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Direct radiation

Direct radiation is the component of total radiation (or solar energy) received at the Earth's surface that directly enters the atmosphere.

In detail

The total radiation (or solar energy) received at the Earth's surface consist of two components:

1. Direct radiation and

2. Diffuse radiation.

Direct radiation refers to that solar radiation that has directly entered the atmosphere (as opposed to that which entered the atmosphere by reflecting from clouds, gases, aerosols etc.).

Find out more

 

  • Direct radiation is one of the UKCP09 Weather Generator variables, measured in watts per square metre (W/m2).
  • An overview of the outputs from the UKCP09 Weather Generator is provided in  of the Climate Change Projections report.
  • Further details are available in  and  of the Weather Generator report.