Data Base of Haleakala Neutron Monitor
Haleakala Neutron Monitor is situated in Haleakala, Hawaii
It is a project of Institute for the Study of Earth, Oceans, and Space
Altitude: 3030 m
Rigidity (1965): 12.91 GV
Standard atmoshperic pressure: 830 mb
Barometric coefficient (2004): -0.70 %/mb
SF=100 (The mean count is around 337000/hour or 56000/min,)
Dr. Clifford Lopate
Morse Hall, Univ. of New Hampshire
39 College Road, Durham, NH 03824-3525
E-mail Dr. Clifford Lopate
Personalia Dr. Clifford Lopate
Database contents of Haleakala neutron monitor data starting from February 1991 (18NM64).
The interval of accumulation: hourly from 1991; besides, 1-minute data from 1991.
An interactive access is possible to this database and FTP
Interactive access Data in this regime are
available in graphical and in digital presentation as well. All
graphical plots are given relative to February 1987.
Access by FTP
One-minute data are in directory ftp_NM1, hourly data in
directory ftp_NM. Ground Level Enhancement (GLE) data are in the
GLE directory. One-type data are presented in their own Format:
hourly data in format C, 1-minute data in W format, and GLE data
in GLE format.
There are three types of 1-minute data: neutron
monitor data corrected for atmospheric pressure (C), atmospheric
pressure (P), and neutron monitor data uncorrected for atmospheric
Hourly data are presented uncorrected
(U) and corrected for atmospheric pressure (P).
Pressure corrected hourly data are kept as original (O)
and corrected (C).