Essays about: "Extinction coefficient"

Showing result 6 - 10 of 16 essays containing the words Extinction coefficient.

  1. 6. Verification of HARMONIE-AROME, ECMWF-IFS and WRF: Visibility and Cloud Base Height

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Elin Kindlundh; [2020]
    Keywords : HARMONIE-AROME; ECMWF-IFS; WRF; verification; visibility; cloud base height; HARMONIE-AROME; ECMWF-IFS; WRF; verifikation; sikt; molnbashöjd;

    Abstract : Visibility and cloud base height are two important parameters within aviation meteorology and verification of operational numerical weather prediction (NWP) models with regard to these two parameters is therefore important. Visibility is often parameterized through an extinction coefficient, which is dependent on for example liquid or ice water content, however it also depends on the humidity, precipitation intensity and particle concentration. READ MORE

  3. 7. Deriving characteristics of thin cirrus clouds from observations with the IRF lidar

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Jennifer Edman; [2019]
    Keywords : cirrus; lidar; polar regions; optical thickness; clouds; ice clouds; BSR; backscatter coefficient;

    Abstract : Cirrus clouds play an important role in radiative transfer, and thus have impact on the energy balance of the atmosphere and the climate of the Earth. Furthermore, they occur often and cover large areas globally at any time. Nevertheless, cirrus clouds are poorly studied, especially in the polar regions. READ MORE

  4. 8. Use of Satellite Data for Prediction of Weather Impact on EO-Systems

    University essay from Linköpings universitet/Institutionen för fysik, kemi och biologi

    Author : Cecilia Gullström; [2018]
    Keywords : EO-systems; Aerosols; Extinction coefficient; Satellite data; CALIPSO; EO-system; Aerosoler; Extinktionskoefficient; Satellitdata; CALIPSO;

    Abstract : To predict the performance of an electro-optical sensor system (EO-system) requires taking the weather situation into consideration. The possibility to use weather data from satellites instead of ground – and flight stations has been investigated. READ MORE

  5. 9. Development of a new dosimetry technique

    University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Author : Timo Tscharntke; [2015]
    Keywords : radiotherapy; dosimetry gel; extinction coefficient; light scattering; structured illumination; laser sheet; SLIPI; Physics and Astronomy;

    Abstract : In order to minimize the damage inflicted in healthy tissue during radiotherapy, it is vital to verify the dose absorbed by the patient. A common approach is the use of dosimetry gels in which local radiolysis processes are induced through radiation. READ MORE

  6. 10. Host - parasite interactions: : the relationship between encystment load of the freshwater pearl mussel (Margaritifera margaritifera) and genetic diversity of its host (Salmo trutta)

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper

    Author : Helena Winser; [2015]
    Keywords : ;

    Abstract : The freshwater pearl mussel (FPM, Margaritifera margaritifera) is an endangered bivalve mollusc with an obligatory larval parasitic phase on brown trout (Salmo trutta). The FPM has declined throughout its entire range due to causes such as habitat degradation, eutrophication, acidification, changed hydrology and lack of host fish. READ MORE