Sökning: "microwave remote sensing"

Visar resultat 21 - 25 av 35 avhandlingar innehållade orden microwave remote sensing.

  1. 21. Remote sensing of small-scale structures of atmospheric water vapor

    Författare :Lubomir Gradinarsky; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tomography; climate change; delay gradients; propagation delay; microwave radiometry; global positioning system; meteorology; water vapor;

    Sammanfattning : .... LÄS MER

  3. 22. Modelling Microwave Backscattering from Sea Ice for Synthetic-Aperture Radar Applications

    Författare :Anders Carlström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; synthetic-aperture radar; microwave; surface roughness; sea ice; backscattering models;

    Sammanfattning : The spaceborne synthetic-aperture radar (SAR) is considered one of the key instruments for monitoring the ice cover in polar oceans and regional seas. This thesis is concerned with applications of electromagnetic scattering theory and SAR system theory for modelling the response of different types of sea ice in SAR imagery. LÄS MER

  4. 23. Ground based measurements of upper atmospheric CO and H2O using microwave radiometry

    Författare :Peter Forkman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mesosphere; carbon monoxide; microwaves; radiometry; remote sensing; water vapour;

    Sammanfattning : Long series of continuous measurements of middle and upper atmospheric constituents are needed to be able to understand the anthropogenic influence on the atmosphere. Phenomena like ozone depletion and the enhanced greenhouse effect are examples where the role of human activities has to be well investigated in order to make the right decisions of necessary changes in our way of life. LÄS MER

  5. 24. A database of single scattering properties for hydrometeors at microwave and sub-millimetre frequencies

    Författare :Robin Nils Ekelund; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; sub-millimetres; Hydrometeors; microwaves; clouds; single scattering properties; satellites.; remote sensing; water vapour;

    Sammanfattning : Remote sensing observations of hydrometeors (ice or liquid water particles) at microwave and sub-millimetre wavelengths provide important input to numerical weather forecasting through data assimilation and give insight to cloud processes that are relevant for climate prediction. The utilization of such measurements requires information on the single scattering properties (SSP), i. LÄS MER

  7. 25. Validation and time series analysis of global stratospheric data sets

    Författare :Ashley Jones; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; OSIRIS; MIPAS; remote sensing; data assimilation; Trend; stratosphere; ozone; linear regression; Odin; validation;

    Sammanfattning : The depletion of ozone from the stratosphere and the impact of global warming have been identified as phenomena caused as a result of anthropogenic activity. Scientists are thus trying to find quicker and more reliable ways to analyse these environmental problems. LÄS MER