Calibration of IBIS against data from four primary forest sites in

Amazonia

Marcos Heil Costa, Hewlley M. A. Imbuzeiro,

Gleidson C. B. Baleeiro, Humberto R. da Rocha,

Antonio Manzi, Scott Saleska, Steve Wofsy,

Lucy Hutira, Michael Goulden, Scott Miller

1. Introduction

• Land surface/ecosystem models, like IBIS,

simulate the fluxes of energy, water and CO2

between the surface and the atmosphere

• Traditionally in the field, these models are

usually calibrated against data collected in one

single site per ecosystem

• Given the availability of LBA data for Amazonia, in this study, we calibrate IBIS against data from four primary rainforest sites in Amazonia?

– Flona Tapajós km 67

– Flona Tapajós km 83

– Reserva do Cuieiras km 34

– Rebio Jaru

• The process of calibration aims at minimizing the RMSE for latent and sensible heat fluxes, as well as carbon fluxes

• Model input variables– Sin (solar incoming radiation)– Lin (infrared incoming radiation)– Ta (air temperature)– ha (air relative humidity)– ua (wind speed)– P (precipitation)

• Model validation– Rn (net radiation)– H (sensible heat flux)– LE (latent heat flux)– NEE (net ecosystem exchange)

Data filtering

• Input data

• Turbulence threshold (u*0 = 0.1 m/s)

• Energy balance closure ( = 0.4), on a daily basis

11

GRn

LEH

Parameters calibrated

• Fine root distribution (2)

• Maximum capacity of Rubisco enzyme (Vmax)

• Angular coefficient related to stomatal conductance (m)

• Heat capacity of stems (CHS)

2. Initial results

Flona Tapajós km 83

Flona Tapajós km 83 - Rn

Tapajós km83 Rn (W m-2) - AGO

-100

100

300

500

700

900

2/8/2000 4/8/2000 6/8/2000 8/8/2000 10/8/2000 12/8/2000

Rn sim

Rn obs

(a) Tapajós km83 Rn (W m-2) - NOV

-100

100

300

500

700

900

22/11/2000 24/11/2000 26/11/2000 28/11/2000 30/11/2000 2/12/2000

Rn sim

Rn obs

(b)

Tapajós km83 Rn (W m-2) - MAR

-100

100

300

500

700

900

14/3/2001 16/3/2001 18/3/2001 20/3/2001 22/3/2001 24/3/2001

Rn sim

Rn obs

(c)Tapajós km83 Rn (W m-2) - MAI

-100

100

300

500

700

900

18/5/2001 20/5/2001 22/5/2001 24/5/2001 26/5/2001 28/5/2001

Rn sim

Rn obs

(d)

Flona Tapajós km 83 - H

Tapajós km83 H (W m-2) - AGO

-100

0

100

200

300

400

2/8/2000 4/8/2000 6/8/2000 8/8/2000 10/8/2000 12/8/2000

H sim

H obs

(a) Tapajós km83 H (W m-2) - NOV

-100

0

100

200

300

400

22/11/2000 24/11/2000 26/11/2000 28/11/2000 30/11/2000 2/12/2000

H sim

H obs

(b)

Tapajós km83 H (W m-2) - MAR

-100

0

100

200

300

400

14/3/2001 16/3/2001 18/3/2001 20/3/2001 22/3/2001 24/3/2001

H sim

H obs

(c) Tapajós km83 H (W m-2) - MAI

-100

0

100

200

300

400

18/5/2001 20/5/2001 22/5/2001 24/5/2001 26/5/2001 28/5/2001

H sim

H obs

(d)

Flona Tapajós km 83 - LETapajós km83 LE (W m-2) - AGO

-200

0

200

400

600

800

2/8/2000 4/8/2000 6/8/2000 8/8/2000 10/8/2000 12/8/2000

LE sim

LE obs

(a) Tapajós km83 LE (W m-2) - NOV

-200

0

200

400

600

800

22/11/2000 24/11/2000 26/11/2000 28/11/2000 30/11/2000 2/12/2000

LE sim

LE obs

(b)

