bigfoot - ornl daac for biogeochemical dynamics€¦ · bigfoot f. year: 2000 site: cheq...
TRANSCRIPT
Land
Cover
L
BigFootLAI Seasonal TrajectoryHardwood Forest
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
Day of Year
0 60 120 180 240 300 360
LAI
(m2 m
-2)
0
1
2
3
4
5
Hardwood
L
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootMeteorologicalInputs
M
Precipitation (cm)
0 60 120 180 240 300 360
0
1
2
3
4
5
6Minimum Temperature (oC)
0 60 120 180 240 300 360-40
-20
0
20
40Maximum Temperature (oC)
0 60 120 180 240 300 360-20
-10
0
10
20
30
40
Vapor Pressure Deficit (kPa)
Day of Year
0 60 120 180 240 300 360
0.00.20.40.60.81.01.21.41.61.8
Shortwave Radiation (MJ m-2 d-1)
Day of Year
0 60 120 180 240 300 360
0
5
10
15
20
25
30PAR (MJ m-2 d-1)
Day of Year
0 60 120 180 240 300 360
02468
10121416
N
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootGPP ComparisonBigFoot vs. Tower
Day of Year
0 60 120 180 240 300 360
GPP
(gC m
-2 d
-1)
0
2
4
6
8
10TowerBigFoot
Tower GPP (gC m-2 d-1)
0 2 4 6 8 10Big
Foot
GPP
(gC m
-2 d
-1)
0
2
4
6
8
10
RMSE = 1.34
G
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootGPP ComparisonBigFoot vs. MODIS
BigFoot GPP (gC m-2 d-1)
0 2 4 6 8 10 12M
OD
IS G
PP (
gC m
-2 d
-1)
0
2
4
6
8
10
12
RMSE = 1.55
Day of Year
0 60 120 180 240 300 360
GPP
(gC m
-2 d
-1)
-2
0
2
4
6
8
10
12MODISBigFoot
G
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootNPP ComparisonBigFoot vs. MODIS
BigFoot MODIS
NPP
(gC m
-2 y
r-1)
0
100
200
300
400
500
600
700
N
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootCarbon Flux ComparisonBigFoot vs. MODIS
BigFoot MODIS
Car
bon F
lux
(gC m
-2 y
r-1)
0
200
400
600
800
1000
1200
1400
Net Primary ProductionAutotrophic Respiration
N
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootMeteorological ComparisonTower vs. DAO*
PAR (MJ m-2 d-1)
Tower
0 2 4 6 8 10 12 14 16
DAO
0
2
4
6
8
10
12
14
16
Minimum Temperature (oC)
Tower
-20 -10 0 10 20-20
-10
0
10
20
Vapor Pressure Deficit (kPa)
Tower
0.0 0.5 1.0 1.5 2.0 2.50.0
0.5
1.0
1.5
2.0
2.5
* DAO – Data Assimilation Office
M
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootFPAR ComparisonBigFoot vs. MODIS
BigFoot FPAR (fraction)
0.0 0.2 0.4 0.6 0.8 1.0M
OD
IS F
PAR (
frac
tion)
0.0
0.2
0.4
0.6
0.8
1.0
Day of Year
0 60 120 180 240 300 360
FPAR (
fract
ion)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
MODISBigFoot
F
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootLAI ComparisonBigFoot vs. MODIS
BigFoot LAI (m-2 m-2)
0 2 4 6M
OD
IS L
AI
(m-2
m-2
)
0
2
4
6
Day of Year
0 60 120 180 240 300 360
LAI
(m-2
m-2
)
0
2
4
6
8
10
12MODISBigFoot
L
Year: 2000Site: CHEQ (Wisconsin, USA)Biome: Mixed Forest
BigFootLUE ComparisonBigFoot vs. MODIS
Day of Year
0 60 120 180 240 300 360
Light
Use
Effic
iency
(gC M
J-1)
0
1
2
3
BigFootMODIS
L