Table 1.
Desired product requirements and their status in the final technical specifications.
| Product requirements | Achieved? | |
|---|---|---|
| 1. Usage | ||
| Deployment | From helicopter and small vessel | yes |
| Handling | 2–3 people | yes |
| Operation | 1–2 years | not fully tested |
| 2. Transport | ||
| Shipping | 6-foot insulated aluminium container | yes |
| 3. Environment | ||
| Air temperature | −35 to 40 °C | yes |
| Water temperature | −2 to 20 °C | yes |
| 4. Design | ||
| Dimensions | 6 foot containers covered by 4 solar panels and windmill |
yes |
| Weight | < 1200 kg per unit | yes |
| 5. Power production | ||
| Atmosphere and land unit | up to 2000 Wh per day | yes |
| Atmosphere and marine unit | up to 1200 Wh per day | yes |
| Battery bank | > 30 kWh. Capacity to sustain the entire system for 12–18 days without charging. |
yes |
| 6. Example of data collection setup | ||
| Atmosphere | Air and skin temperature Atmospheric pressure PAR Net and global radiation Relative humidity Wind speed and direction Momentum fluxes Sensible and latent heat fluxes CO2 fluxes CH4 fluxes |
yes |
| Land | Air temperature Relative humidity Air pressure Net and global radiation PAR Snow depth Precipitation Wind speed and direction Sensible and latent heat flux Surface temperature Soil temperatures CO2 fluxes (EC and chamber) CH4 fluxes (chamber) Phenocams (timing of snowmelt, plant phenology and insect activity) |
yes |
| Limnic | Water temperature Water level pressure Conductivity Water turbidity pH O2 Light intensity Photos (stream reach and in-stream) |
Fully implemented in 2022 |
| Ocean | Ice keel (sea ice thickness) Currents Temperature Salinity Tide PAR Fluorescence (chl) |
yes |
| 7. Data transmission | ||
| Data storage | All data collected are stored on local server | yes |
| Cable | Data from the marine sensors are transmitted by inductive link and 4 mm steel cable to the server in the container with a distance up to 1–2 km. | yes |
| WiFi | Data from the field (land and limnic) is transmitted via WiFi to the server in the container | yes |
| WiFi connection between units (ca 25 km) | yes | |
| Satellite telemetry | Average data (hourly) is transmitted (by FTP) once a day | yes |