Impact of Asian Dust Aerosol and Surface Albedo on Photosynthetically Active Radiation and Surface Radiative Balance in Dryland Ecosystems
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-14
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
We investigated the extent to which Asian dust can affect vegetation in dryland ecosystems through altering photosynthetically active radiation (PAR) and shortwave and longwave radiation components of the surface energy balance.
Results show that dust decreases the surface radiative balance and total PAR.
The diffuse component of PAR, however, increases with increasing dust load but then decreases after reaching a maximum at a certain optimum condition.
The forcing efficiency ranges from −67.7 to −82.2 Wm-2 τ0.5 −1 in total PAR and from −68.8 to −122.1 Wm-2 τ0.5 −1 in surface radiative balance.
The ratio of total PAR to downwelling shortwave flux remains nearly constant (0.45±4%) similar to other aerosol types, while the ratio for the diffuse faction of PAR exhibits significant variations.
The impact of dust on the gross photosynthetic rate varies among different types of crops.
C4 plants such as corn tend to be less sensitive to the dust optical properties compared to C3 plants such as soybean and wheat.
American Psychological Association (APA)
Xi, X.& Sokolik, I. N.. 2012. Impact of Asian Dust Aerosol and Surface Albedo on Photosynthetically Active Radiation and Surface Radiative Balance in Dryland Ecosystems. Advances in Meteorology،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-459624
Modern Language Association (MLA)
Xi, X.& Sokolik, I. N.. Impact of Asian Dust Aerosol and Surface Albedo on Photosynthetically Active Radiation and Surface Radiative Balance in Dryland Ecosystems. Advances in Meteorology No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-459624
American Medical Association (AMA)
Xi, X.& Sokolik, I. N.. Impact of Asian Dust Aerosol and Surface Albedo on Photosynthetically Active Radiation and Surface Radiative Balance in Dryland Ecosystems. Advances in Meteorology. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-459624
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-459624