In a message dated 2/23/2004 12:07:36 PM Central Standard Time, [EMAIL PROTECTED] writes: Perhaps. But don't forget that the particulates in question are soot, which tends to absorb heat rather than reflecting it. That's the point. The soot absorbs heat that would otherwise reach the ground and increases the emissivity of the upper atmosphere, radiating more heat into space.
I realize they went to a lot of effort to eliminate smoke from jets; when I was young almost all jets were smoky. However, given that the airlines fly under government regulation, a mandatory smoky engine could be imposed by any dumb non-elected FAA administrator, as long as the scientifically trained lawyers in congress would permit it. Quite possibly, it could be achieved without any engine modifications -- don't want to void the warranty -- by additives to the fuel (easy to enforce) or by injecting something into the exhaust. If they could seed cloud formation at high altitude (big if), the clouds would be more effective than soot. [Non-text portions of this message have been removed] Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
