Sökning: "DOAS"
Visar resultat 16 - 20 av 24 avhandlingar innehållade ordet DOAS.
16. Application of Passive DOAS for Studies of Megacity Air Pollution and Volcanic Gas Emissions
Sammanfattning : Optical Remote Sensing Techniques offer the opportunity to, in real-time, obtain line averaged measurements of gases in the lower and upper atmosphere. These techniques easily offer themselves to automatization, which increases their usability for e.g. LÄS MER
17. Optical remote sensing of the middle atmosphere from satellites - DOAS retrievals of O3 and NO2 from Odin/OSIRIS limb-scattering measurements
Sammanfattning : .... LÄS MER
18. Volatile Hydrocarbons in Ambient Air. Gas Chromatographic Assessment, Emissions and Human Exposure
Sammanfattning : Hydrocarbons in ambient air constitute a potential health risk for a large number of individuals. The work reported in this thesis focusses on human exposure to volatile hydrocarbons in ambient air. The analytical determinations were made by adsorbent sampling followed by thermal desorption and gas chromatography. LÄS MER
19. Determination of Volatile Hydrocarbons in Urban Air
Sammanfattning : In the complex hydrocarbon mixture in urban air, the alkenes and arenes are of particular interest with respect to impact on health and environment. Knowledge of hydrocarbon concentrations in urban air is essential for the assessment and prevention of health hazards and photochemical oxidant formation. LÄS MER
20. Space-Time Parameter Estimation in Radar Array Processing
Sammanfattning : This thesis is about estimating parameters using an array of spatially distributed sensors. The material is presented in the context of radar array processing, but the analysis could be of interest in a wide range of applications such as communications, sonar, radio astronomy, seismology, and medical diagnosis. LÄS MER