As requested by Andrew. > Begin forwarded message: > > From: Andrew Lockley <[email protected]> > Subject: Re: [geo] Experiment idea > Date: 2 November 2020 at 16:59:57 GMT-7 > To: Adrian Tuck <[email protected]> > > Thanks. Can you repost to the list? > > Andrew > > On Mon, 2 Nov 2020, 23:58 Adrian Tuck, <[email protected] > <mailto:[email protected]>> wrote: > Let me relate a little history. My old boss at the Met Office in the 1970s > was Bob Murgatroyd, discoverer of the fact that the winds in the stratosphere > were easterly in summer and westerly in winter - that was in the first half > of WW2. He had been posted from the Met Office to RAE Farnborough, ranked as > a Captain in the Anti-Aircraft Artillery. The RAF Mosquitoes were having a > puzzling time, with the winds in the lower stratosphere not being consistent. > Bob rigged up a heavy AA gun to fire vertically, using smoke shells and made > his discovery, westerlies in winter, easterlies in summer. He was just > getting his first results when he was visited by an Air Ministry scientist, a > small man in a shiny old blue suit with a battered brief case. After asking > some questions, he remarked that Bob’s work was very interesting. A short > while later, Bob was posted from the Army and made a Flight Lieutenant in the > RAF.The AM boffin was Sidney Chapman, discoverer of the Chapman reactions > that produce ozone in the stratosphere. Bob wound up as chief forecaster for > all the Allied air forces in Europe after the Normandy invasion, and became > head of the `Meteorological Research Flight at Farnborough after the war. He > did pioneering work on the circulation of radioactive isotopes there, and > when he moved to Met Office HQ at Bracknell. Using tracers in the > stratosphere is a difficult exercise. The heavier radioactive isotopes from > the weapon testing of the 1950s and 1960s attached themselves to aerosols. > Both they and the lighter gaseous ones have to be treated statistically; > attempts to use specific releases and track them individually have not met > with much success. > >> On 2 Nov 2020, at 13:47, Andrew Lockley <[email protected] >> <mailto:[email protected]>> wrote: >> >> If you put a smoke grenade on a stratosphere balloon, can you learn anything >> useful by tracking the plume using a ground based telescope? If it's >> coloured smoke, it should be pretty easy to see. If you have a searchlight >> or lidar, you could track it at night, too - or just use the moon on a clear >> night. Would that work? >> >> -- >> 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] >> <mailto:[email protected]>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/geoengineering/CAJ3C-04LADbHzO9stsL7ohP3RAc0ssy0GPfCMjKLHQFi3TwCGg%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/geoengineering/CAJ3C-04LADbHzO9stsL7ohP3RAc0ssy0GPfCMjKLHQFi3TwCGg%40mail.gmail.com?utm_medium=email&utm_source=footer>. >
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