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Dept. of MicrometeorologyDept. of Plant Ecology
Spatial assessment of atmosphere-ecosystem
exchanges via micrometeorological measurements
and footprint modeling
Atmospheric turbulent energy flux measurements
in South Korea 2010
Peng Zhao and Johannes LüersDept. of Micrometeorology
Dept. of MicrometeorologyDept. of Plant Ecology
Objectives
§ To understand the sensible and latent heat fluxes in such a complex terrain as Haean Basin, South Korea
§ To better understand the energy exchange above farmlands (rice fields and dry crops) during the whole growing period including monsoon seasons in Korea
§ To determine reliable evapotranspiration and net ecosystem exchange (NEE) of carbon above farmlands
§ To determine reliable information about near surface atmospheric stratification conditions, including convective events in Haean Basin
Dept. of MicrometeorologyDept. of Plant Ecology
rice
-60
-40
-20
0
20
40
60
120 140 160 180 200 220 240 260 280
potato
-60
-40
-20
0
20
40
60
120 140 160 180 200 220 240 260 280
Plant production studies in Haean in 2009Steve Lindner
CO
2flu
x [µ
mol
m-2
s-1]
Day of year
CO
2flu
x [µ
mol
m-2
s-1]
Dept. of MicrometeorologyDept. of Plant Ecology
dry field
rice field
WSEN
panorama of rice field
SITE SELECTION
Monsoon□□□■■■■■ ■■■■■■■■ ■■■■■■■■ ■■■■■■■■ ■■■■■■■■ ■■■■■■■■
May June July Aug. Sept. Oct.
Schedule 2010：
Dept. of MicrometeorologyDept. of Plant Ecology
Eddy covariance complex
ultrasonic anemometer open path
CO2/H2O analyzer
net radiometer
Parametera Instrument Sampling
frequency
Wind vector Ultrasonic
anemometer
(USA-1)
20 Hz
Sonic
temperature
Humidity (H2O
concentration)
open path
CO2/H2O
analyzer
(LiCOR 7500)CO2
concentration
Net radiation Net radiometer
(NR lite)
Dept. of MicrometeorologyDept. of Plant Ecology
Flux corrections§ Coordinate rotation: Planar fit, double rotation
§ Buoyuancy correction (Schotanus/Liu)
§WPL correction
§ Spectral correction (Moore)
''51.0'''' qwTTwTw s -=
( )úúû
ù
êêë
é××-×
××+×
××+=
turb
p
pccc Bo
qTc
Tc
HqwF
161.0161.11''
lr
Eddy covariance complex
Raw.data
Binary files
Planar fit parameters
Covariance files
QA/QC files
Results files
TK2
Data processing and QA/QC
Dept. of MicrometeorologyDept. of Plant Ecology
Footprints with TerraFex
- Raw Covariances- QA/QC (flags 1-5)- Resultfile (flags 1-5)
TK2 outputTerraFex
FOOTPRINT
Matrix Landuse Matrix Roughness Length
Footprint – data quality Footprint – land use
Dept. of MicrometeorologyDept. of Plant Ecology
Automatic Weather Stations
Dept. of MicrometeorologyDept. of Plant Ecology
KMA Weather information as supporting data
Satellite image Synoptic weather chart
AWS of KMA
Dept. of MicrometeorologyDept. of Plant Ecology
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