Tapajós km83 LE (W m-2) - MAR

-200

0

200

400

600

800

14/3/2001 16/3/2001 18/3/2001 20/3/2001 22/3/2001 24/3/2001

LE sim

LE obs

(c) Tapajós km83 LE (W m-2) - MAI

-200

0

200

400

600

800

18/5/2001 20/5/2001 22/5/2001 24/5/2001 26/5/2001 28/5/2001

LE sim

LE obs

(d)

Flona Tapajós km 83 - NEETapajós km83 NEE (kg C ha-1 hr-1) - AGO

-20

-10

0

10

20

2/8/2000 4/8/2000 6/8/2000 8/8/2000 10/8/2000 12/8/2000

NEE sim

NEE obs

(a)

2

Tapajós km83 NEE (kg C ha-1 hr-1) - NOV

-20

-10

0

10

20

22/11/2000 24/11/2000 26/11/2000 28/11/2000 30/11/2000 2/12/2000

NEE sim

NEE obs

(b)

Tapajós km83 NEE (kg C ha-1 hr-1) - MAR

-20

-10

0

10

20

14/3/2001 16/3/2001 18/3/2001 20/3/2001 22/3/2001 24/3/2001

NEE sim

NEE obs

(c) Tapajós km83 NEE (kg C ha-1 hr-1) - MAI

-20

-10

0

10

20

18/5/2001 20/5/2001 22/5/2001 24/5/2001 26/5/2001 28/5/2001

NEE sim

NEE obs

(d)

Flona Tapajós km 83 Cumulative fluxes

Tapajós km83 Cumulativo Rn (MJ m -2)

0

500

1000

1500

2000

2500

3000

3500

1/7/00 19/9/00 8/12/00 26/2/01 17/5/01 5/8/01

Rn ac. Obs

Rn ac. sim

(a) Tapajós km83 Cumulativo H (MJ m -2)

0

100

200

300

400

1/7/ 00 19/9/00 8/12/00 26/2/01 17/5/01 5/8/ 01

H ac. Obs

H ac. Sim

(b)

Tapajós km83 Cumulativo LE (MJ m -2)

0

400

800

1200

1600

2000

1/7/ 00 19/9/00 8/12/00 26/2/01 17/5/01 5/8/ 01

LE ac. Obs

LE ac. Sim

(c) Tapajós km83 Cumulativo NEE (kg C ha-1)

- 6000

- 5000

- 4000

- 3000

- 2000

- 1000

0

1/7/2000 19/9/2000 8/12/2000 26/2/2001 17/5/2001 5/8/2001

NEE ac. ObsNEE ac. S im

(d)

Initial results

Flona Tapajós km 67

Flona Tapajós km 67 - RnTapajós km67 Rn (W m-2) - ABR

-100

100

300

500

700

900

12/4/2001 14/4/2001 16/4/2001 18/4/2001 20/4/2001 22/4/2001

Rn sim

Rn obs

(a) Tapajós km67 Rn (W m-2) - J UL

-100

100

300

500

700

900

1/7/2001 3/7/2001 5/7/2001 7/7/2001 9/7/2001 11/7/2001

Rn sim

Rn obs

(b)

Tapajós km67 Rn (W m-2) - FEV

-100

100

300

500

700

900

9/2/2002 11/2/2002 13/2/2002 15/2/2002 17/2/2002 19/2/2002

Rn sim

Rn obs

(c)Tapajós km67 Rn (W m-2) - J UL

-100

100

300

500

700

900

1/7/2002 3/7/2002 5/7/2002 7/7/2002 9/7/2002 11/7/2002

Rn sim

Rn obs

(d)

Flona Tapajós km 67 - H

H (W m-2) - ABR

-100

0

100

200

300

400

12/4/2001 14/4/2001 16/4/2001 18/4/2001 20/4/2001 22/4/2001

H sim

H obs

(a) H (W m-2) - J UL

-100

0

100

200

300

400

1/7/2001 3/7/2001 5/7/2001 7/7/2001 9/7/2001 11/7/2001

H sim

H obs

(b)

