It will be particularly interesting to see what effect no-till agriculture, etc. have on this aerosol loading. There may be a trade-off between carbon farming and incidental SRM.
Furthermore, CCN effect also needs to be considered Andrew Lockley On 11 May 2017 19:28, "Adrian Tuck" <[email protected]> wrote: > This paper seems relevant: > Radiative forcing from anthropogenic sulfur and organic emissions reaching > the stratosphere > > By:Yu, PF > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Yu,%20PF&ut=1000455002&pos=1&excludeEventConfig=ExcludeIfFromFullRecPage> > (Yu, > Pengfei)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1>,2 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-2> > ] * > ; Murphy, DM > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Murphy,%20DM&ut=1000516534&pos=2&excludeEventConfig=ExcludeIfFromFullRecPage> > (Murphy, > Daniel M.)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1> > ] * > ; Portmann, RW > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Portmann,%20RW&ut=2005476262&pos=3&excludeEventConfig=ExcludeIfFromFullRecPage> > (Portmann, > Robert W.)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1> > ] * > ; Toon, OB > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Toon,%20OB&ut=80086915&pos=4&excludeEventConfig=ExcludeIfFromFullRecPage> > (Toon, > Owen B.)*[ 3 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-3>,4 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-4> > ] * > ; Froyd, KD > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Froyd,%20KD&ut=2005364445&pos=5&excludeEventConfig=ExcludeIfFromFullRecPage> > (Froyd, > Karl D.)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1>,2 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-2> > ] * > ; Rollins, AW > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Rollins,%20AW&ut=1000590829&pos=6&excludeEventConfig=ExcludeIfFromFullRecPage> > (Rollins, > Andrew W.)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1>,2 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-2> > ] * > ; Gao, RS > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Gao,%20RS&ut=2005366899&pos=7&excludeEventConfig=ExcludeIfFromFullRecPage> > (Gao, > Ru-Shan)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1> > ] * > ; Rosenlof, KH > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/OneClickSearch.do?product=UA&search_mode=OneClickSearch&SID=Q2QrOUagrE3RTYm6Klp&field=AU&value=Rosenlof,%20KH&ut=1000579942&pos=8&excludeEventConfig=ExcludeIfFromFullRecPage> > (Rosenlof, > Karen H.)*[ 1 > <http://apps.webofknowledge.com.iclibezp1.cc.ic.ac.uk/full_record.do?product=UA&search_mode=GeneralSearch&qid=14&SID=Q2QrOUagrE3RTYm6Klp&page=1&doc=5#addressWOS:000385357200064-1> > ]* > View ResearcherID and ORCID > > GEOPHYSICAL RESEARCH LETTERS > > Volume: 43 > > > Issue: 17 > > > Pages: 9361-9367 > > DOI: 10.1002/2016GL070153 > > Published: SEP 2016 > View Journal Information > Abstract > > Stratospheric aerosols cool the Earth by scattering sunlight. Although > sulfuric acid dominates the stratospheric aerosol, this study finds that > organic material in the lowermost stratosphere contributes 30-40% of the > nonvolcanic stratospheric aerosol optical depth (sAOD). Simulations > indicate that nonvolcanic sAOD has increased 77% since 1850. Stratospheric > aerosol accounts for 21% of the total direct aerosol radiative forcing > (which is negative) and 12% of the total aerosol optical depth (AOD) > increase from organics and sulfate. There is a larger stratospheric > influence on radiative forcing (i.e., 21%) relative to AOD (i.e., 12%) > because an increase of tropospheric black carbon warms the planet while > stratospheric aerosols (including black carbon) cool the planet. Radiative > forcing from nonvolcanic stratospheric aerosol mass of anthropogenic > origin, including organics, has not been widely considered as a significant > influence on the climate system. > > -- 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.
