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Open AccessArticle

Dust Deposition on the Gulf of California Caused by Santa Ana Winds

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División de Geociencias Aplicadas, Instituto Potosino de Investigación Científica y Tecnológica, A.C., 2055 Camino a la Presa San José, 78216 San Luis Potosí, Mexico
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Unidad de Ciencias Sociales, Universidad Autónoma de Zacatecas, 108 Calzada Universidad, 98066 Zacatecas, Zacatecas, Mexico
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Instituto de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez, Calle de la Normal s/n, Col. Insurgentes Este, Mexicali, 21280 Baja California, Mexico
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(3), 275; https://doi.org/10.3390/atmos11030275
Received: 16 February 2020 / Revised: 3 March 2020 / Accepted: 6 March 2020 / Published: 10 March 2020
(This article belongs to the Special Issue Emissions, Transport and Fate of Pollutants in the Atmosphere)
Numerical simulations revealed a profound interaction between the severe dust storm of 2007 caused by Santa Ana winds and the Gulf of California. The weather research and forecasting model coupled with a chemistry module (WRF-CHEM) and the hybrid single-particle Lagrangian integrated trajectory model (HYSPLIT) allowed for the estimation of the meteorological and dynamic aspects of the event and the dust deposition on the surface waters of the Gulf of California caused by the erosion and entrainment of dust particles from the surrounding desert regions. The dust emission rates from three chosen areas (Altar desert, Sonora coast, and a region between these two zones) and their contribution to dust deposition over the Gulf of California were analyzed. The Altar Desert had the highest dust emission rates and the highest contribution to dust deposition over the Gulf of California, i.e., it has the most critical influence with 96,879 tons of emission and 43,539 tons of dust deposition in the gulf. An increase of chlorophyll-a concentrations is observed coinciding with areas of high dust deposition in the northern and western coast of the gulf. This kind of event could have a significant positive influence over the mineralization and productivity processes in the Gulf of California, despite the soil loss in the eroded regions. View Full-Text
Keywords: numerical simulation; Santa Ana winds; dust storm; WRF-CHEM; Gulf of California; dust deposition numerical simulation; Santa Ana winds; dust storm; WRF-CHEM; Gulf of California; dust deposition
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Álvarez, C.A.; Carbajal, J.N.; Pineda-Martínez, L.F.; Tuxpan, J.; Flores, D.E. Dust Deposition on the Gulf of California Caused by Santa Ana Winds. Atmosphere 2020, 11, 275.

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