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What is the cloud cover fraction?

Published in Cloud Cover 1 min read

The cloud cover fraction represents the proportion of a given area covered by clouds. According to provided information, cloud fraction is the percentage of each pixel in satellite imagery or each grid box in a weather or climate model that is covered with clouds. A cloud fraction ranges from 0 to 1, where a cloud fraction of 1 indicates complete cloud cover, and 0 indicates a completely clear sky.

Here's a breakdown:

  • Definition: Cloud cover fraction is a measure of how much of a particular area is covered by clouds.
  • Range: The value ranges from 0 to 1. This can also be represented as a percentage, from 0% to 100%.
  • Interpretation:
    • 0 (or 0%) signifies a completely clear sky with no clouds.
    • 1 (or 100%) signifies that the area is completely covered by clouds.
    • Values in between represent partial cloud cover. For example, 0.5 (or 50%) indicates that half of the area is covered by clouds.
  • Application: Cloud fraction is used in various fields, including:
    • Satellite imagery analysis.
    • Weather forecasting.
    • Climate modeling.

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