| System | Open-path method |
| Wind speed | Sonic anemometer-thermometer, DA600-3T (KAIJO) |
| Air temperature | |
| Water Vapor | OP-IRGA, LI7500 (LI-COR) |
| CO2 | |
| Measurement height | 2.0 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR23X (Campbell) |
| Data storage | MO |
| Original data (Raw data or statistics) | Raw data and statistics |
| Observation items | Levels / Depth | Instrument |
| Global solar radiation (incoming) | 2.4m | Radiometer MR-40 (Eko) |
| Global solar radiation (outgoing) | 2.4m | Radiometer MR-40 (Eko) |
| Long-wave radiation (incoming) | 2.4m | Radiometer MR-40 (Eko) |
| Long-wave radiation (outgoing) | 2.4m | Radiometer MR-40 (Eko) |
| Net radiation | 2.4m | Radiometer MR-40 (Eko) |
| PPFD (incoming) | 2.4m | Quantum sensor, IKS-27 (Koito) |
| PPFD (outgoing) | - | - |
| Direct/diffuse radiation | - | - |
| Direct/diffuse PPFD | - | - |
| Air temperature | 2.0 m | Platinum resistance thermometer, HMP45A (Vaisala) |
| Humidity | 2.0 m | Capacitive moisture sensor, HMP45A (Vaisala) |
| Soil temperature | 0.05 m | T-type thermocouple (handmade) |
| Soil heat flux | 0.05 m | Heat plate, MF-81 (Eko) |
| Soil water content | 0.15 m | CS615 (Vaisala) |
| Wind speed | 2.0 m | Sonic anemometer-thermometer, DAT600 (KAIJO) |
| Wind direction | - | - |
| Barometric pressure | - | - |
| Precipitation | - | TERC* routine |
| CO2 concentration | - | - |
| *TERC: Terrestrial Environment Research Center, University of Tsukuba | ||
| Soil respiration | Photosynthesis porometer LI-6400R (Li-cor) |
| Photosynthesis | Photosynthesis porometer LI-6400 (Li-cor) |
| Ecological Investigation | Monthly (from Apr to Oct) |