Thermal equator

From Glossary of Meteorology



thermal equator


  1. Same as heat equator.

  2. (Rare.) The belt around the earth that is bounded by the mean annual isotherms of 27°C (80°F); also, the middle line of this belt.

  3. (Rare.) The belt of hottest temperatures around the earth as it annually migrates with the inclination of the sun.


Copyright 2024 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.