CRK: Cheorwon Rice paddy
General site details
| Site name | Cheorwon Rice paddy |
|---|---|
| AsiaFlux site code | CRK |
| Location | Dongsong-eup, Cheorwon-gun, Gangwon-do, Republic of Korea |
| Position | 38° 12'5" N, 127° 15'2" E |
| Elevation | 181 m a.s.l. |
| Slope | 0° |
| Terrain type | Flat |
| Area | N/A |
| Fetch | N/A |
| Climate | Warm Continental Climate (Dwa) |
| Mean annual air temperature | 10.2℃ (2011) |
| Mean annual precipitation | 1394 mm (2011) |
| Vegetation type | Rice paddy |
| Dominant Species (Overstory) | Oryza sativa |
| Dominant Species (Understory) | N/A |
| Canopy height | ~ 1m |
| Age | Annual Plant |
| LAI | ~ 6 (±1), Max in August |
| Soil type | N/A |
Observation
Eddy Covariance method (CO2)
| System | Enclosed (CO2 flux, latent heat flux) and Open path (CH4 flux) |
|---|---|
| Wind speed | 3D sonic anemometer (CSAT3) |
| Air temperature | 3D sonic anemometer (CSAT3) |
| Water vapor | Enclosed path infrared gas analyzer (LI7200) |
| CO2 | Enclosed path infrared gas analyzer (LI7200) |
| Measurement height | 10 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min. |
| Data logger | CR3000 (Campbell Sci., USA), Analyzer interface unit (LI-7550, Li-Cor) |
| Data storage | HD |
| Original data | Raw and statistics |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation (incoming) | 10 m | Net radiometer (CNR4, Kipp & Zonen, Netherlands) |
| Global solar radiation (outgoing) | 10 m | Net radiometer (CNR4) |
| Long-wave radiation (incoming) | 10 m | Net radiometer (CNR4) |
| Long-wave radiation (outgoing) | 10 m | Net radiometer (CNR4) |
| Net radiation | 10 m | Net radiometer (CNR4) |
| Direct and diffuse PPFD | 10 m | Quantum sensor (PQS1 with rotating band, K&Z) |
| Air temperature | 10 m | Temperature and RH probe (HMP155, Vaisala, Finland) |
| Humidity | 10 m | Temperature and RH probe (HMP155) |
| Soil temperature | 0 ~ -0.1 m, -0.1 ~ -0.2 m | Multiparameter smart sensor (CS655, Campbell Sci., Inc., USA) |
| Soil heat flux | -0.1 m | Heat flux plate (HFP01, Hukseflux Thermal Sensors B.V., Netherlands) |
| Soil water content | 0 ~ -0.1 m, -0.1 ~ -0.2 m | Multiparameter smart sensor (CS655) |
| Wind speed | 10 m | 3D sonic anemometer (CSAT3, CSI) Wind monitor (05103, R.M. Young Co., USA) |
| Wind direction | 10 m | 3D sonic anemometer (CSAT3) Wind monitor (05103) |
| Barometric pressure | 10 m | Enclosed path infrared gas analyzer (LI7200, Li-Cor) |
| Precipitation | 1 m | Tipping Bucket (WDR-205, Wedaen Co., Korea) |
| Water temperature | Ground | Thermocouple probe (TCAV, CSI) |
| Water depth | Ground | Water level gauge (BYL-EV250, Korea) |
Fluxes of non-CO2 gases
| Gas | CH4 |
| Method | Open path CH4 analyzer (LI-7700, Li-Cor) |
| Measurement height | 10 m |
| Data logger | Analyzer interface unit (LI-7550, Li-Cor) |
| Data storage | Raw data (and statistics) |
Other
| Photosynthesis | Portable chamber (LI6400, Li-Cor) |
| Canopy structure | Digital camera, LED sensor |
| Continuous spectral reflectance | Jaz spectrometer (Ocean optics, USA) |
| Sun-induced chlorophyll fluorescence | QEpro (Ocean optics, USA) |
Observation Period and Data Availability
| Measurement Period | From May 2015 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Youngryel Ryu (yryu[at]snu.ac.kr) Department of Landscape Architecture and Rural Systems Engineering, Seoul National University Bld.200/Rm.9217, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea Phone: +82-2-880-4871 Fax: +82-2-873-5113 URL: http://environment.snu.ac.kr/
Joon Kim (joon[at]snu.ac.kr) Department of Landscape Architecture and Rural Systems Engineering, Seoul National University Complex System Science Laboratory, Bld.36/Rm.108, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea Phone: +82-2-880-4663 Fax: +82-2-871-0230
Minseok Kang (mc-kang[at]ncam.kr) National Center for AgroMeteorology Bld.36/Rm.109, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea Phone: +82-2-871-0232 Fax: +82-2-871-0230
Infrastructure
Tower, Electrical power (AC)
Research Fund
Korea Meteorological Administration Research and Development Program under Weather Information Service Engine (WISE) project, KMIPA-2012-0001-2 National Research Foundation of Korea (NRF-2016M1A3A3A02018195) National Research Foundation of Korea (NRF-2015R1A2A1A16074924)
Publication
N/A