H (W m-2) - FEV

-100

0

100

200

300

400

9/2/2002 11/2/2002 13/2/2002 15/2/2002 17/2/2002 19/2/2002

H sim

H obs

(c) H (W m-2) - J UL

-100

0

100

200

300

400

1/7/2002 3/7/2002 5/7/2002 7/7/2002 9/7/2002 11/7/2002

H sim

H obs

(d)

Flona Tapajós km 67 - LELE (W m-2) - ABR

-200

0

200

400

600

800

12/4/2001 14/4/2001 16/4/2001 18/4/2001 20/4/2001 22/4/2001

LE sim

LE obs

(a) LE (W m-2) - J UL

-200

0

200

400

600

800

1/7/2001 3/7/2001 5/7/2001 7/7/2001 9/7/2001 11/7/2001

LE sim

LE obs

(b)

LE (W m-2) - FEV

-200

0

200

400

600

800

9/2/2002 11/2/2002 13/2/2002 15/2/2002 17/2/2002 19/2/2002

LE sim

LE obs

(c) LE (W m-2) - J UL

-200

0

200

400

600

800

1/7/2002 3/7/2002 5/7/2002 7/7/2002 9/7/2002 11/7/2002

LE sim

LE obs

(d)

Flona Tapajós km 67 - NEE

NEE (kg C ha-1 hr-1) - ABR

-20

-10

0

10

20

12/4/2001 14/4/2001 16/4/2001 18/4/2001 20/4/2001 22/4/2001

NEE sim

NEE obsNEE (kg C ha-1 hr-1) - J UL

-20

-10

0

10

20

1/7/2001 3/7/2001 5/7/2001 7/7/2001 9/7/2001 11/7/2001

NEE sim

NEE obs

(b)

NEE (kg C ha-1 hr-1) - FEV

-20

-10

0

10

20

9/2/2002 11/2/2002 13/2/2002 15/2/2002 17/2/2002 19/2/2002

NEE sim

NEE obs

(c) NEE (kg C ha-1 hr-1) - J UL

-20

-10

0

10

20

1/7/2002 3/7/2002 5/7/2002 7/7/2002 9/7/2002 11/7/2002

NEE sim

NEE obs

(d)

Flona Tapajós km 67Cumulative fluxes

Tapajós km67 Cumulativo Rn (MJ m-2)

0

1000

2000

3000

4000

5000

12/4/01 21/7/01 29/10/01 6/2/02 17/5/02

Rn ac. Obs

Rn ac. sim

(a) Tapajós km67 Cumulativo H (MJ m-2)

0

400

800

1200

1600

2000

12/4/01 21/7/01 29/10/01 6/2/02 17/5/02

H ac. Obs

H ac. Sim

(b)

Tapajós km67 Cumulativo LE (MJ m-2)

0

500

1000

1500

2000

2500

3000

12/4/01 21/7/01 29/10/01 6/2/02 17/5/02

LE ac. Obs

LE ac. Sim

(c) Tapajós km67Cumulativo NEE (kg C ha-1)

- 7000

- 6000

- 5000

- 4000

- 3000

- 2000

- 1000

0

12/4/2001 21/7/2001 29/10/2001 6/2/2002 17/5/2002

NEE ac. Obs

NEE ac. Sim

(d)

Initial results

Reserva do Cuieiras km 34

Reserva do Cuieiras km 34 - RnCuieiras km34 Rn (W m-2) - SET

-100

100

300

500

700

900

26/9/1999 28/9/1999 30/9/1999 2/10/1999 4/10/1999 6/10/1999

Rn sim

Rn obs

(a) Cuieiras km34 Rn (W m-2) - DEZ

-100

100

300

500

700

900

3/12/1999 5/12/1999 7/12/1999 9/12/1999 11/12/1999 13/12/1999

Rn sim

Rn obs

(b)

