|
| |
|
| |
|
|
Characteristic of ambient particulate metter in a small settlement
Domasová, Markéta ; Braniš, Martin (advisor) ; Mihaljevič, Martin (referee) ; Hůnová, Iva (referee)
Selected characteristicsof ambientDarticulatematterin a small seftlement correlationbetweenwindspeed and elementsAs and Se. The significant negativecorrelationwas found for Pb, Zn and V. but the valuesof correlation coeÍficientswere lower. Fig.3 Averageconcentrationsof selectedclcmcnts(og.r-t)in PM16andPM25fractions during3.4.- 21.4.2003meesuredatthebackgroundlocelityandin thecentral partofZloukovice 0 PMu SlBackgound aVillaqe C o C d c . v The PM16problemis indicatedin the Czech Republicalso by the over- reachingof the limit value(50 pg.m-t24-hconcentrationof PM16),which came into force on 1.1.2005.This limit was exceededin 27 from 42 cases in monitoredvillage in the winter periodsand in 2 casesin the summerperiod. During l9-days lastingcampaignin 2003 PMro valueswere measuredabove 50 pg.m' in 5 cases in the village centerand in 2 casesat the background locality. 4. Conclusion The presentdisertationthesis confirmed a basic presumption.that aspirableaerosolfractionconcentrationsin small settlementsare significant environmentalproblenr.Emission reductionstrategiesshould be therefore preparedfor and implementedin not only largeurbanand industrialareasbut also in numeroussmallsettlements. The researchcarriedout confirmeda known fact thatthere is a uniform level of the atmosphericaerosolconcentrationsover the...
|
|
| |
|
| |
|
| |
|
| |
|
|
Is rhime a factor contributing significantly to the total atmospheric deposition?
Krištof, Tomáš ; Hůnová, Iva (advisor) ; Stráník, Vojtěch (referee)
The aim of this bachelor thesis is to try to answer the question whether the rime can have signifiant contribution to atmospheric deposition by researching avaiable literature. Atmospheric deposition is a process which transmits substances from the atmosphere to the earth's surface . One of its components is a sedimentary deposition (fog, frost , rime ) . Rime does not occur throughout the whole year , and its formation is dependent upon frequently changing factors. Yet it can be shown that the concentration of substances in rime may exceed or at least occupy a significant share of atmospheric deposition in certain locations under favorable period for its emergence. Key words: Atmospheric deposition, rime
|
|
|
Is rhime a factor contributing significantly to the total atmospheric deposition?
Krištof, Tomáš ; Hůnová, Iva (advisor) ; Stráník, Vojtěch (referee)
The aim of this thesis is to research available literature to try to answer the question whether rime can have a significant share in atmospheric deposition. Atmospheric deposition is a proces in which compounds are transferred from air to the surface. One of its forms is horizontal deposition (fog, frost, rime). Rime is not present for the entire year and its occurrence is dependent on factors whose values can change frequently. It can still be proved that rime can represent significant share in atmospheric deposition in certain localities during favourable periods for its emergence. Key words: Atmospheric deposition, rime
|
|
|
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 ::
