HFK: Haenam Farmland (previous name: KoFlux Haenam site)
General site details
| Site name | Haenam Farmland (previous name: KoFlux Haenam site) |
|---|---|
| AsiaFlux site code | HFK |
| Location | Haenam-gun, Jeollanamdo (Southwestern end of Korea Peninsular), Republic of Korea |
| Position | 34º33'14" N, 127º34'12" E |
| Elevation | 12m a.s.l. |
| Slope | 2º |
| Terrain type | Relatively flat except the southeast section with a slope of about 4º |
| Area | Seasonal Cropland |
| Fetch | ~200 m |
| Climate | Cfa |
| Mean annual air temperature | 13.3 ºC |
| Mean annual precipitation | 1306 mm |
| Vegetation type | Rice/Farm land |
| Dominant Species (Overstory) | - |
| Dominant Species (Understory) | - |
| Canopy height | 1 m |
| Age | - |
| LAI | 3-4 |
| Soil type | Silt loam to loam |
| URL | http://www.ncam.kr/page/koflux/database/index.php |
Observation
Eddy Covariance method (CO2)
| System | Open-path system (CO2 flux, latent heat flux) |
|---|---|
| Wind speed | 3D sonic anemometer(CSAT3) |
| Air temperature | 3D sonic anemometer(CSAT3) |
| Water vapor | Open path infrared gas analyzer (LI-7500) |
| CO2 | Open path infrared gas analyzer (LI-7500) |
| Measurement height | 20 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR3000, CSI |
| Data storage | HD |
| Original data | Raw data (and statistics) |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 15 m | Net radiometer (CNR1, Kipp & Zonen, Netherlands) |
| Global solar radiation (outgoing) | 15 m | Net radiometer (CNR1) |
| Long-wave radiation(incoming) | 15 m | Net radiometer (CNR1) |
| Long-wave radiation(outgoing) | 15 m | Net radiometer (CNR1) |
| Net radiation | 15 m | Net radiometer (CNR1) |
| PPFD (incoming) | 15 m | Quantum sensor (LI-190, Li-Cor, USA) |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Air temperature | 20 m | Temperature and RH probe (HMP45, Vaisala, Finland) |
| Humidity | 20 m | Temperature and RH probe (HMP45) |
| Soil temperature | 0 ~ ‐0.1 m | Soil thermocouple probe (TCAV, 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 | Water content reflectometer (CS615, CSI) |
| Wind speed | 20 m | 3D sonic anemometer (CSAT3, CSI) |
| Wind direction | 20 m | 3D sonic anemometer (CSAT3) |
| Barometric pressure | 20 m | Open path infrared gas analyzer (LI-7500, Li-Cor) |
| Precipitation | Ground | Tipping Bucket (TE525, CSI) |
Other
| Soil respiration | - |
| Photosynthesis | - |
| Ecological investigation | - |
Observation Period and Data Availability
| Measurement Period | from July 2002 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | 2004-2006, 2008 in AsiaFlux Database |
Contact
Joon Kim (joon [at] snu.ac.kr) Department of Landscape Architecture and Rural Systems Engineering, Seoul National University, Complex Systems 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 (ms-kang [at] ncam.kr) National Center for Agro-Meteorology 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 Grant KMIPA 2015-2023 and Weather Information
Service Engine(WISE) project, KMIPA-2012-0001-2
A3 Foresight Program of National Research Foundation of Korea
Grant(code:1-8-3) from Sustainable Water Resources Research Center of 21 Frontier R&D program
Calibration Information
Open-path gas analyzer was calibrated approximately in every 6 months with standard CO2 gases and a dew point generator(LI610, Li-Cor, USA).
Other micro-meteorological instruments are being calibrated approx. one in every 2 year.
Publication
Kim, D., Y. Lim, M. Kang, and M. Choi* (2016). "Land Response to Atmosphere at Different Resolutions in the Common Land Model over East Asia." Advances in Atmospheric Sciences, 33(3): 391-408.
Kim, K.*, M. Kang, H. Jeong, and J. Kim (2013). "Comparison of Crop Growth and Evapotranspiration Simulations between Noah Multi Physics Model and CERES-Rice Model (in Korea with English abstract)." Korean Journal of Agricultural and Forest Meteorology 15(4): 282-290.
Yuan, R., M. Kang, et al. (2010). "Expansion of the planar-fit method to estimate flux over complex terrain." Meteorology and Atmospheric Physics 110(3-4): 123-133.
Kwon, H., J. Kim, et al. (2010). "Influence of the Asian Monsoon on net ecosystem carbon exchange in two major plant functional types in Korea." Biogeosciences 7: 1493-1504.
Jang, K., S. Kang, et al. (2010). "Mapping evapotranspiration using MODIS and MM5 Four-Dimensional Data Assimilation." Remote Sensing of Environment 114(3): 657-673.
Kwon, H., T.-Y. Park, et al. (2009). "Seasonality of Net Ecosystem Carbon Exchange in Two Major Plant Functional Types in Korea." Asia-Pacific Journal of Atmospheric Sciences 45(2): 149-163.
Kang, M., S. Park, et al. (2009). "Evapotranspiration from a Deciduous Forest in a Complex Terrain and a Heterogeneous Farmland Under Monsoon Climate." Asia-Pacific Journal of Atmospheric Sciences 45(2): 175-191.
Jang, K., S. Kang, et al. (2009). "Evaluation of Shortwave Irradiance and Evapotranspiration Derived from Moderate Resolution Imaging Spectroradiometer (MODIS)." Asia-Pacific Journal of Atmospheric Sciences 45(2): 233-246.
Ryu, Y., S. Kang, et al. (2008). "Evaluation of land surface radiation balance derived from moderate resolution imaging spectroradiometer (MODIS) over complex terrain and heterogeneous landscape on clear sky days." Agricultural and Forest Meteorology 148(10): 1538-1552.
Moon, S.-K., Y. Ryu, et al. (2007). "Quantifying the Spatial Heterogeneity of the Land Surface Parameters at the Two Contrasting KoFlux Sites by Semivariogram." Korean Journal of Agricultural and Forest Meteorology 9(2): 140-148.
Park, S.B., Moon, S.K., Kim, J., Hong, J., Lee, Y., Lee, H.C., Choi, Y. (2006) “Haenam” KoFlux site, AsiaFlux Newsletter, Issue No. 21, 19-21
Lee, Y.-H., Kim, J., Hong, J. (2006) The simulation of water vapor and carbon dioxide fluxes over irrigated farmland by modified Soil-Plant-Atmosphere model (mSPA), Proceedings of International workshop on flux estimation over diverse terrestrial ecosystems in Asia, AsiaFlux workshop 2006, Chiang Mai, Thailand, 37
Hong, J.K. et al.(2003), Inferring Regional Scale Surface Heat Flux around FK KoFlux Site: From One Point Tower Measurement to MM5 Mesoscale Model, Korean Journal of Agricultural and Forest Meteorology, 5(2), 138-149.
Lee, H.C., Hong, J., Cho, C.H., Choi, B.C., Oh, S.N., Kim, J. (2003) Surface exchange of energy and carbon dioxide between the atmosphere and a farmland in Haeman, Korea, Korean Journal of Agricultural and Forest Meteorology, Vol. 5, No. 2, 61-69