Data Base of LARC Neutron Monitor

LARC Neutron Monitor (alrenative name Antarctic Laboratory for Cosmic Rays) is situated in King George island - Antarctica
It is a joint project between the University of Chile,
the Institute for Interplanetary Space Physics of the National Research Council of Italy
and the Roma Tre University,

Latitude: -62.20S
Longitude: -58.96W
Altitude: 40 m
Rigidity (1965): 3.0 GV
Standard atmoshperic pressure: 980.0 mb
Barometric coefficient (2004): -0.74%/mb

See Source and Conditions for Data use
Prof. Enrique G. CORDARO
Laboratorio Radiación Cósmica - Dep. Física - FCFM - UChile
Av. Blanco Encalada 2008
P.O. Box 487-3 Santiago - Chile
Tel: 56-2-67-84-383, 56-2-55-72-295
Fax: 56-2-69-67-359, 56-2-55-72-295
E-mail Prof. Enrique G. Cordaro
E-mail Chief of Engineering Enrique Olivares Canouet

Database contents of LARC neutron monitor data starting from January 1991 (6NM-Supermonitor). The interval of accumulation: hourly and and 1-minute since January 1991. An interactive access is possible to this database and FTP as well.

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 pressure (U). Hourly data are presented uncorrected (U) and corrected for atmospheric pressure (P). Pressure corrected hourly data are kept as original (O) and corrected (C).