Ozone effect is well known. I was talking about scattered light effect A
On Mon, 8 Apr 2019, 00:52 Oliver Wingenter, <[email protected]> wrote: > Here are some comments pertaining to Andrew's initial questions. Loss of > ozone would have an impact on several health aspects. This lecture by > Jose-Luis Jimenez maybe a good start on a literature search to assess > optical impacts on UV. > http://cires1.colorado.edu/jimenez/AtmChem/CHEM-5151_S05_L16.pdf > On 4/7/2019 3:28 PM, Russell Seitz wrote: > > Two centuries ago Humboldt, Arago and others introduced 'Cyanometers', > color wheels usedto measure how blue the sky appeared as altitude and > locales varied. As I've already asked the inventor of the hand held > Dobson Unit meter , Forrest Mims, to develop parallel gadgets for water > reflectivity and ocean color, perhaps Andrew should request an electronic > sky color gizmo-- the self driving car folk at Tesla and Apple might add > the cost to their Due Diligence bill. > > On Sunday, April 7, 2019 at 12:05:59 PM UTC-4, Andrew Lockley wrote: >> >> For example, if it made skies whiter, it could potentially be more >> difficult (or easier) for drivers to pick out pedestrians. Over billions of >> people and decades, this could have a significant effect. >> >> Andrew Lockley >> >> On Sun, 7 Apr 2019, 17:01 Douglas MacMartin, <[email protected]> wrote: >> >>> There’s not that much ground-based astronomy in UV, relative to optical >>> and IR astronomy. >>> >>> >>> >>> Impact on optical astronomy is straightforward; if you lose 5% of the >>> direct light, you need 5% longer integration time to get same number of >>> photons. >>> >>> >>> >>> Impact on IR astronomy is less obvious, as limited by the background >>> from the sky, which depends on water vapour and temperature through the >>> atmospheric column (with most telescopes being at 14000’ or so). Shouldn’t >>> be hard to estimate, I’ve never gotten someone interested enough to do the >>> calculations but I could try again (my other job is being on the design >>> team for the Thirty Meter Telescope). >>> >>> >>> >>> I did ask people whether they noted anything after Pinatubo, and the >>> answer I got was no… that doesn’t mean there wasn’t an effect, but it >>> wasn’t something that the astronomy community by and large remembered. >>> >>> >>> >>> *From:* [email protected] <[email protected]> *On >>> Behalf Of *Russell Seitz >>> *Sent:* Sunday, April 7, 2019 9:31 AM >>> *To:* geoengineering <[email protected]> >>> *Subject:* [geo] Re: SRM optical impacts >>> >>> >>> >>> Why would reductions in the downwelling tropospheric light flux >>> increase any of the above? I'd instead ask instrumental astromomers >>> what they think SO2 scattering would do in the UV , as they have a lot to >>> lose from scattered light, which can cost them contrast and degrade the >>> signal to noise ratio in interferometry and spectroscopy. >>> >>> >>> >>> Try the Magellan and OWL teams >>> >>> On Wednesday, April 3, 2019 at 7:47:35 AM UTC-4, Andrew Lockley wrote: >>> >>> Has there been any investigation of SRM effects on vision? Eg perceived >>> glare, macular degeneration, corneal sunburn, vision development in >>> infants, object recognition when driving (and their equivalent in animals)? >>> >>> >>> >>> Andrew Lockley >>> >>> -- >>> 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. >>> -- >>> 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. >>> >> -- > 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. > > -- > Oliver Wingenter > Assoc. Prof. of Atmospheric Chemistry > Research Scientist at the Geophysical Research Center > New Mexico Institute of Mining and Technology > (New Mexico Tech) > Socorro, New Mexico 87801 > > -- > 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. > -- 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.