Cuieiras km34 Rn (W m-2) - J UN

-100

100

300

500

700

900

2/6/2000 4/6/2000 6/6/2000 8/6/2000 10/6/2000 12/6/2000

Rn sim

Rn obs

(c)Cuieiras km34 Rn (W m-2) - J UL

-100

100

300

500

700

900

22/7/2000 24/7/2000 26/7/2000 28/7/2000 30/7/2000 1/8/2000

Rn sim

Rn obs

(d)

Reserva do Cuieiras km 34 - HCuieiras km34 H (W m-2) - SET

-100

0

100

200

300

400

26/9/1999 28/9/1999 30/9/1999 2/10/1999 4/10/1999 6/10/1999

H sim

H obs

(a) Cuieiras km34 H (W m-2) - DEZ

-100

0

100

200

300

400

3/12/1999 5/12/1999 7/12/1999 9/12/1999 11/12/1999 13/12/1999

H sim

H obs

(b)

Cuieiras km34 H (W m-2) - J UN

-100

0

100

200

300

400

2/6/2000 4/6/2000 6/6/2000 8/6/2000 10/6/2000 12/6/2000

H sim

H obs

(c) Cuieiras km34 H (W m-2) - J UL

-100

0

100

200

300

400

22/7/2000 24/7/2000 26/7/2000 28/7/2000 30/7/2000 1/8/2000

H sim

H obs

(d)

Reserva do Cuieiras km 34 - LECuieiras km34 LE (W m-2) - SET

-200

0

200

400

600

800

26/9/1999 28/9/1999 30/9/1999 2/10/1999 4/10/1999 6/10/1999

LE sim

LE obs

(a) Cuieiras km34 LE (W m-2) - DEZ

-200

0

200

400

600

800

3/12/1999 5/12/1999 7/12/1999 9/12/1999 11/12/1999 13/12/1999

LE sim

LE obs

(b)

Cuieiras km34 LE (W m-2) - J UN

-200

0

200

400

600

800

2/6/2000 4/6/2000 6/6/2000 8/6/2000 10/6/2000 12/6/2000

LE sim

LE obs

(c) Cuieiras km34 LE (W m-2) - J UL

-200

0

200

400

600

800

22/7/2000 24/7/2000 26/7/2000 28/7/2000 30/7/2000 1/8/2000

LE sim

LE obs

(d)

Reserva do Cuieiras km 34 - NEE

Cuieiras km34 NEE (kg C ha-1 hr-1) - SET

-20

-10

0

10

20

26/9/99 28/9/99 30/9/99 2/10/99 4/10/99 6/10/99

NEE sim

NEE obs

(a) Cuieiras km34 NEE (kg C ha-1 hr-1) - DEZ

-20

-10

0

10

20

3/12/99 5/12/99 7/12/99 9/12/99 11/12/99 13/12/99

NEE sim

NEE obs

(b)

Cuieiras km34 NEE (kg C ha-1 hr-1) - J UN

-20

-10

0

10

20

2/6/00 4/6/00 6/6/00 8/6/00 10/6/00 12/6/00

NEE sim

NEE obs

(c)

Cuieiras km34 NEE (kg C ha-1 hr-1) - J UL

-20

-10

0

10

20

22/7/00 24/7/00 26/7/00 28/7/00 30/7/00 1/8/00

NEE sim

NEE obs

(d)

Reserva do Cuieiras km 34 Cumulative fluxes

Cuieiras km34 Cumulativo Rn (MJ m -2)

0

1000

2000

3000

4000

5000

6000

16/6/99 16/9/99 16/12/99 16/3/00 16/6/00 16/9/00

Rn ac. Obs

Rn ac. Sim

(a) Cuieiras km34 Cumulativo H (MJ m -2)

0

200

400

600

800

16/6/99 16/9/99 16/12/99 16/3/00 16/6/00 16/9/00

H ac. Obs

H ac. Sim

(b)

Cuieiras km34 Cumulativo LE (MJ m -2)

0

500

1000

1500

2000

2500

3000

16/6/99 16/9/99 16/12/99 16/3/00 16/6/00 16/9/00

LE ac. Obs

LE ac. Sim

(c) Cuieiras km34 Cumulativo NEE (kg C ha-1)

