When a boat goes through the water, it often leaves a very fine oil slick behind. Has anyone ever tried to calculate whether these slicks have a positive or negative effect on global warming, but altering evaporation, DMS exchange, waves, SST, CO2 exchange, etc? This should be quite an easy effect to modify if the changes prove to be significant. It may even have geoengineering potential, as in my idea with hurricanes.
A 2009/7/26 Alvia Gaskill <[email protected]> > > From reading the paper, it seems that the reason for less clouds with > higher > SST due to CO2 forcing is due in part to a much quieter ocean, i.e., less > wind and less waves. The way that CCN from DMS from marine bacteria and > salt particles get into the atmosphere is in part due to breaking of waves. > If you heat the water gently, without disturbing it, you may get more water > vapor into the atmosphere, but without the accompanying CCN. Better put > some big assed propellers on those cloud boats, Salter as your mission may > have just been expanded. > > > ----- Original Message ----- > From: "Tom Wigley" <[email protected]> > To: <[email protected]> > Cc: "Climate Intervention" <[email protected]>; > "geoengineering" <[email protected]> > Sent: Sunday, July 26, 2009 6:07 AM > Subject: [geo] Re: [clim] Yet another positive feedback > > > > > > The real issue is the total magnitude of feedbacks, as > > characterized by (e.g.) the equilibrium global-mean warming > > for 2xCO2 (DT2x). > > > > The breakdown of the feedbacks is not directly relevant to > > this -- although it is of interest in model validation. > > > > This paper tells us nothing about DT2x or its uncertainty. > > My comment -- so what. > > > > Tom. > > > > +++++++++++++++++ > > > > Stephen Salter wrote: > >> Hi All > >> > >> Science July 24 from > >> http://www.sciencemag.org/cgi/reprint/325/5939/460.pdf has a > >> something about a positive feedback between sea temperature and cloud > >> cover. I had thought that warmer seas would increase evaporation and so > >> cloud cover but drying them out seems to win. > >> > >> Sigh. > >> > >> Stephen > >> > > > > > > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
