CFK: Cheongmicheon Farmland Site
General site details
| Site name | Cheongmicheon Farmland Site |
|---|---|
| AsiaFlux site code | CFK |
| Location | Yeuju, Republic of Korea |
| Position | 37º 9' 35" N, 127º 39' 10"E |
| Elevation | 141 m a.s.l. |
| Slope | 0º |
| Terrain type | Flat |
| Area | - |
| Fetch | - |
| Climate | Warm Continental Climate(Dwa) |
| Mean annual air temperature | 11.5ºC (2008) |
| Mean annual precipitation | 1170mm (2008) |
| Vegetation type | Rice paddy |
| Dominant Species (Overstory) | Oryza sativa |
| Dominant Species (Understory) | - |
| Canopy height | -1 m |
| Age | - |
| LAI | - |
| Soil type | - |
Observation
Eddy Covariance method (CO2)
| System | Open-path system |
|---|---|
| Wind speed | RM81000 3D Sonic Anemometer (RMYoung, USA) |
| Air temperature | RM81000 3D Sonic Anemometer (RMYoung, USA) |
| Water vapor | KH20 Hygrometer(Campbell Sci., USA) |
| CO2 | |
| Measurement height | 4 m / 10 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR1000, Campbell Sci., Inc., USA |
| Data storage | HD |
| Original data | Raw and ststistics |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | - | |
| Global solar radiation (outgoing) | - | |
| Long-wave radiation(outgoing) | - | |
| Long-wave radiation(outgoing) | - | |
| Net radiation | 10 m | Net Radiometer (CRN2, Kipp & Zonen, Netherlands) |
| PPFD (incoming) | 10 m | Quantum Sensor (LI-190, Li-cor, USA) |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 4 m / 10 m | Vaisala Weather Transmitter (WXT510, Vaisal, Finland) |
| Humidity | 4 m / 10 m | Vaisala Weather Transmitter (WXT510, Vaisal, Finland) |
| Soil temperature | 0.1m / 0.3m | TCAVs (Campbell Sci. , USA) |
| Soil heat flux | - | |
| Soil water content | 0.1m / 0.3m | CS615 (Campbell Sci. , USA) |
| Wind speed | 4 m / 10 m | Vaisala Weather Transmitter (WXT510, Vaisala, Finland) |
| Wind direction | 4 m / 10 m | Vaisala Weather Transmitter (WXT510, Vaisala, Finland) |
| Barometric pressure | 4 m / 10 m | Vaisala Weather Transmitter (WXT510, Vaisala, Finland) |
| Precipitation | 4 m/10 m | Vaisala Weather Transmitter (WXT510, Vaisala, Finland) |
| CO2 concentration | - |
Other
| Ecological investigation | - |
| Photosynthesis | - |
| Soil respiration | - |
Observation Period and Data Availability
| Measurement Period | August 2008 till date |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Jung-Hoon Lee (ljh0817 [at] hsc.re.kr) Yeon-Kil Lee (sugawon [at] hsc.re.kr) Sung Won Jung (swjung [at] hsc.re.kr) Hydrological Survey Center Leadersplaza II B/D 601, 2223-2 Daehwa-dong, Ilsanseo-gu, Goyan-si Gyeonggi-do, 411-805, Republic of Korea Phone : +82-31-920-0800 Fax: +82-31-920-0890 www.hsc.re.kr
Infrastructure
Tower, Electrical power(AC), facilities for communication
Research Fund
Evapotranspiration Measurement Projgect(Hydrological Survey Center)
Calibration Information
KH2O were calibrated approximately every 6 months with a dew point generator(LI610, Li-Cor, USA). Other micrometeorological instruments are being calibrated every 6 months.