Articles | Volume 23, issue 21
Research article
09 Nov 2023
Research article |  | 09 Nov 2023

Effect of the boundary layer low-level jet on fast fog spatial propagation

Shuqi Yan, Hongbin Wang, Xiaohui Liu, Fan Zu, and Duanyang Liu

Data sets

ERA5 hourly data on pres-sure levels from 1940 to present H. Hersbach, B. Bell, P. Berrisford, G. Biavati, A. Horányi, J. Muñoz Sabater, J. Nicolas, C. Peubey, R. Radu, I. Rozum, D. Schepers, A. Simmons, C. Soci, D. Dee, and J.-N. Thépaut

National Ground Meteorology Observation Data China Meteorological Data Service Centre

An Introduction to Himawari-8/9 – Japan's New-Generation Geostationary Meteorological Satellites ( K. Bessho, K. Date, H. Masahiro, A. Ikeda, T. Imai, H. Inoue, Y. Kumagai, T. Miyakawa, H. Murata, T. Ohno, A. Okuyama, R. Oyama, Y. Sasaki, Y. Shimazu, K. Shimoji, Y. Sumida, M. Suzuki, H. Taniguchi, H. Tsuchiyama, D. Uesawa, H. Yokota, and R. Yoshida

Model code and software

A description of the advanced research WRF Version 3 (NCAR Technical Note NCAR/TN-475+STR) W. C. Skamarock, J. B. Klemp, J. Dudhia, D. O. Gill, D. M. Barker, M. G. Duda, X. Huang, W. Wang, and J. G. Powers

Short summary
In this study, we quantitatively study the effect of the boundary layer low-level jet (BLLJ) on fast fog spatial propagation; i.e., the fog area expands very fast along a certain direction. The wind speed (10 m s−1) and direction (southeast) of the BLLJ core are consistent with fog propagation (9.6 m s−1). The BLLJ-induced temperature and moisture advections are possible reasons for fast fog propagation. The propagation speed would decrease by 6.4 m s−1 if these advections were turned off.
Final-revised paper