-6000

-5000

-4000

-3000

-2000

-1000

0

16/6/99 16/9/99 16/12/99 16/3/00 16/6/00 16/9/00

NEE ac. Obs

NEE ac. Sim

(d)

Initial results

Rebio Jaru

Rebio Jaru - Rn

Rebio J aru Rn (W m-2) - ABR

-100

100

300

500

700

900

25/4/1999 27/4/1999 29/4/1999 1/5/1999 3/5/1999

Rn sim

Rn obs

(a) Rebio J aru Rn (W m-2) - J UN

-100

100

300

500

700

900

7/6/1999 9/6/1999 11/6/1999 13/6/1999 15/6/1999

Rn sim

Rn obs

(b)

Rebio J aru Rn (W m-2) - OUT

-100

100

300

500

700

900

3/10/1999 5/10/1999 7/10/1999 9/10/1999 11/10/1999 13/10/1999

Rn sim

Rn obs

(c)Rebio J aru Rn (W m-2) - NOV

-100

100

300

500

700

900

7/11/1999 9/11/1999 11/11/1999 13/11/1999 15/11/1999 17/11/1999

Rn sim

Rn obs

(d)

Rebio Jaru - H

Rebio J aru H (W m-2) - ABR

-100

0

100

200

300

400

25/4/99 27/4/99 29/4/99 1/5/99 3/5/99

H sim

H obs

(a) Rebio J aru H (W m-2) - J UN

-100

0

100

200

300

400

7/6/99 9/6/99 11/6/99 13/6/99 15/6/99

H sim

H obs

(b)

Rebio J aru H (W m-2) - OUT

-200

-100

0

100

200

300

400

3/10/99 5/10/99 7/10/99 9/10/99 11/10/99 13/10/99

H sim

H obs

(c) Rebio J aru H (W m-2) - NOV

-100

0

100

200

300

400

7/11/99 9/11/99 11/11/99 13/11/99 15/11/99 17/11/99

H sim

H obs

(d)

Rebio Jaru - LE

Rebio J aru LE (W m-2) - ABR

-200

0

200

400

600

800

25/4/99 27/4/99 29/4/99 1/5/99 3/5/99

LE sim

LE obs

(a)

Rebio J aru LE (W m-2) - J UN

-200

0

200

400

600

800

7/6/99 9/6/99 11/6/99 13/6/99 15/6/99

LE sim

LE obs

(b)

Rebio J aru LE (W m-2) - OUT

-200

0

200

400

600

800

3/10/99 5/10/99 7/10/99 9/10/99 11/10/99 13/10/99

LE sim

LE obs

(c) Rebio J aru LE (W m-2) - NOV

-200

0

200

400

600

800

7/11/99 9/11/99 11/11/99 13/11/99 15/11/99 17/11/99

LE sim

LE obs

(d)

Rebio Jaru - NEE

Rebio J aru NEE/ FC (kg C ha-1 hr-1) - ABR

-20

-10

0

10

20

25/4/99 27/4/99 29/4/99 1/5/99 3/5/99

NEE sim

FC obs

(a) Rebio J aru NEE/ FC (kg C ha-1 hr-1) - J UN

-20

-10

0

10

20

7/6/99 9/6/99 11/6/99 13/6/99 15/6/99

NEE sim

FC obs

(b)

Rebio J aru NEE/ FC (kg C ha-1 hr-1) - OUT

-20

-10

0

10

20

3/10/99 5/10/99 7/10/99 9/10/99 11/10/99 13/10/99

NEE sim

FC obs

(c) Rebio J aru NEE/ FC (kg C ha-1 hr-1) - NOV

-20

-10

0

10

20

7/11/99 9/11/99 11/11/99 13/11/99 15/11/99 17/11/99

NEE sim

FC obs

(d)

Rebio Jaru Cumulative fluxes

Rebio Jaru Cumulativo Rn (MJ m-2)

0

500

1000

1500

2000

2500

3000

3500

30/3/99 14/5/99 28/6/99 12/8/99 26/9/99 10/11/99

Rn ac. Obs

Rn ac. sim

(a) Rebio Jaru Cumulativo H (MJ m-2)

