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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Aeolian transport of sand and dust is driven by turbulent winds thatfluctuate over a broad range of temporal and spatial scales. However, commonlyused aeolian transport models do not explicitly account for such fluctuations,likely contributing to substantial discrepancies between models andmeasurements. Underlying this problem is the absence of accurate sand fluxmeasurements at the short time scales at which wind speed fluctuates. Here, wedraw on extensive field measurements of aeolian saltation to develop amethodology for generating high-frequency (25 Hz) time series of total(vertically-integrated) saltation flux, namely by calibrating high-frequency(HF) particle counts to low-frequency (LF) flux measurements. The methodologyfollows four steps: (1) fit exponential curves to vertical profiles ofsaltation flux from LF saltation traps, (2) determine empirical calibrationfactors through comparison of LF exponential fits to HF number counts overconcurrent time intervals, (3) apply these calibration factors to subsamples ofthe saltation count time series to obtain HF height-specific saltation fluxes,and (4) aggregate the calibrated HF height-specific saltation fluxes intoestimates of total saltation fluxes. When coupled to high-frequencymeasurements of wind velocity, this methodology offers new opportunities forunderstanding how aeolian saltation dynamics respond to variability in drivingwinds over time scales from tens of milliseconds to days.

High-frequency measurements of aeolian saltation flux: Field-based methodology and applications