse. There is no radiant greenhouse effect. "
Will continued: "I watched the videos concerning climate history. It is true that warmer climates coincide with increased CO2 in the atmosphere. It is well known that warmer water cannot hold as much CO2 so there is a reason for it."______________________
A fanciful combination of facts, but Will's implication underscores his disconnect from the real physics of the world out there. Yes warmer water holds slightly less CO2, but our increasing atmospheric concentrations far outweighs the ocean's slight reduction in holding capacity. It seems Will expects us to ignore that society is injecting over 2 gigatons month after month after month.
(Will is also lost when it comes to appreciating the difference between deep geologic time and the human societal time frames current AGW is occurring within.)
Also regarding the video, it's worth pointing out that Will seems to have missed the fact that Dr. Alley is a leading expert in this field. His videoed talk was in essence a report on current understanding and the evidence supporting that learned consensus. It's not something to brush off, it's something to listen to, chew on, digest, and learn from!
Tragically today most people have zero interest in or appreciation for how our Earth evolved, or how our complex society got here and what all keeps it going, let alone take the time to learn about the science they are attacking.
Here's Professor Alley's talk for those who may be curious:
Will then asserts:
"There is no real evidence that the additional CO2 adds to the warming..."(I'm saving the remainder of Will's comment for my next post so I can devote the rest this post to Professor David Archer's course on global warming.)
What baffles me is where do folks get off being so self-certain of their personal analysis? Come on, people spend decades learning these details. Sadly Will doesn't yet appreciate his sort of "revelation" happen to every enthusiastic Freshman. It's a part of exploring new discoveries and being all-around skeptical. But, serious students are also aware that they have lots to learn and are thirsty for new information to better inform their understanding.
Then again, one can get an easier, though simpler understanding at the website of National Center for Atmospheric Research/University Corporation for Atmospheric Research internet education program.