CS616 Calibrations
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CS616 Calibrations Christoph Rüdiger
description
CS616 Calibrations. Christoph Rüdiger. Equations (Western et al., 2005). Laboratory Set Up. Example: Temperature Influence. P 25 dependent C T. Soil Specific C T. Example: Temperature Influence. Optimisation. Example: Soil Influence. Optimisation. Wang and Schmugge (1980). - PowerPoint PPT Presentation
Transcript of CS616 Calibrations
CS616 Calibrations
Christoph Rüdiger
Equations (Western et al., 2005)
2525 TCPP T
obs
osPC T 25
)25(1
2525
Ts
ToPP obs
N4.0
0.04.0
0.0
25
PP
PPN
Laboratory Set Up
Logger
Temp. sensor
CS616
Load cell
Top view Side view
CS615 Lid (temp. corr.)
Climate chamber
Example: Temperature Influence
P25 dependent CT
y = 0.0094x + 16.496
R2 = 0.9454
y = 0.11x + 23.074
R2 = 0.9859
y = 0.1619x + 28.899
R2 = 0.9917
15
20
25
30
35
40
45
0 5 10 15 20 25 30 35 40 45 50 55 60
Temperature [C]
Per
iod
[s]
Soil Specific CT
Example: Temperature Influence
Optimisation N4.0
0.04.0
0.0
25
PP
PPN
obs
obs
nRMSE
2
Example: Soil Influence
Optimisation
N4.0
0.04.0
0.0
25
PP
PPN
Wang and Schmugge (1980)
Equations
N4.0
0.04.0
0.0
25
PP
PPN
N
5.05.0
5.04.05.0
N
for N ≤ 0.5
for N > 0.5
Optimisation
Soil Specific P0.4
Catchment-wide Soil Temperature
150
d
i
dT T
Tr
ii
d TT72
1
Catchment-wide Soil Temperature
Example Calculations: S2 to K6
• Average error: 0.73°C• Maximum error: 2.43°C• =0.27 °C
M6
