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What is Isohel?

Published in Geography 2 mins read

An isohel is a line on a map connecting points that receive the same amount of sunshine, typically measured in hours per day. It is a valuable tool for understanding the distribution of solar energy across a region and can be used for various purposes, including:

  • Solar energy planning: Isohels help determine the optimal locations for solar power plants and other solar energy applications.
  • Agriculture: Understanding the duration of sunshine is crucial for crop planning and maximizing yield.
  • Urban planning: Isohels can be used to design buildings and infrastructure that optimize natural light exposure.
  • Climate research: Analyzing isohel patterns over time can reveal changes in solar radiation and their impact on climate.

Example:

Imagine a map showing isohels for a particular day. One isohel might connect points that receive 8 hours of sunshine, while another connects points that receive 10 hours. This information can be used to understand the geographic distribution of solar energy and plan activities accordingly.

Key points to remember about isohels:

  • They are influenced by factors like latitude, season, and topography.
  • They can vary significantly even within a small area.
  • They are a valuable tool for understanding the spatial distribution of solar energy.