0

30

60

90

120

150

180

30/3/99 14/5/99 28/6/99 12/8/99 26/9/99 10/11/99

H ac. Obs

H ac. Sim

(b)

Rebio Jaru Cumulativo LE (MJ m-2)

0

100

200

300

400

500

30/3/99 14/5/99 28/6/99 12/8/99 26/9/99 10/11/99

LE ac. Obs

LE ac. Sim

(c) Rebio Jaru Cumulativo NEE/ FC (kg C ha-1)

- 3000

- 2500

- 2000

- 1500

- 1000

- 500

0

30/3/99 9/5/99 18/6/99 28/7/99 6/9/99 16/10/99 25/11/99

FC ac. Obs

NEE ac. Sim

(d)

Initial results – summary

β2 Vmax

( mol m 2 s

1)

m CHS

(J m 2 °C-

1)

km 83 0.997 120 11 0.325· 105

km 67 0.980 65 9 2.109· 105

km 34 0.985 70 9 0.263· 105

Rebio Jaru

0.997 120 10 0.527· 105

3. New results

• Flona Tapajós km 83 and km 67 only

• Same period for km 83, but with revised meteorological station and flux data

• Errors reported in water vapor at the initial time series initially used

• Used different period for km 67

Flona Tapajós km 83

15

25

35

45

55

65

30/06/00 02/07/00 04/07/00 06/07/00 08/07/00 10/07/00

T (

o C)

0

20

40

60

80

100

RH

(%

)

T new T old RH new RH old

3. New results (still preliminary)

Flona Tapajós km 83

Flona Tapajós km 83 - Rn

Tapajós km83 Rn (W m-2) - AGO

-100

100

300

500

700

900

8/02/00 8/04/00 8/06/00 8/08/00 8/10/00 8/12/00

Rn sim

Rn obs

(a) Tapajós km83 Rn (W m-2) - NOV

-100

100

300

500

700

900

11/22/00 11/24/00 11/26/00 11/28/00 11/30/00 12/02/00

Rn sim

Rn obs

(b)

Tapajós km83 Rn (W m-2) - MAR

-100

100

300

500

700

900

3/14/01 3/16/01 3/18/01 3/20/01 3/22/01 3/24/01

Rn sim

Rn obs

(c) Tapajós km83 Rn (W m-2) - MAI

-100

100

300

500

700

900

5/18/01 5/20/01 5/22/01 5/24/01 5/26/01 5/28/01

Rn sim

Rn obs

(d)

Flona Tapajós km 83 - H

Tapajós km83 H (W m-2) - AGO

-200

-100

0

100

200

300

400

8/02/00 8/04/00 8/06/00 8/08/00 8/10/00 8/12/00

H sim

H obs

(a) Tapajós km83 H (W m-2) - NOV

-100

0

100

200

300

400

11/22/00 11/24/00 11/26/00 11/28/00 11/30/00 12/02/00

H sim

H obs

(b)

Tapajós km83 H (W m-2) - MAR

-100

0

100

200

300

400

3/14/01 3/16/01 3/18/01 3/20/01 3/22/01 3/24/01

H sim

H obs

(c) Tapajós km83 H (W m-2) - MAI

-100

0

100

200

300

400

5/18/01 5/20/01 5/22/01 5/24/01 5/26/01 5/28/01

H sim

H obs

(d)

Flona Tapajós km 83 - LE

Tapajós km83 LE (W m-2) - AGO

-200

0

200

400

600

800

8/02/00 8/04/00 8/06/00 8/08/00 8/10/00 8/12/00

LE sim

LE obs

(a) Tapajós km83 LE (W m-2) - NOV

-200

0

200

400

600

800

11/22/00 11/24/00 11/26/00 11/28/00 11/30/00 12/02/00

LE sim

LE obs

(b)

