Simulations of sea fog case impacted by air–sea interaction over South China Sea

Autor: Liguo Han, Shuqin Zhang, Feng Xu, Jingjing Lü, Zebin Lu, Guiling Ye, Siqi Chen, Jianjun Xu, Jiaming Du
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Frontiers in Marine Science, Vol 9 (2022)
Druh dokumentu: article
ISSN: 2296-7745
DOI: 10.3389/fmars.2022.1000051
Popis: A sea fog event in the South China Sea was simulated using a coupled ocean–atmosphere model (WRF for the atmosphere and ROMS for the ocean). Offshore and onshore visibility, liquid water content, air temperature, humidity, and wind speed observations and MICAPS data were utilized to validate the model results. The results of the coupled model were also compared with those of the uncoupled atmosphere model. Sea fog duration in the coupled model was closer to offshore and onshore observations, but the uncoupled model emptily forecasted offshore fog, and underreported onshore fog. Air–sea temperature difference played an important role in regulating the formation and dissipation of sea fog. The decrease of sea surface temperature in the coupled model cooled the low-level atmosphere, promoted the condensation of low-level water vapor, and increased the low-level water vapor. The decrease of air–sea temperature difference strengthened the low-level stable stratification, which weakened the horizontal wind speed and favored the formation and development of sea fog. Rising wind speed was the major driver of fog dissipation.
Databáze: Directory of Open Access Journals