spatial assessment of atmosphere-ecosystem exchanges via ... · dept. of plant ecology dept. of...
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![Page 1: Spatial assessment of atmosphere-ecosystem exchanges via ... · Dept. of Plant Ecology Dept. of Micrometeorology Spatial assessment of atmosphere-ecosystem exchanges via micrometeorological](https://reader033.vdocuments.site/reader033/viewer/2022060414/5f127450800d890f890d6279/html5/thumbnails/1.jpg)
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
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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
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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]
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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:
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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)
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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
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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
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Dept. of MicrometeorologyDept. of Plant Ecology
Automatic Weather Stations
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Dept. of MicrometeorologyDept. of Plant Ecology
KMA Weather information as supporting data
Satellite image Synoptic weather chart
AWS of KMA
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Dept. of MicrometeorologyDept. of Plant Ecology
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