BigFoot - ORNL DAAC for Biogeochemical Dynamics€¦ · BigFoot F. Year: 2000 Site: CHEQ (Wisconsin, USA) Biome: Mixed Forest BigFoot LAI Comparison BigFoot vs. MODIS BigFoot LAI

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