Progress ELDAS “Point” Validation (ELDAS Progress Meeting, 10-11 December 2003, Madrid) Cor Jacobs, Herbert Ter Maat, Eddy Moors.
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Progress ELDAS “Point” Validation(ELDAS Progress Meeting, 10-11 December 2003, Madrid)Cor Jacobs, Herbert Ter Maat, Eddy Moors
Contents
Tasks Data collection Preliminary validation DWD results (TERRA, 2
months) CarboEurope Sites Scinty Sites Flevopolder
ELDORADO and SAFFRAN To be solved
“Point” Validation: Tasks
WP4100: Check validity of ELDAS product is there a relation between model output and
reality? Extra (agreed during 1st progress meeting):
radiation ELDORADO versus SAFFRAN radiation
Validation sites and data collection progress
CarboEurope
Autonomous experiments
PLAPScintillometerExperiments, WUBALTEX
Model data production for validation
Flux Sites 1: CarboEurope Sites
• Forest sites
• On tall towers
• Various fluxes, hardly any soil moisture observations need moisture indicators (, ,…)
Net Radiation: CarboEurope Sites / DWD model
-20
0
20
40
60
80
122 142 162 182
DOY
R
n (
kJ
cm
-2)
Hyytiala
Hesse
Loobos
Tharandt
CarboEurope Data
-20
0
20
40
60
80
122 142 162 182
DOY
Rn (
kJ
cm
-2)
Hyytiala
Hesse
Loobos
Tharandt
DWD model
Albedo?!
Evapotransration: CarboEurope Sites / DWD model
-20
0
20
40
60
80
122 142 162 182
DOYE
(k
J c
m-2
)
Hyytiala
Hesse
Loobos
Tharandt
DWD model-20
0
20
40
60
80
122 142 162 182
DOY
E (
kJ
cm
-2)
Hyytiala
Hesse
Loobos
Tharandt
CarboEurope
Albedo, rs, zo, soil, … ?
P-E: CarboEurope Sites / DWD model
-200
-150
-100
-50
0
50
100
150
200
122 142 162 182
DOY
(P-E
) (m
m)
Hyytiala
Hesse
Loobos
Tharandt CarboEurope Data
-200
-150
-100
-50
0
50
100
150
200
122 142 162 182
DOYP
- E
) (m
m)
Hyytiala
Hesse
Loobos
Tharandt
DWD model
Soil Moisture Increments and P-E (Normalized)
-0.10
-0.05
0.00
0.05
0.10
122 132 142 152 162 172 182
DOY
So
il M
ois
ture
In
cre
me
nt
Upper Layer (10 cm)
Lower Layer (90 cm)
-0.20-0.15-0.10-0.050.000.050.100.150.20
122 132 142 152 162 172 182
DOY
Ne
t P
rec
ipit
ati
on DWD Model
Hyttiala Data
Soil Moisture Increments and Evaporative Fraction
0.00
0.20
0.40
0.60
0.80
1.00
122 132 142 152 162 172 182
DOY
Ev
ap
ora
tiv
e F
rac
tio
n DWD model
Hyytiala Data
-40
-20
0
20
40
122 132 142 152 162 172 182
DOY
So
il M
ois
ture
In
cre
me
nt
(2)
-8
-4
0
4
8S
oil M
ois
ture
In
cre
me
nt (1
)Lower Layer (90 cm)
Upper Layer (10 cm)
Further Actions (1): CarboEurope Sites
Complete data collection Databases 1 ELDAS year Comparison: timeseries, trends, quality
indicators Normalized fluxes (and gridbox adjustment?) Moisture indicators (,) Temperature / humidity Soil moisture increments
Flux Sites 2: Scintillometer Sites (WAU)
• Sensible heat flux
• Heterogeneous area, average over 1-5 km
• Latent heat flux: indirect (from surface energy balance)
Scinty’s Flux Sites: H and G (noon)
050
100150200250300350
122 132 142 152 162 172 182
DOY
H (W
m-2
)
DWD model
Scinty's data
-100
0
100
200
300
400
122 132 142 152 162 172 182
DOY
G (W
m-2
)
DWD model
Data in Scinty's path
Large Scale Irrigation!
