Open Access
Table 1.
Riometer locations and operating frequencies. (SGO riometers are used only in Sect. 5).
| Riometer | Code | Geodetic lat. (°N) | Geodetic long. (°E) | Invariant latitude at 50 km altitude (°N) | Freq. (MHz) |
|---|---|---|---|---|---|
| NORSTAR Riometers, Canada | |||||
| Contwoyto Lake | cont | 65.75 | −111.26 | 73.2 | 30.0 |
| Dawson | daws | 64.05 | −139.11 | 66.0 | 30.0 |
| Eskimo Point | eski | 61.11 | −94.05 | 71.1 | 30.0 |
| Fort Churchill | fchu | 58.76 | −94.08 | 68.9 | 30.0 |
| Fort Simpson | fsim | 61.76 | −121.23 | 67.5 | 30.0 |
| Fort Smith | fsmi | 60.03 | −111.95 | 67.6 | 30.0 |
| Gillam | gill | 56.38 | −94.64 | 66.6 | 30.0 |
| Island Lake | isll | 53.86 | −94.66 | 64.2 | 30.0 |
| Fort McMurray | mcmu | 56.65 | −111.21 | 64.5 | 30.0 |
| Pinawa | pina | 50.20 | −96.04 | 60.5 | 30.0 |
| Rabbit Lake | rabb | 58.23 | −103.68 | 67.3 | 30.0 |
| Rankin Inlet | rank | 62.82 | −92.11 | 72.8 | 30.0 |
| Taloyoak | talo | 69.54 | −93.55 | 79.5 | 30.0 |
| Lancaster University IRIS Riometer, Finland | |||||
| Kilpisjärvi | kil | 69.05 | 20.79 | 66.0 | 38.2 |
| SGO riometers, Finland (subset) | |||||
| Abisko | abi | 68.40 | 18.90 | 65.4 | 30.0 |
| Ivalo | iva | 68.55 | 27.28 | 65.2 | 29.9 |
| Jyväskylä | jyv | 62.42 | 25.28 | 59.0 | 32.4 |
| Rovaniemi | rov | 66.78 | 25.94 | 63.5 | 32.4 |
| Sodankylä | sod | 67.42 | 26.39 | 64.1 | 30.0 |
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