base line

From Glossary of Meteorology
#The reference line in a measurement by triangulation.

In meteorological observations it has several applications, for example, 1) the horizontal distance from the observation point to the location of a ceiling-light projector; 2) the horizontal distance between a ceilometer projector and detector; and 3) the bearing, distance, and slope of the line between the observational points in a double-theodolite observation.

  1. In dual-Doppler analysis, the length and bearing of the line separating the radars.


Copyright 2024 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact [email protected]. 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.