Terrain and its Effects on Fog Occurrence

0537185 - ÚI 2022 RIV NL eng J - Článek v odborném periodiku
Hůnová, I. - Brabec, Marek - Malý, Marek - Dumitrescu, A. - Geletič, Jan
Terrain and its Effects on Fog Occurrence.
Science of the Total Environment. Roč. 768, 10 May 2021 (2021), č. článku 144359. ISSN 0048-9697. E-ISSN 1879-1026
Institucionální podpora: RVO:67985807
Klíčová slova: fog * terrain * Romania * generalized additive model * trend * seasonality * seasonality deformation * 1981–2017 * altitude * slope * curvature
Obor OECD: Meteorology and atmospheric sciences
Impakt faktor: 10.754, rok: 2021
Způsob publikování: Omezený přístup
http://dx.doi.org/10.1016/j.scitotenv.2020.144359

Fog is a very complex phenomenon, relevant to both atmospheric physics and chemistry, contributing to the atmospheric inputs of both nutrients and pollutants to the environment. Fog occurrence is affected by numerous factors. The aim of this study is to examine the effects of terrain on fog occurrence. Namely, we studied in detail how altitude, slope and landform influence the probability of fog occurrence using the generalized additive model. In particular, we investigated how different explanatory variables might modify (deform) the trend and the seasonal component of the probability of fog occurrence. We used long-term records of daily fog occurrence measured in 1981–2017 at 56 professional meteorological stations in Romania, reflecting different environments and geographical areas. The altitude of the sites under review ranged between 13 and 2,504 metres above sea level, the coverage of localities at different altitudes being highly uneven. Out of the terrain variables considered, the most decisive influence was found to be altitude. We have included information on slope and landform, which refined and bettered the basic model. Our model results indicated a significant decrease in the probability of fog occurrence over the examined period. The behaviour of fog differed according to the altitude, the most profound effects being observed for ground-level fog and fog above flat terrain. The probability of fog occurrence at different altitudes varied mostly in summer and autumn, whereas it was very similar in winter.
Trvalý link: http://hdl.handle.net/11104/0314928