state of the art greenhouse gas and trace gas measurements at lutjewad, groningen
DESCRIPTION
State of the art Greenhouse gas and Trace gas measurements at Lutjewad, Groningen. Measuring CO 2 , CH 4 , CO, N 2 O, SF 6 and 222 Radon to determine their atmospheric concentrations and source/sink functions. PhD research outline by Sander van der Laan - PowerPoint PPT PresentationTRANSCRIPT
State of the art Greenhouse gas and Trace gas measurements
at Lutjewad, Groningen
Measuring CO2, CH4, CO, N2O, SF6 and 222Radon to determine their atmospheric concentrations and source/sink functions
PhD research outline by Sander van der Laan
Center for Isotope Research, Groningen
16 December 2005
Lutjewad, Groningen
QuickTime™ and aDV - PAL decompressor
are needed to see this picture.
Research goals
To quantify the fluxes of CO2, CH4 and N2O using eddy covariance, radon and gradient measurements
To monitor atmospheric concentrations of CO2, CH4, CO, N2O, SF6
Measurement site
Highly interesting/complex measuring site
North:
0.5 km reclamation area with salt tolerant grasses10 km mostly tidal flat area (distance to schiermonnikoog)
South:
Cropland/grassland
Measurement site
QuickTime™ and aMotion JPEG OpenDML decompressor
are needed to see this picture.
Measurement site
North/North-West (Wadden Sea)
North
Mostly tidal flats
North-West
More open water
Measurement site
South/South-east
Mostly (cropland/grassland)
Important parameters:
Land use, harvest, cattle, fertilization, crop density
Planned measurements at Lutjewad
• Atmospheric concentration measurements of CO2, CH4, CO, N2O, SF6 (GC) at 3 different heights (gradient)
• 222Radon concentrations (radon detector)
• 222Radon flux measurements (radon flux chambers)
• CO2 flux measurements (eddy covariance)
• CO2, CH4 and N2O flux measurements (radon/gradient)
• O2 concentration measurements (oxzilla)
In short:
Available Equipment/data
Modified Agilent 6890N gas chromatograph
Concentrations of CO2, CH4, CO, N2O, SF6
At 7 m, 40 m and 60 m
Available Equipment/data
Available Equipment/data
Eddy covariance (CO2 flux measurements)
Licor 7500 CO2/H2O analyzer
Gill 3D-sonic T15 wind meter
-150.00
0.00
150.00
0.00 6.00 12.00 18.00 24.00
Heat Flux, H
20-Flux [W/m
2 ]
-25.00
0.00
25.00
CO
2-Flux [umol/m
2 /s]
Heat Flux H2O-Flux CO2-Flux
Average fluxes during 3 weeks of measurements, all wind directions
CO2 uptake (growth period)
Preliminary measurements
y = -0.0253x - 0.7774
-30.00
0.00
30.00
0.00 500.00 1000.00
Incident Visible Radiation [W/m 2]
CO
2-Flux [umol/m
2/sec]
1/2 Hr average CO2 fluxes during 3 weeks of measurements, Land
Inversion layer effect
Preliminary measurements
y = -0.0183x + 0.8602
-30.00
0.00
30.00
0.00 500.00 1000.00
Incident Visible Radiation [W/m 2]
CO
2-Flux [umol/m
2/sec]
1/2 Hr average CO2 fluxes during 3 weeks of measurements, Sea
Preliminary measurements
Available Equipment/data
222Radon activity detectorRadon concentrations
222Radon- and CO2 flux chambersRadon flux measurements
Available Equipment/data
mB
q/m
3
N W
S O N
Available Equipment/data
14C isotope measurements (14C/CO ratio)
Meteo data(wind direction, rain, temperature, solar radiation)
Agricultural data, sea-water level, soil research
Questions/ suggestions for research
Available Equipment/data
mB
q/m
3
N W
S O N