TY  - Data
T1  - A dataset of global sand drift
A1  - LI Guoshuai
A1  - Li Xin
DO  - 10.12072/ncdc.desert.db7640.2026
PY  - 2026
DA  - 2026-07-13
PB  - National Cryosphere Desert Data Center
AB  - The sand drift potential (DP, in vector units (VU)) is calculated byDPi=∑U 2×(U-Ut)/100×twhere i represents the 16 wind directions (N, NNE, NE, NEE, E, EES, ES, ESS, S, SSW, WS, WWS, W, WWN, NW and NNW); U is the mean wind speed in each speed category with an effective wind speed greater than or equal to the threshold wind speed Ut at 10 m height; Ut = 5.3 and 5.8 m s-1 is the threshold wind speed corresponding to the reference diameter d = 0.25 and 0.30 mm, which is the minimum wind speed at the 10 m height to cause sand in saltation; t is time wind blew, expressed as a percentage in a wind summary. The 2 m s-1 bin is adopted in each direction of effective winds ≥5.3 m s-1 (≥5.8 m s-1), corresponding to mean wind speeds of 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 and 33 m s-1 (7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31 and 32 m s-1), and the sum of these bins is the final DP in the wind direction. Note that these mean wind speeds have been expressed in knots by the conversion factor (1 knot = 0.5144 m s-1) to ensure the valid classification of wind energy environments (low energy, The obtained DPs in the 16 wind directions are projected onto the due-east (RDP_E) and due-north (RDP_N) directions to calculate the RDP, RDD and WDV:RDP = sqrt(RDP_E 2 + RDP_N 2)RDD = 180 + 57.296atan2(RDP_E ⁄ RDP_N)WDV = RDP / DPNotably, the divisor used in calculating the percentage of effective winds from different directions is the total hour number of Julian years (8760 hours for common years or 8784 hours for leap years). The wind speed and direction data calculated by 10 m u-component of wind and 10 m v-component wind were from the 0.25° ERA5 hourly wind data during 1940-2025 and the 0.1° ERA5-Land hourly wind data during 1950-2025. The drift potential (DP) represents the sum of DPs from the 16 wind directions. The resultant drift potential (RDP) indicates net sand transport potential under different wind directions, while the resultant drift direction (RDD) refl
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/c402a154-f318-4678-9d27-0f0daa59a1a2
ER  -