TY  - Data
T1  - A dataset of blowing snow event visibility classification for the Makitasi Wind Zone, China, 2024–2025
A1  - MA Lei
A1  - Hu Zhixuan
A1  - Zhao Jing
A1  - Li Pengbo
A1  - Zhao Qin
A1  - Pan Xingyu
A1  - Li Taizhi
DO  - 10.12072/ncdc.db7472.2026
PY  - 2026
DA  - 2026-08-26
PB  - National Cryosphere Desert Data Center
AB  - Low visibility induced by blowing snow disasters is a key factor affecting traffic safety and operational efficiency on high-grade highways. Fine-grained visibility grading data are of great significance for model training, control strategy formulation, and the deployment of roadside edge computing devices. Based on continuous videos from four roadside fixed monitoring cameras and visibility instrument observations along the G3015 Keketa Expressway (K264+700–K272+700) in the Mayitas Wind Zone, Xinjiang, from November 2024 to March 2025, this dataset was constructed by first temporally filtering blowing snow events, then extracting frames at a frequency of 1 frame per minute, and finally applying manual grading annotation. The dataset consists of one compressed archive containing 7 folders corresponding to 7 visibility levels (0–100 m, 100–200 m, 200–300 m, 300–400 m, 400–500 m, 500–1000 m, >500m and NULL), comprising 14,678 roadside camera images with a spatial resolution of 640×480 pixels. It also includes one visibility instrument data file in tabular format, containing time, wind speed, wind direction, minimum visibility, and average visibility. This dataset employed dual independent annotation followed by expert review. Missing and anomalous data caused by external factors were excluded without interpolation, ensuring the accuracy, authenticity, and reliability of the annotated observations. This dataset can be used to characterize the spatiotemporal distribution and variation of highway visibility under blowing snow conditions, serving traffic meteorological warning and dynamic expressway control in blowing snow-prone areas.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/e483058f-0cda-40cf-9d4e-b2de153b0586
ER  -