Dear Jeff--A couple of thoughts:
1. The lifetime of the Cloud Condensation Nuclei (i.e., sea salt) that
would be injected lofted (well, misted) up are really quite
short--indeed, the real challenge of the approach is having the CCN last
beyond hours and perhaps to a day or two, so not much likelihoo of them
drifting for a long way and getting deposited on ice.
2. MCB will be most effective if it is done over a dark surface. That
is, if one wants to reflect more sunlight to space, no real sense doing
it over ice covered areas that are already bright. The best place to do
in terms of energy reflected (which is not the only consideration) would
be over dark oceans, and at generally lower latitudes where there is
more sunlight coming down on the clouds (yes, high latitudes can have
equally hig total daily sunlight, but the sun angle is so low that
brightening the clouds I don't think is all that effective in increasing
reflection of sunlight out to space, which is the intent).
Mike MacCracken
On 2/11/24 3:17 PM, Jeff Suchon wrote:
Hi everyone,
I just joined this group and am glad to be here. Am sold on MCB,
surface reflection, and SAI and at that being deployed wisely asap.
Please give me any answer to the question of the aerosols' effects on
the polar ice. Specifically, salt from MCB. I realize really it
doesn't rain much yet over the polar regions. And, of course SO2, or
any new possible aerosols. Thanks!
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