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On the barometric pressure coefficient for cosmic-ray neutrons

Authors
Journal
Journal of Atmospheric and Terrestrial Physics
0021-9169
Publisher
Elsevier
Publication Date
Volume
11
Issue
1
Identifiers
DOI: 10.1016/0021-9169(57)90034-x

Abstract

Abstract From the cosmic-ray neutron intensity recorded at Mount Washington, N.H., during 1954–1955, an accurate determination has been made of the barometric pressure which best measures the average air mass above this mountain, where high wind velocities are prevalent. The results indicate that the existing pitot tube system for compensating for the pressure deficiency produced by the airflow over the mountain is reliable to an estimated standard deviation of ±0.03 in. Hg. It also appears that the barometric pressure correction for the neutron intensity at any location is one of the largest sources of error in studying primary cosmic-ray intensity-time variations from the time variations of the neutron intensity deep within the atmosphere.

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