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Related Experiment Videos

Surface UV retrieval from satellite data.

T Tikkanen1

  • 1Finnish Meteorological Institute, Helsinki, Finland.

International Journal of Circumpolar Health
|June 13, 2000
PubMed
Summary
This summary is machine-generated.

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Satellite data and radiative transfer models help measure biologically effective ultraviolet radiation, especially in the Arctic. Challenges include variable clouds and snow

Area of Science:

  • Earth and Environmental Sciences
  • Atmospheric Science
  • Remote Sensing

Background:

  • Satellite measurements are crucial for retrieving surface ultraviolet (UV) radiation.
  • Understanding UV irradiance is vital for biological processes and human health.
  • The Arctic presents unique challenges for UV retrieval due to its specific environmental conditions.

Purpose of the Study:

  • To review satellite-based retrieval methods for biologically effective UV radiation.
  • To highlight challenges and considerations for UV retrieval in the Arctic environment.
  • To discuss the impact of snow cover on UV measurements.

Main Methods:

  • Utilizing radiative transfer models to interpret satellite measurements.
  • Analyzing retrieval methods with a focus on Arctic-specific factors.

Related Experiment Videos

  • Investigating the influence of cloudiness, low sun angles, and snow albedo.

    • Main Results:

    • High cloud variability is a primary challenge for UV retrieval accuracy.
    • Low sun angles and high UV reflectivity of snow-covered surfaces complicate measurements.
    • Snow's appearance similar to clouds poses difficulties for satellite imagery interpretation.

    Conclusions:

    • Accurate UV retrieval in the Arctic requires addressing cloud variability and snow surface properties.
    • Future efforts will incorporate meteorological model data for snow cover to improve UV albedo estimations.
    • Further research is needed to refine satellite-based UV retrieval in polar regions.