Editing Cloud albedo (section)

=== The Twomey Effect (Aerosol Indirect Effect) ===
[[File:Aerosol effect on cloud albedo.jpg|thumb|Increased cloud droplet concentration and albedo due to aerosol effect]]
The [[Twomey effect|Twomey Effect]] is increased cloud albedo due to cloud nuclei from pollution.<ref>{{Cite journal|last=Twomey|first=S.|date=1974|title=Pollution and the Planetary Albedo|url=https://doi.org/10.1016/0004-6981(74)90004-3|journal=Atmospheric Environment|volume=8|issue=12 |pages=1251–1256|doi=10.1016/0004-6981(74)90004-3 |bibcode=1974AtmEn...8.1251T }}</ref><ref name=":22" /> Increasing [[Aerosol|aerosol concentration]] and aerosol density leads to higher cloud droplet concentration, smaller cloud droplets, and higher cloud albedo.<ref name=":2" /><ref name=":0" /> In macrophysically identical clouds, a cloud with few larger drops will have a lower albedo than a cloud with more smaller drops. The smaller cloud particles similarly increase cloud albedo by reducing precipitation and prolonging the lifetime of a cloud. This subsequently increases cloud albedo as solar radiation is reflected over a longer period of time. The [[Albrecht effect|Albrecht Effect]] is the related concept of increased cloud lifetime from cloud nuclei.<ref name=":03" />