NOTE: Climax data after Sept. 1980 has been adjusted upwards by about 1%. See the descriptive file (in the Data & Plots section) for details. Would you like to receive update notices every month? Send email HERE.

Climax and Haleakala neutron monitor operations and research activities are supported by the National Science Foundation (Grant ATM-0339527). This SPDS node was made possible through funding by the National Aeronautics and Space Administration.
Principal Investigator: Clifford Lopate. Send email HERE if you need more recent data.


 Data & Plots 

Datasets available here are from our monitors at Haleakala, Hawaii (IGY and Supermonitor, 1991-present) [Photo], Huancayo, Peru (IGY, 1953-1992), Climax (IGY, 1951-present)[Photo].

Neutron Monitor Locations around the world, plus a Text File with station info.
What is a neutron monitor and why should I care?
Other cosmic ray sites:
Indices of Global Geomagnetic Activity, GeoForschungsZentrum Potsdam, Observatorium Niemegk, Adolf-Schmidt-Observatorium für Geomagnetismus
University of Delaware Neutron Monitors .
Moscow Neutron Monitor! (Near-real-time data) .
Other recent neutron monitor rates and a short description of Cosmic Rays at World Data Center A, Boulder.
SPIDR, a new neutron monitor data archive, funded by NOAA and NASA/SPDS; over 1700 station-years of hourly value data from more than 117 stations for the years 1953 to the present.


If you use our Neutron Monitor data in a scientific publication, please acknowledge us, "National Science Foundation Grant ATM-0339527". We would be interested in receiving a copy of any publication resulting from your use of these data. We welcome any suggestions for improvement, and any "testimonials" would be appreciated!

Please feel free to contact me if you have any questions.
   University of New Hampshire
   phone: (603) 862-5101        fax:(603) 862-3584
   email: lopate@ulysses.sr.unh.edu


Go to the Space Physics Data System home page.
Go to the LASR home page.

Any opinions found here are not those of the University of New Hampshire, the EOS Center or the Department of Physics.

last modified 21 December 2006.