Published March 3, 2026 | Version 1.5
Dataset Open

iDust-ut: A Global Wind Erosion Threshold Dataset for Enhanced Dust Forecasting

Authors/Creators

  • 1. ROR icon Institute of Atmospheric Physics

Description

Dataset Description:

This dataset provides global monthly dust emission threshold velocity (ut) at 1°×1° resolution, developed through multi-source data integration including ground observations, satellite retrievals, and reanalysis products.

Contents:

  • Contains complete source code for dataset generation (ut/genut)
  • iDust-ut dataset derived from multi-source observations and reanalysis (ut/rlt/iDust_ut.nc)
  • Model-adaptive ut dataset for iDust, CAMS, ERA5, and MERRA-2 with 10-meter wind speed bias compensation(ut/rlt/*ms_ut*.nc)

Key Features:

  • iDust-ut validated against field observations (R=0.93, RMSE=0.8 m/s)
  • Model-adaptive ut for improved dust forecasting
  • Ready-to-use NetCDF4 format with CF-compliant metadata

Files

ut.zip

Files (1.8 MB)

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Additional details

Dates

Created
2025-08-23
Updated
2025-10-01
Update for readability: (1) Add dataset _FillValue; (2) remove __MACOSX folders.
Updated
2026-01-26
add reame
Updated
2026-03-03
(1) Corrected time coordinate to comply with CF Convention, using climatological bounds (2003–2024). (2) Added CF-standard metadata attributes (standard_name, axis, bounds, climatology_bounds, etc.). (3) Applied a 2-degree nearest-neighbor buffer beyond the Ginoux et al. (2001) dust source mask to iDust_ut, with a 5-degree linear transition to a global default value of 6.5 m s⁻¹; Model-adaptive ut dataset for iDust, CAMS, ERA5, and MERRA-2 inherit the same spatial coverage through scaling.