For the audio browser usersMove to the content areaUserLogin
 
MSE: Mase paddy flux site

General site detail (updated 12 September 2011)
 Site name
 Mase paddy flux site
 AsiaFlux site code
 MSE
 Location Tsukuba, Ibaraki, Japan
 Position 36º 03' 14.3" N, 140º 01' 36.9" E (GARMIN)
 Elevation 13 m above sea level 
 Slope N/A
 Terrain type
 Almost flat
 Area About 200 ha (2 km by 1 km along Kokai river)
 Fetch 700 m (Easterly wind) - 1000 m (southerly wind)
 (Easterly wind prevails in most of the growing period  except in mid-summer when the southerly wind  prevails.)
 Climate Warm and humid climate
 Mean annual air temperature
 13.7 ºC 
 Mean annual precipitation
 1200 mm 
 Vegetation type
 paddy field
 Domestic species (Overstory)
 rice (Oryza sativa L.; cultivar Koshihikari)
 Dominant species (Understory)
 N/A
 Canopy height
 1.2 m (maximum)
 Age N/A
 LAI About 5.0 m2 m-2 (maximum)
 Soil type
 grayed lowland paddy soil (Cultivated Soil  Classification Committee, 1995)

Observations
Eddy Covariance method (CO2)
 System Open-path method (August 1999 - present)
 Closed-path method (2004 - present)
 Wind speed 
 Sonic anemometer-thermometer, DA600-62AX (KAIJO)
 Air temperature
 Sonic anemometer (DA-600, Kaijo)
 Water vapor
 E009B (Advanet, Okayama, Japan (August 1999 -  November 2001)
 LI7500 (LI-COR) (December 2001 - present)
 LI7000 (LI-COR) (2004 - present)
 CO2 E009B (Advanet, Okayama, Japan (August 1999 -  November 2001)
 LI7500 (LI-COR) (December 2001 - present)
 LI7000 (LI-COR) (2004 - present)
 Measurement height
 -
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 DRM3 (TEAC, Tokyo, Japan) (August 1999 - April 2008)
 CR3000 (Campbell) (May 2008 - present)
 Data storage
 Magneto-optical disc (August 1999 - April 2008)
 Compact flash memory card (May 2008 - present)
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 2.5 m 4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
 Global solar 
radiation (outgoing)
 2.35 m 4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
 Long-wave radiation(incoming) 
 2.35 m 4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
  Long-wave radiation(outgoing) 2.35 m 4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
 Net radiation
 2.35 m 4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
 PPFD (incoming)
 2.35 m 4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
 PPFD (outgoing)
 2.35 m  4 component net radiometer, CNR1  (Kipp&Zonen, The Netherlands) (August 1999 -  April 2009).
 4 component net radiometer, MR-40 (Eko,  Tokyo,Japan) (May 2009 - present).
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - Quantum sensor, LI190SL (LI-COR) equipped  with a shadow blade (Eko) (2005-2006).
 Quantum sensor, LI190SL (LI-COR) equipped  with a rotating shadow blade PRB-100 (Prede,  Tokyo, Japan) (July 2009 - present). 
 Air temperature
 3.85 m Platinum resistance thermometer (100 ohm)  equipped with a home-made ventilator (August  1999 - 15 November 2000). 
 Platinum resistance thermometer, HMP45A
 (Vaisala, Helsinki, Finland) equipped with a 
 home-made ventilator (16 November 2000 -
 present).
 Humidity 3.85 m Wet-bulb temperature was measured with a  platinum resistance thermometer (100 ohm)  equipped with a home-made ventilator (August  1999 - 15 November 2000).
 Relative humidity was measured with a
 capacitive  moisture sensor, HMP45A (Vaisala)
 equipped  with a home-made ventilator (16
 November 2000 -  present).
 Soil temperature
 -1, -5, -10, -20, -40 cm  T-type thermocouple, hand-made
 Soil heat flux
 1 cm below the  soil surface Thermopile-type heat flux plate, MF-81 (Eko)  (August 1999 - April 2008).
 Thermopile-type heat flux plate, MF-180M (Eko)  (May 2008 - present).
 Soil water 
 content 
 0-15 cm below the ground (April 2000 - April 2002). 0-2.5 cm, 0-5 cm, 0-10 cm, 0-20 cm and 0-30cm below the ground (May 2002 - present). Soil moisture probe, CS-615 (Campbell Scientific
 Inc., Logan, UT, USA) (April 2000 - April
 2002).Time-domain reflectometory, TDR-100
 (Campbell) (May 2002-present)
 Wind speed
 3.75, 2.55, 1.95,1.35, 0.75 m The measurement heights were changed with  rice growth. Cup anemometer, AF-750 (Makino,  Tokyo, Japan) (August 1999 - April 2011).
 Wind direction
 4.4 m Wind vane, VF016 (Makino) (August 1999 - April 2011)
 Barometric 
 pressure
 1.5 m Capacitive pressure transducer, PTA427
 (Vaisala)(August 1999 - March 2008).
 Capacitive pressure transducer, PTB210 
 (Vaisala)(April 2008 - present).
 Precipitation -  Bucket-type rain gauge
 (TE525MM, Texas Electronics)
 CO2 concentration
 3.85 m and  1.25 m (August  1999-  September  2003. The  measurement  heights were  changed with  rice growth.) 3.8  m and several  lower heights  (May 2004 -  present). Non-dispersive infrared gas analyzer, ZFU (Fuji
 Electric, Tokyo, Japan) (August 1999 -
 September 2003).
 Non-dispersive infrared gas analyzer, LI-6262
 (LI-COR) (May 2004 - present)
 Water depth  - Sonic-type displacement sensor, UD-310  (Keyence,Osaka, Japan)
Other
 CH4 Gradient (half-hourly) 2004-2009
 NH3 Gradient (weekly) 2007-2011
 Soil respiration
 -
 Photosynthesis -
 Ecological investigation
 -
 
Observation Period and Data Availability
 Measurement Period
 from July 1999 to present
 Measurement Frequency
 Continuous
 Data Availability
 2001-2006 in AsiaFlux Database
 Contact
 Akira Miyata (amiyat [at] niaes.affrc.go.jp)
 Masayoshi Mano (mano [at] chiba-u.jp)
 Keisuke Ono (onok [at] affrc.go.jp)
 Agro-Meteorology  Division,National Institute for Agro-Environmental  Sciences (NIAES)
 3-1-3, Kannondai, Tsukuba, Ibaraki 305-8604, Japan
 TEL: + 81-29-838-8207 FAX: + 81-29-838-8211
  http://ecomdb.niaes5.affrc.go.jp/
 Calibration Information
 The open-path analyzers were calibrated in laboratory at least twice a  year, before and after the rice growing season,with zero gas and  standard CO2 gas from cylinders and a dew point generator, LI-610 (LI-  COR). The closed-path gas analyzer was calibrated in situ once a day  with zero gas and standard CO2 gas from cylinders.
 Research fund
 Global Warming Initiative Program (FY2002-2005; FY 2006- 2009;  FY2010-2014) by the Ministry of Agriculture, Forestry and  Fisheries of  Japan
 Global Environment Research Coordination System (FY 2007-2011) by  the Ministry of the Environment, Japan
 Global Environmental Research Fund B-3 (FY2000-2002) and S-1  (FY2003-2006) by the Ministry of the Environment, Japan
 Infrastructure
 4.0m tower, Electrical power: AC

 
Powered by NetCommons2 The NetCommons Project