English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

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

Fine dust emissions from active sands at coastal Oceano Dunes, California