| Station name: | Oulu Neutron Monitor |
|---|---|
| Station short name: | OULU |
| Start date: | 1964-04-01 |
| End date: | None |
| Head organization: | Sodankyla Geophysical Observatory, University of Oulu, SGO-OTY, 90014 University of Oulu, Finland |
| Principal investigator: | Ilya Usoskin |
| Contact person: | Ilya Usoskin |
| Latitude [°]: | 65.0544 |
| Longitude [°]: | 25.4681 |
| Altitude [m] asl: | 15.0 |
| Geomagnetic cutoff rigidity [GV]: | 0.8 |
| Average count rate [s-1] during solar activity minimum: | 115.0 |
| Average count rate [s-1] during solar activity maximum: | 85.0 |
| Reference atmospheric pressure [mbar]: | 1000.0 |
| Barometric coefficient [%/mbar]: | 0.74 |
| Information on detector housing: | Pyramid-shaped warmed roof => no snow accumulation. Material: aluminum |
| Type of counter tube: | Chalk River neutron counter BP28 |
| Number of counter tubes: | 9 |
| Information on detector: | Moderator: Polyethylene tube, wall thickness 2.0 cm, Reflector: Polyethylene 7.6 cm, 3 sections X 3 counters |
| Atmospheric pressure sensor: | Vaisala digital barometer VPB 200, resolution 0.01 mb, stable (routine calibration by mercury barometer), claimed 0.1 mb within the operated temperature range (15-30 C) |
| Information about clock: | GPS |