Synoptic analysis and simulation of an unusual dust event over the Atacama Desert

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Title:Main Title: Synoptic analysis and simulation of an unusual dust event over the Atacama Desert
Description:Abstract: An unusual dust event over the Atacama Desert occurred in July 2016. Here, a synoptic study of the event is carried out using the NCEP FNL analysis data and WRF-chem simulations. The “zonalization” of a mid-tropospheric trough leads to the formation of a horizontal convergence band over the Northern Atacama and thus downward wind below it. As the descending air masses warm adiabatically, strong temperature contrasts to the colder air over the western Andes occur and intensify the down-valley winds, thus leading to extraordinary strong easterly winds in the Atacama. Simulations with WRF-chem indicate that these surface winds are sufficient for large-scale dust emission, and simulated dust plumes traveling far over the eastern South Pacific agree well with the observations. As the integrated dust load is comparable with the load observed in major dust sources of the world, our findings highlight the importance of such unusual events.
Identifier:10.1002/asl.899 (DOI)
Citation Advice:Reyers M, Hamidi M, Shao Y. Synoptic analysis and simulation of an unusual dust event over the Atacama Desert. Atmos Sci Lett. 2019;e899. https://doi.org/10.1002/asl.899
Responsible Party
Creators:Mark Reyers (Author), Medhi Hamidi (Author), Yaping Shao (Author)
Publisher:Wiley
Publication Year:2019
Topic
CRC1211 Topic:Climate
Related Subproject:A3
Subject:Keyword: Climate Models
Geogr. Information Topic:Climatology/Meteorology/Atmosphere
File Details
Filename:Reyers_et_al_2019_dust_storm_Atacama.pdf
Data Type:Text - Article
File Size:17.6 MB
Date:Accepted: 27.03.2019
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
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Download Permission:Free
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Licence:None
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Specific Information - Publication
Publication Status:Accepted
Review Status:Peer reviewed
Publication Type:Article
Article Type:Journal
Source:Atmospheric Science Letters
Issue:6
Volume:20
Number of Pages:9 (1 - 9)
Metadata Details
Metadata Creator:Mark Reyers
Metadata Created:23.05.2019
Metadata Last Updated:23.05.2019
Subproject:A3
Funding Phase:1
Metadata Language:English
Metadata Version:V50
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Dataset Downloads:10
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