Tapajós km83 LE (W m-2) - MAR

-200

0

200

400

600

800

3/14/01 3/16/01 3/18/01 3/20/01 3/22/01 3/24/01

LE sim

LE obs

(c) Tapajós km83 LE (W m-2) - MAI

-200

0

200

400

600

800

5/18/01 5/20/01 5/22/01 5/24/01 5/26/01 5/28/01

LE sim

LE obs

(d)

Flona Tapajós km 83 - NEE

Tapajós km83 NEE (kg C ha-1 hr-1) - AGO

-20

-10

0

10

20

8/02/00 8/04/00 8/06/00 8/08/00 8/10/00 8/12/00

NEE sim

NEE obs

(a)

2

Tapajós km83 NEE (kg C ha-1 hr-1) - NOV

-20

-10

0

10

20

11/22/00 11/24/00 11/26/00 11/28/00 11/30/00 12/02/00

NEE sim

NEE obs

(b)

Tapajós km83 NEE (kg C ha-1 hr-1) - MAR

-20

-10

0

10

20

3/14/01 3/16/01 3/18/01 3/20/01 3/22/01 3/24/01

NEE sim

NEE obs

(c) Tapajós km83 NEE (kg C ha-1 hr-1) - MAI

-20

-10

0

10

20

5/18/01 5/20/01 5/22/01 5/24/01 5/26/01 5/28/01

NEE sim

NEE obs

(d)

Flona Tapajós km 83 Cumulative fluxes

Tapajós km83 Cumulative H (MJ m-2)

0

50

100

150

200

250

300

07/01/00 09/19/00 12/08/00 02/26/01 05/17/01 08/05/01

H ac. Obs

H ac. Sim

(b) Tapajós km83 Cumulative NEE (kg C ha-1)

-4000

-3000

-2000

-1000

0

1000

07/01/00 09/19/00 12/08/00 02/26/01 05/17/01 08/05/01

NEE ac. Obs

NEE ac. Sim

(d)

Tapajós km83 Cumulative LE (MJ m-2)

0

400

800

1200

1600

07/01/00 09/19/00 12/08/00 02/26/01 05/17/01 08/05/01

LE ac. Obs

LE ac. Sim

(c)Tapajós km83 Cumulative Rn (MJ m-2)

0

500

1000

1500

2000

2500

3000

3500

4000

4500

07/01/00 09/19/00 12/08/00 02/26/01 05/17/01 08/05/01

Rn ac. Obs

Rn ac. sim

(a)

New Results

Flona Tapajós km 67

Flona Tapajós km 67 - Rn

Tapajós km67 Rn (W m-2) - AUG

-100

100

300

500

700

900

08/02/02 08/04/02 08/06/02 08/08/02 08/10/02 08/12/02

Rn sim

Rn obs

(a) Tapajós km67 Rn (W m-2) - DEC

-100

100

300

500

700

900

12/14/02 12/16/02 12/18/02 12/20/02 12/22/02 12/24/02

Rn sim

Rn obs

(b)

Tapajós km67 Rn (W m-2) - MAR

-100

100

300

500

700

900

03/26/03 03/28/03 03/30/03 04/01/03 04/03/03 04/05/03

Rn sim

Rn obs

(c)Tapajós km67 Rn (W m-2) - J UL

-100

100

300

500

700

900

07/08/03 07/10/03 07/12/03 07/14/03 07/16/03 07/18/03

Rn sim

Rn obs

(d)

Flona Tapajós km 67 - H

Tapajós km67 H (W m-2) - AUG

-100

0

100

200

300

400

08/02/02 08/04/02 08/06/02 08/08/02 08/10/02 08/12/02

H sim

H obs

(a) Tapajós km67 H (W m-2) - DEC

-100

0

100

200

300

400

12/14/02 12/16/02 12/18/02 12/20/02 12/22/02 12/24/02

H sim

H obs

(b)

Tapajós km67 H (W m-2) - MAR

-100

0

100

200

300

400

03/26/03 03/28/03 03/30/03 04/01/03 04/03/03 04/05/03

H sim

H obs

(c) Tapajós km67 H (W m-2) - J UL

-100

0

100

200

300

400

07/08/03 07/10/03 07/12/03 07/14/03 07/16/03 07/18/03

H sim

H obs

(d)

