GDP: Guandu Nature Park Flux Station
General site details
| Site name | Guandu Nature Park Flux Station |
|---|---|
| AsiaFlux site code | GDP |
| Location | Guandu Natural Park, Taipei City, Taiwan |
| Position | 121° 28' E, 25° 07' N |
| Elevation | 4 m above sea level |
| Slope | 0 % |
| Terrain type | Grass marsh |
| Area | |
| Fetch | |
| Climate | Cfa |
| Mean annual air temperature | 23.0 °C |
| Mean annual precipitation | 2405.1mm |
| Vegetation type | Grass |
| Dominant Species (Overstory) | Brachiaria mutica (Tower 1); Phragmites australis (Tower 2) |
| Dominant Species (Understory) | - |
| Canopy height | 1.2m (Tower 1); 3.0m (Tower 2) |
| Age | |
| LAI | |
| Soil type | Clay |
Observation
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 3.5 m | CNR-1 |
| Global solar radiation (outgoing) | 3.5 m | CNR-1 |
| Long-wave radiation(incoming) | 3.5 m | CNR-1 |
| Long-wave radiation(outgoing) | 3.5 m | CNR-1 |
| Net radiation | 3.5 m | CNR-1 |
| PPFD (incoming) | 3.5 m | LI-190 |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 3.5 m | HMP-45C (2010/12/21-) J-type thermocouple (2015/10/28-) |
| Humidity | 3.5 m | HMP-45C (2010/12/21-) |
| Soil temperature | 10cm/20cm | J-type thermocouple (2011/6/1-2014/4/9) |
| Soil heat flux | 10cm/20cm | HFP01 (2011/6/1-2014/4/9) |
| Soil water content | 10cm/20cm | CS-616 (2011/10/12-) |
| Wind speed | 3.5m | YOUNG81000 (2010/11/26-2014/3/26) CSAT-3 (2014/3/27-) |
| Wind direction | 3.5m | YOUNG81000 (2010/11/26-2014/3/26) CSAT-3 (2014/3/27-) |
| Barometric pressure | 3.5m | LI-7500 (2010/11/26-) |
| Precipitation | 3.5m | Tipping bucket type Rain Gauge, No. 34-T (OTA KEIKI SEISAKUSHO CO., LTD., Japan) |
| CO2 concentration | 3.5m | LI-7500 (2010/11/26-) |
| H2O concentration | 3.5m | LI-7500 (2010/11/26-) |
Other
| Lysimeter | - |
| Throughfall | - |
| Sapflow | - |
| Soil respiration | - |
URL
| http://homepage.ntu.edu.tw/~jjuang/ |
Observation Period and Data Availability
| Measurement Period | 2010/11/26~(now) (Tower 1); 2012/12/09~2015/08/04 (Tower 2) |
|---|---|
| Measurement Frequency | 10Hz |
| Data Availability | - |
Contact
Jehn-Yih Juang (jjuang@ntu.edu.tw)
Department of Geography, National Taiwan University
No 1 Sec 4 Roosevelt Rd, Taipei 10617, TAIWAN
Infrastructure
Brachiaria mutica (Tower 1); Phragmites australis (Tower 2)
Research Fund
Ministry of Science and Technology, Taiwan National Taiwan University
Publication
1. Lin K-M, Juang J-Y and Chang L-F (accepted), Improving Estimation of Bowen Ratio for Application in Air Quality Models by Integrating a Simplified Analytical Expression with Measurement Data, Journal of Applied Meteorology and Climatology
2. Lee S-C, Fan C-J, Wu Z-Y and Juang J-Y (2015) Investigating effect of environmental controls on dynamics of CO2 budget in a subtropical estuarial marsh wetland ecosystem, Environmental Research Letters,10 025005.