Impact of Improved Surface Flux Parameterization on Simulation of Radiation Fog Formation in the Yangtze River Delta, China DOI

Naifu Shao,

Chunsong Lu, Yubin Li

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(9)

Published: April 30, 2025

Abstract Meteorological conditions within the boundary layer play significant roles in radiation fog formation, which typically occur under stable conditions. The stratification surface are represented by stability parameter ( ζ ), calculated as ratio of reference height z to Monin‐Obukhov length L (i.e., = / ). Current schemes exhibit uncertainties strong > 1). Grachev2007 scheme for 1 and Li2014 Li2015 calculating implemented into Weather Research Forecasting model coupled with Chemistry (WRF‐Chem). Two successive events Yangtze River Delta simulated compare improved default scheme. Both high‐pressure characterized clear sky light wind during nighttime. results indicate that dominate before improves threat scores formation. Regarding flux, due reduced thermal resistance parameterization, increased heat exchange enhances cooling from sensible flux 1, is conducive turbulent mixing, dynamic drag reduces speed 1. This weakens contribution shear kinetic energy, ultimately promoting findings this paper applicable simulations other regions, such plain areas covered grassland, cropland, or vegetation, providing support improving simulation.

Language: Английский

Impact of Improved Surface Flux Parameterization on Simulation of Radiation Fog Formation in the Yangtze River Delta, China DOI

Naifu Shao,

Chunsong Lu, Yubin Li

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(9)

Published: April 30, 2025

Abstract Meteorological conditions within the boundary layer play significant roles in radiation fog formation, which typically occur under stable conditions. The stratification surface are represented by stability parameter ( ζ ), calculated as ratio of reference height z to Monin‐Obukhov length L (i.e., = / ). Current schemes exhibit uncertainties strong > 1). Grachev2007 scheme for 1 and Li2014 Li2015 calculating implemented into Weather Research Forecasting model coupled with Chemistry (WRF‐Chem). Two successive events Yangtze River Delta simulated compare improved default scheme. Both high‐pressure characterized clear sky light wind during nighttime. results indicate that dominate before improves threat scores formation. Regarding flux, due reduced thermal resistance parameterization, increased heat exchange enhances cooling from sensible flux 1, is conducive turbulent mixing, dynamic drag reduces speed 1. This weakens contribution shear kinetic energy, ultimately promoting findings this paper applicable simulations other regions, such plain areas covered grassland, cropland, or vegetation, providing support improving simulation.

Language: Английский

Citations

0