Flona Tapajós km 67 - LE

Tapajós km67 LE (W m-2) - AUG

-200

0

200

400

600

800

08/02/02 08/04/02 08/06/02 08/08/02 08/10/02 08/12/02

LE sim

LE obs

(a) Tapajós km67 LE (W m-2) - DEC

-200

0

200

400

600

800

12/14/02 12/16/02 12/18/02 12/20/02 12/22/02 12/24/02

LE sim

LE obs

(b)

Tapajós km67 LE (W m-2) - MAR

-200

0

200

400

600

800

03/26/03 03/28/03 03/30/03 04/01/03 04/03/03 04/05/03

LE sim

LE obs

(c) Tapajós km67 LE (W m-2) - J UL

-200

0

200

400

600

800

07/08/03 07/10/03 07/12/03 07/14/03 07/16/03 07/18/03

LE sim

LE obs

(d)

Flona Tapajós km 67 - NEE

Tapajós km67 NEE (kg C ha-1 hr-1) - AUG

-20

-10

0

10

20

08/02/02 08/04/02 08/06/02 08/08/02 08/10/02 08/12/02

NEE sim

NEE obs

(a) Tapajós km67 NEE (kg C ha-1 hr-1) - DEC

-20

-10

0

10

20

12/14/02 12/16/02 12/18/02 12/20/02 12/22/02 12/24/02

NEE sim

NEE obs

(b)

Tapajós km67 NEE (kg C ha-1 hr-1) - MAR

-20

-10

0

10

20

03/26/03 03/28/03 03/30/03 04/01/03 04/03/03 04/05/03

NEE sim

NEE obs

(c) Tapajós km67 NEE (kg C ha-1 hr-1) - J UL

-20

-10

0

10

20

07/08/03 07/10/03 07/12/03 07/14/03 07/16/03 07/18/03

NEE sim

NEE obs

(d)

Flona Tapajós km 67Cumulative fluxes

Tapajós km67 Cumulative Rn (MJ m-2)

0

1000

2000

3000

4000

5000

6000

06/19/02 10/19/02 02/19/03 06/19/03 10/19/03

Rn ac. Obs

Rn ac. Sim

(a) Tapajós km67 Cumulative H (MJ m-2)

0

200

400

600

800

06/19/02 10/19/02 02/19/03 06/19/03 10/19/03

H ac. Obs

H ac. Sim

(b)

Tapajós km67 Cumulative LE (MJ m-2)

0

500

1000

1500

2000

2500

3000

06/19/02 10/19/02 02/19/03 06/19/03 10/19/03

LE ac. Obs

LE ac. Sim

(c)Tapajós km67 Cumulative NEE (kg C ha-1)

-9000

-8000

-7000

-6000

-5000

-4000

-3000

-2000

-1000

0

06/19/02 10/19/02 02/19/03 06/19/03 10/19/03

NEE ac. Obs

NEE ac. Sim

(d)

u*0 = 0.2 m/s

New results – summary

β2 Vmáx

( mol m 2 s

1)

m CHS

(J m 2 °C-

1)

km 83 0.997 120 11 0.325· 105

km 67 0.980 65 9 2.109· 105

km 83 0.997 120 8 0.263· 105

km 67 0.997 120 8.5 0.325· 105

km 34 0.985 70 9 0.263· 105

Rebio Jaru

0.997 120 10 0.527· 105

4. Conclusions (1/2)• Calibrated IBIS against data for 4 LBA primary

forest sites

• Expected similar parameters for all sites

• Initial results shows 2 sets of parameters

• Errors in the meteorological or flux datasets reported in 2 sites

• New results (preliminary) indicate that 3 of the 4 sites show similar parameters

• Model results very sensitive to errors in input data

4. Conclusions (2/2)• Model results across sites also sensitive to

inconsistencies in input data across sites

• Inconsistencies in input data very likely, given the different design and operation of LBA sites

• Collaboration with field scientists essential to eliminate inconsistencies among datasets

• Representative parameters to all rainforest sites may depend on elimination of inconsistencies