Scinty’s Flux Sites: Soil Moisture Increment (noon)
0
0.2
0.4
0.6
0.8
1
122 132 142 152 162 172 182
DOY
DWD model
Data in Scinty's path
0
25
50
75
100
125
122 132 142 152 162 172 182
DOY
Cu
mu
lati
ve
So
il
Mo
istu
re In
cre
me
nt
(mm
)
Cu
mu
lati
eve
Soil
Mois
ture
In
cre
men
t(m
m)
Further Actions (2): Scinty Sites
Re-format data Explore alternatives to compute E Comparison: timeseries, trends, quality
indicators Normalized fluxes (and gridbox adjustment?) Moisture indicators (,) Temperature / humidity Irrigation data Soil moisture increments
Soil Moisture Sites: PLAP (Geus), Flevopolder (ESA)
• Agricultural Area
• Soil moisture measurements
• Many details in space and/or time, but hardly any additional data
Soil moisture (-5cm): Flevopolder / DWD model (1)
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
122 132 142 152 162 172 182DOY
So
il M
ois
ture
Co
nte
nt
(mm
)
-10.0
0.0
10.0
20.0
30.0
40.0
So
il Mo
istu
re In
cre
me
nt
Data, averageDWD modelIncrement
Soil moisture (-5cm): Flevopolder / DWD model (2)
0.5
0.6
0.7
0.8
0.9
1.0
122 132 142 152 162 172 182DOY
No
rma
lize
d S
oil
Mo
istu
re
Co
nte
nt
-0.1
0.0
0.1
0.2
0.3
0.4
No
rma
lized
So
il Mo
istu
re
Inc
rem
en
tData, averageDWD modelIncrement
Soil moisture (-5cm): Flevopolder / DWD model (3)
0.70
0.75
0.80
0.85
0.90
0.95
1.00
145 147 149 151 153 155DOY
No
rma
lize
d S
oil
Mo
istu
re
Co
nte
nt
-0.1
0.0
0.1
0.2
0.3
0.4
No
rma
lized
So
il Mo
istu
re
Inc
rem
en
tData, averageDWD modelIncrement
Further Actions (3): Soil Moisture Sites
Re-format data Include BALTEX data Comparison: timeseries, trends, quality
indicators Normalized soil moisture (and gridbox adjustment?) Effect of soil type Soil moisture in well-defined layers Soil moisture increments Effect of drainage? Estimate P-E?
Radiation schemes comparison
Radiation schemes comparison
Radiation schemes comparison
Correlation diagram between radiation models
A simple correlation diagram between ELDORADO and SAFFRAN for 10 July 2003 6:00 GMT
Correlation and slope ELDORADO/SAFFRAN
0.0
0.2
0.4
0.6
0.8
1.0
28/08/1999 06/12/1999 15/03/2000 23/06/2000 01/10/2000 09/01/2001
Date
Co
rre
lati
on
0.0
0.2
0.4
0.6
0.8
1.0
1.2
28/08/1999 06/12/1999 15/03/2000 23/06/2000 01/10/2000 09/01/2001
Date
Slo
pe
E
LD
OR
AD
O/S
AF
FR
AN
(l
ine
ar
reg
res
sio
n)
Validation ELDORADO (Carpentras)
longwave shortwave
y = 1.1464x
r 2 = 0.9263
0
200
400
600
800
1000
1200
0 200 400 600 800 1000 1200W m-2
W m
-2
y = 1.0349x
r 2 = 0.7316
100
200
300
400
500
100 200 300 400 500W m-2
W m
-2
•x axis: model, y-axis: observations
Validation SAFFRAN (Carpentras)
longwave shortwave
y = 1.0869x
r 2 = 0.9145
0
200
400
600
800
1000
1200
0 200 400 600 800 1000 1200W m-2
W m
-2
y = 1.0761x
r 2 = 0.6398
100
200
300
400
500
100 200 300 400 500W m-2
W m
-2
•x axis: model, y-axis: observations
Further Actions (4): Radiation Schemes
Include Hesse (Sarrebourgh CarboEurope site; shortewave only)
Further analyses radiation fields Think about conclusions
To be solved: defining “reality”
Model surface versus observation space(Gridpoint Adjustment?) Land cover and characteristics Soil Type Irrigation, drainage
Trivial Matters(Define your data!) Synchronisation Height/Depth/Layers
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