Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Factors controlling cloud albedo in marine subtropical stratocumulus regions in climate models and satellite observations
Stockholms universitet, Naturvetenskapliga fakulteten, Meteorologiska institutionen (MISU).ORCID-id: 0000-0003-4867-4007
Stockholms universitet, Naturvetenskapliga fakulteten, Meteorologiska institutionen (MISU).
Stockholms universitet, Naturvetenskapliga fakulteten, Meteorologiska institutionen (MISU).
2016 (engelsk)Inngår i: Journal of Climate, ISSN 0894-8755, E-ISSN 1520-0442, Vol. 29, nr 10, s. 3559-3587Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study focuses on the radiative properties of five subtropical marine stratocumulus cloud regions, on monthly mean scale. Through examination of the relation between total albedo and cloud fraction, and its variability and relation to other parameters, some of the factors controlling the reflectivity, or albedo, of the clouds in these regions are investigated. It is found that the main part of the variability in albedo at a given cloud fraction can be related to temporal, rather than spatial variability, indicating spatial homogeneity in cloud radiative properties in the studied regions. This is seen most clearly in satellite observations, but also in an ensemble of climate models. Further comparison between satellite data and output from climate models shows that there is good agreement with respect to the role of liquid water path, the parameter that can be assumed to be the primary source of variability in cloud reflectivity for a given cloud fraction. On the other hand, the influence of aerosol loading on cloud albedo differs between models and observations. The cloud-albedo effect, or cloud brightening caused by aerosol through its coupling to cloud droplet number concentration and droplet size, is found not to dominate in the satellite observations on monthly mean scale, as it appears to do on this scale in the climate models. The disagreement between models and observations is particularly strong in regions with frequent occurrence of absorbing aerosols above clouds, where satellite data contrary to the climate models indicate a scene darkening with increasing aerosol loading.

sted, utgiver, år, opplag, sider
2016. Vol. 29, nr 10, s. 3559-3587
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-125298DOI: 10.1175/JCLI-D-15-0095.1ISI: 000375950400005OAI: oai:DiVA.org:su-125298DiVA, id: diva2:892349
Tilgjengelig fra: 2016-01-10 Laget: 2016-01-10 Sist oppdatert: 2017-12-01bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Søk i DiVA

Av forfatter/redaktør
Bender, Frida
Av organisasjonen
I samme tidsskrift
Journal of Climate

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 459 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf