What evaporates does tend to come back, but this is only because the forest seeds the air every morning. Fungi release salts as part of the mechanism for expelling spores. (Late at night high in the trees). These particles of salt rise in the morning air and mix with turpenes and isoprenes released from the trees, sunlight causes them to sublime onto the salt particles to produce good condensation nuclei. Now, when it rains, late in the afternoon, all those condensation nuclei get rained out of the air. So, without the fungi, and isoprenes, there will be no rain the following day, no matter how much water vapor there is in the air. We need to work on a proof that cumulus clouds actually pump air up into the next layer of the atmosphere. I do have a video (from Nasa) where I show from Nasa"s video that this is probably happening. https://www.youtube.com/watch?v=NwGzAwOyla4 Here is a link for the potassium salts. There are others too. http://scitechdaily.com/how-aerosol-particles-form-in-the-amazon/ Thanks Brian White
On Monday, 1 June 2015 07:47:41 UTC-7, Stephen Salter wrote: > > Brian > > I wish I knew more biology. My guess would be that lots of what > evaporates in the morning comes back in the afternoon so that a > conventional rain gauge with evaporation carefully prevented gives a false > impression. > > But we would only be changing the CCN concentration over the sea. The > concentration values over land are so much higher that we cannot have much > effect. What happens after we spray depends on what the winds are doing. My > engineer's simplified model is that the first effect is we cool the sea > surface. This will reduce the evaporation rate but also increase the > temperature difference between sea and land to give a stronger monsoon. > More CCN will also reduce the size of cloud drops which inhibits rain over > the sea to leave more to fall over land. Then cooler air over land will > reduce evaporation rates there. The may also be other effects to do with > breaking waves and air bubbles but I think that the first four are the main > ones having a private 3 to 1 tug of war. > > We may be able to influence the outcome by choosing the times and places > we do the spraying. We want to be able to adjust these in the light of > day-to-day observations. It is like have a steering wheel and brakes on a > road vehicle, much better than using fixed wheel angles or commands > downloaded from a read-only memory. > > Stephen > > > Emeritus Professor of Engineering Design. School of Engineering, > University of Edinburgh, Mayfield Road, Edinburgh EH9 3JL, Scotland > [email protected] <javascript:>, Tel +44 (0)131 650 5704, Cell 07795 203 > 195, WWW.homepages.ed.ac.uk/shs, YouTube Jamie Taylor Power for Change > On 01/06/2015 14:01, Brian Cartwright wrote: > > Thanks, Stephen, but isn't it true that most CCN over the Amazon are of > biological origin? > To put it in very plain language, the typical assumption about where rain > comes from is that it blows in from the ocean. I'm interested to what > extent it is pulled in by forests. Do you think deforestation and > degradation of vegetation on drylands create weather dead zones, by losing > the biological capacity to transpire moisture? > > Thanks to all for your input! > Brian > > On Monday, June 1, 2015 at 7:53:52 AM UTC-4, Stephen Salter wrote: >> >> Hi All >> >> Below is a map from Ben Parkes PhD thesis which tested the idea for >> coded-modulation of the CCN concentrations in a climate model. >> >> Marine cloud brightening in a pink sea area will increase precipitation >> in the black target area. The blue bits will dry it. These blue bits are >> in reasonable agreement with the Jones Haywood Boucher paper which said bad >> things would happen if we did MCB off Namibia. >> >> It seems that there are plenty of pink places which can rescue the Amazon >> but not many climate modeller who are interested in replicating the Parkes >> work. If anyone asks I can send them maps for the world-wide effects of >> 89 spray regions and an explanation of the coded modulation idea. >> Understanding why spray south of the Aleutians will help the Amazon ought >> to be worth a prize or two. >> >> >> The next bit would be to test marine cloud brightening according to the >> phase of el Nino and Monsoons. >> >> Stephen >> > -- > You received this message because you are subscribed to the Google Groups > "geoengineering" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > Visit this group at http://groups.google.com/group/geoengineering. > For more options, visit https://groups.google.com/d/optout. > > > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
