- #36
heldervelez
- 253
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I saw the announcement and it is about 'aliens' . I'm pretty sure that they will not address within this perspective.
heldervelez said:I saw the announcement and it is about 'aliens' . I'm pretty sure that they will not address within this perspective.
In that study Andy Ackerman, of NASA’s Ames Research Center, and co-authors used a computer model to demonstrate that energy-absorbing aerosols can have a semi-direct affect on cumulus clouds over the ocean. At the time he wrote his paper, Ackerman was unaware of Hansen’s paper and so he wasn’t familiar with Hansen’s term “semi-direct effect.” Instead, Ackerman described it as the “cloud-burning effect of soot.” But both groups of scientists described the basic underlying physics of the process in pretty much the same way: as the top of the boundary layer becomes filled with dark-colored particles (like soot), the aerosols absorb sunlight and warm the temperature of the air relative to the temperature of the surface. According to Ackerman, this heating at the top of the boundary layer burns away clouds in two ways: (1) by accelerating the process of evaporation of existing clouds, and (2) by suppressing the upward flow of moisture from the surface needed to form new clouds.
dustinthewind said:Hot air once released should reach terminal velocity quite quickly at a relatively low speed.
mugaliens said:What does this mean? What's "terminal velocity" for "hot air?" What do you mean by "relatively low speed?"