|
|
Frequency and composition of fog in the Czech Republic
Esterlová, Jana ; Hůnová, Iva (advisor) ; Stráník, Vojtěch (referee)
This thesis deals with the occurrence of fog in The Czech Republic and its composition. It engages in current status and also historical evolution (since about the second half of 20th century). The thesis is divided into two parts. The first part is the research of the professional literature, which sums up the results of realized studies, explains terms connected with fog and describes methods used for fog quantification. The second part contains results of my own study for the city station Prague-Libuš (1971-2015) and mountain station Churáňov (Šumava, 1961- 2015). The fog is an often underestimated phenomenon, which has provable influence on water balance and contributes to the atmospheric deposition, especially in mountain ranges, where the occurrence is higher. The composition of fog is being changed during the observed time. The amplest ions are in most cases NO3 - , NH4 + , SO4 2- , Cl- a Ca2+ . In connection with decreasing general air pollution shows, it goes also to reduction the concentrations of pollutants in the fog. Because of the lower content of these particles the occurrence of fog might be also lower in the cities and former highly-polluted regions caused by the lower number of condensation nuclei, which is noticeable on Prague-Libuš. In connection with global warming there are...
|
guest ::
RSS feed.