8-10 June 2016
Asia/Bangkok timezone

Variation in Cosmic Ray Count Rate at Doi Inthanon with Atmospheric Water Vapor

Jun 9, 2016, 9:30 AM
15m
Room E1

Room E1

Oral presentaion Environmental Physics, Atmospheric Physics, Geophysics and Renewable Energy Session XVII

Speaker

Pradiphat Muangha

Description

The Princess Sirindhorn Neutron Monitor at Doi Inthanon, Thailand provides important information about high-energy cosmic rays from space. Both the neutron monitor (NM) and Bare (lead-free) neutron counters detect the variation of intensity in the interplanetary cosmic rays. In addition, the bare detector to neutron monitor count rate ratio (Bare/NM) provides information on the particle spectrum. We found that variation in Bare/NM is strongly anti-correlated with atmospheric water vapor (Ew) as inferred from the Global Atmospheric Data Assimilation (GDAS). In the present work, we develop a correction to Bare/NM for water vapor pressure. The results of comparison of the Ew from the GDAS database with another database will be discussed.

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