Publication Abstracts

Huang et al. 2019

Huang, Y., J.F. Kok, R.L. Martin, N. Swet, I. Katra, T.E. Gill, R.L. Reynolds, and L.S. Freire, 2019: Fine dust emissions from active sands at coastal Oceano Dunes, California. Atmos. Chem. Phys., 19, no. 5, 2947-2964, doi:10.5194/acp-19-2947-2019.

Sand dunes and other active sands generally have a low content of fine grains and, therefore, are not considered to be major dust sources in current climate models. However, recent remote sensing studies have indicated that a surprisingly large fraction of dust storms are generated from regions covered by sand dunes, leading these studies to propose that sand dunes might be globally relevant sources of dust. To help understand dust emissions from sand dunes and other active sands, we present in situ field measurements of dust emission under natural saltation from a coastal sand sheet at Oceano Dunes in California. We find that saltation drives dust emissions from this setting that are on the low end of the range in emissions produced by non-sandy soils for similar wind speed. Laboratory analyses of sand samples suggest that these emissions are produced by aeolian abrasion of feldspars and removal of clay-mineral coatings on sand grain surfaces. We further find that this emitted dust is substantially finer than dust emitted from non-sandy soils, which could enhance its downwind impacts on human health, the hydrological cycle, and climate.

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BibTeX Citation

  author={Huang, Y. and Kok, J. F. and Martin, R. L. and Swet, N. and Katra, I. and Gill, T. E. and Reynolds, R. L. and Freire, L. S.},
  title={Fine dust emissions from active sands at coastal Oceano Dunes, California},
  journal={Atmos. Chem. Phys.},

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RIS Citation

ID  - hu00300e
AU  - Huang, Y.
AU  - Kok, J. F.
AU  - Martin, R. L.
AU  - Swet, N.
AU  - Katra, I.
AU  - Gill, T. E.
AU  - Reynolds, R. L.
AU  - Freire, L. S.
PY  - 2019
TI  - Fine dust emissions from active sands at coastal Oceano Dunes, California
JA  - Atmos. Chem. Phys.
VL  - 19
IS  - 5
SP  - 2947
EP  - 2964
DO  - 10.5194/acp-19-2947-2019
ER  -

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