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Naslov:Impact of dust source patchiness on the existence of a constant dust flux layer during aeolian erosion events
Avtorji:ID Dupont, Sylvain (Avtor)
ID Klose, Martina (Avtor)
ID Irvine, M. R. (Avtor)
ID González-Flórez, Cristina (Avtor)
ID Alastuey, A. (Avtor)
ID Bonnefond, J.-M. (Avtor)
ID Dagsson‐Waldhauserova, P. (Avtor)
ID Gonzalez-Romero, Adolfo (Avtor)
ID Hussein, Tareq (Avtor)
ID Yus-Díez, Jesús (Avtor), et al.
Datoteke:.pdf JGR_Atmospheres_-_2024_-_Dupont_-_Impact_of_Dust_Source_Patchiness_on_the_Existence_of_a_Constant_Dust_Flux_Layer_During.pdf (5,95 MB)
MD5: 0AB46BDDB69BFCD4614643A29640EFE4
 
URL https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2023JD040657
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Abstract Dust emission fluxes during wind soil erosion are usually estimated using a dust concentration vertical gradient, by assuming a constant dust flux layer between the surface and the dust measurement levels. Here, we investigate the existence of this layer during erosion events recorded in Iceland and Jordan. Size‐resolved dust fluxes were estimated at three levels between 2 and 4 m using the eddy‐covariance method. Dust fluxes were found mainly constant only between the two upper levels in Iceland, the lower dust flux being often stronger and richer in coarse particles, while dust fluxes in Jordan were nearly constant across all levels. The wind dynamics could not explain the absence of a constant dust flux layer in Iceland. We show that the presence of stationary dust source patches in Iceland, related to surface humidity, created a non‐uniform dust layer near the surface, named dust roughness sublayer (DRSL), where individual plumes behind each patch interact but do not fully mix. The lowest dust measurement level was probably located within this sublayer while the upper ones were located above, such that there the emitted dust became spatially well‐mixed. This explains near the surface in Iceland, the more intermittent dust concentration, its low correlation with the dust concentrations above, and the richer dust flux in coarse particles due to their lower deposition contribution. Our findings highlight the importance of estimating dust fluxes above a dust blending height whose characteristics depend on the dust source patchiness caused by surface humidity or the presence of sparse non‐erosive elements.
Ključne besede:dust emission, turbulence, dust fluxes, dust source patchiness
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.06.2024
Leto izida:2024
Št. strani:str. 1-21
Številčenje: Vol. ǂ129, issue 12, [article no.] e2023JD040657
PID:20.500.12556/RUNG-9515 Novo okno
ISSN:2169-897X
COBISS.SI-ID:216994819 Novo okno
UDK:502.3/.7
ISSN pri članku:2169-897X
eISSN:2169-8996
DOI:10.1029/2023JD040657 Novo okno
NUK URN:URN:SI:UNG:REP:JHNYJKB3
Datum objave v RUNG:29.11.2024
Število ogledov:897
Število prenosov:3
Metapodatki:XML DC-XML DC-RDF
:
DUPONT, Sylvain, KLOSE, Martina, IRVINE, M. R., GONZÁLEZ-FLÓREZ, Cristina, ALASTUEY, A., BONNEFOND, J.-M., DAGSSON‐WALDHAUSEROVA, P., GONZALEZ-ROMERO, Adolfo, HUSSEIN, Tareq in YUS-DÍEZ, Jesús, 2024, Impact of dust source patchiness on the existence of a constant dust flux layer during aeolian erosion events. Journal of geophysical research : Atmospheres [na spletu]. 2024. Vol. 129, no. 12,  e2023JD040657, p. 1–21. [Dostopano 18 april 2025]. DOI 10.1029/2023JD040657. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=9515
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Gradivo je del revije

Naslov:Journal of geophysical research : Atmospheres
Skrajšan naslov:J. geophys. res., Atmos.
Založnik:John Wiley & Sons
ISSN:2169-897X
COBISS.SI-ID:311465 Novo okno

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:11.06.2024

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