Search: onr:"swepub:oai:DiVA.org:su-131989" >
Challenges in const...
Challenges in constraining anthropogenic aerosol effects on cloud radiative forcing using present-day spatiotemporal variability
-
Ghan, Steven (author)
-
Wang, Minghuai (author)
-
Zhang, Shipeng (author)
-
show more...
-
Ferrachat, Sylvaine (author)
-
Gettelman, Andrew (author)
-
Griesfeller, Jan (author)
-
Kipling, Zak (author)
-
Lohmann, Ulrike (author)
-
Morrison, Hugh (author)
-
Neubauer, David (author)
-
- Partridge, Daniel G. (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi,University of Oxford, United Kingdom
-
Stier, Philip (author)
-
Takemura, Toshihiko (author)
-
Wang, Hailong (author)
-
Zhang, Kai (author)
-
show less...
-
(creator_code:org_t)
- 2016-02-26
- 2016
- English.
-
In: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 113:21, s. 5804-5811
- Related links:
-
https://www.pnas.org...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- A large number of processes are involved in the chain from emissions of aerosol precursor gases and primary particles to impacts on cloud radiative forcing. Those processes are manifest in a number of relationships that can be expressed as factors dlnX/dlnY driving aerosol effects on cloud radiative forcing. These factors include the relationships between cloud condensation nuclei (CCN) concentration and emissions, droplet number and CCN concentration, cloud fraction and droplet number, cloud optical depth and droplet number, and cloud radiative forcing and cloud optical depth. The relationship between cloud optical depth and droplet number can be further decomposed into the sum of two terms involving the relationship of droplet effective radius and cloud liquid water path with droplet number. These relationships can be constrained using observations of recent spatial and temporal variability of these quantities. However, we are most interested in the radiative forcing since the preindustrial era. Because few relevant measurements are available from that era, relationships from recent variability have been assumed to be applicable to the preindustrial to present-day change. Our analysis of Aerosol Comparisons between Observations and Models (AeroCom) model simulations suggests that estimates of relationships from recent variability are poor constraints on relationships from anthropogenic change for some terms, with even the sign of some relationships differing in many regions. Proxies connecting recent spatial/temporal variability to anthropogenic change, or sustained measurements in regions where emissions have changed, are needed to constrain estimates of anthropogenic aerosol impacts on cloud radiative forcing.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- aerosol radiative forcing
- cloud-aerosol interactions
- constraints
- factors
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Ghan, Steven
-
Wang, Minghuai
-
Zhang, Shipeng
-
Ferrachat, Sylva ...
-
Gettelman, Andre ...
-
Griesfeller, Jan
-
show more...
-
Kipling, Zak
-
Lohmann, Ulrike
-
Morrison, Hugh
-
Neubauer, David
-
Partridge, Danie ...
-
Stier, Philip
-
Takemura, Toshih ...
-
Wang, Hailong
-
Zhang, Kai
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
- Articles in the publication
-
Proceedings of t ...
- By the university
-
Stockholm University