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  Controls of dust emissions by vegetation and topographic depressions: An evaluation using dust storm frequency data

Engelstädter, S., Kohfeld, K. E., Tegen, I., & Harrison, S. P. (2003). Controls of dust emissions by vegetation and topographic depressions: An evaluation using dust storm frequency data. Geophysical Research Letters, 30(6), 1294. doi:10.1029/2002GL016471.

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Engelstädter, Sebastian1, Autor           
Kohfeld, K. E.1, Autor           
Tegen, I.2, Autor           
Harrison, S. P.1, Autor           
Affiliations:
1Research Group Paleo-Climatology, Dr. S. P. Harrison, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497765              
2Department Biogeochemical Synthesis, Prof. C. Prentice, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497753              

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 Zusammenfassung: [1] The degree to which dust emissions are controlled by vegetation cover and geomorphic setting (specifically closed topographic depressions) was investigated using dust storm frequency (DSF) data based on visibility measurements from >2400 meteorological stations worldwide. Comparisons with distributions of vegetation types suggest that DSF is highest in desert/bare ground (median: 60-80 d/yr) and shrubland (median: 20-30 d/yr) regions, and comparatively low in grassland regions (median: 2-4 d/yr). Average DSF is inversely correlated with leaf area index (an index of vegetation density) and net primary productivity. In non-forested regions, DSF increases as the fraction of closed topographic depressions increases, likely due to the accumulation of fine sediments in these areas. These findings support the importance of incorporating vegetation and geomorphic setting as explicit controls on emissions in global dust cycle models.

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 Datum: 2003
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1029/2002GL016471
Anderer: BGC0586
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Titel: Geophysical Research Letters
  Kurztitel : GRL
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : American Geophysical Union
Seiten: - Band / Heft: 30 (6) Artikelnummer: - Start- / Endseite: 1294 Identifikator: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217