Proposed launch sites, frequency of measurements, number of payloads annually (48 - 64 total):
| Site | Latitude | Frequency | Number/year | Activity |
|---|---|---|---|---|
| Utqiagvik, Alaska | 78 °N | Seasonally | 4-6 | active |
| Boulder, Colorado | 40 °N | every 2-3 weeks | 20 | active |
| Hilo, Hawaii | 20 °N | Seasonally | 4-6 | active |
| Koror, Palau / Paramaribo, Suriname | 7 °N / 6 °N | Seasonally | 4 | planned additions |
| La Réunion Island, France | 21 °S | Seasonally | 4-6 | IOP; active |
| Lauder, New Zealand | 45 °S | every 2 months | 6 | active |
| Scott Base, Antarctica | 78 °S | Annually | 2 | active |