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2.2.2. SUEWS_BiogenCO2.txt

Caution

The BiogenCO2 part is under development and not ready for use.

SUEWS_BiogenCO2.txt provides the parameters needed to model the Biogenic CO2 characteristics of vegetation surfaces.

No.

Column Name

Use

Description

1

Code

L

Code linking to a corresponding look-up table.

2

alpha

MU O

The mean apparent ecosystem quantum. Represents the initial slope of the light-response curve.

3

beta

MU O

The light-saturated gross photosynthesis of the canopy. [umol m-2 s-1 ]

4

theta

MU O

The convexity of the curve at light saturation.

5

alpha_enh

MU O

Part of the alpha coefficient related to the fraction of vegetation.

6

beta_enh

MU O

Part of the beta coefficient related to the fraction of vegetation.

7

resp_a

MU O

Respiration coefficient a.

8

resp_b

MU O

Respiration coefficient b - related to air temperature dependency.

9

min_respi

MU O

Minimum soil respiration rate (for cold-temperature limit) [umol m-2 s-1].

An example SUEWS_BiogenCO2.txt can be found below:

1     2       3       4       5           6          7        8        9
Code  alpha   beta    theta   alpha_enh   beta_enh   resp_a   resp_b   min_respi
11    0.044   43.35   -999     -999        -999       1.08     0.064   0.6 ! London/Swindon , plant canopies, Ruimy et al. (1995)
12    0.0593  35      -999     -999        -999       1.08     0.064   0.6 ! Hardwood forest, Schmid et al. (2000)
13    0.0205  16.3    -999     -999        -999       1.08     0.064   0.6 ! Temperate grassland, Flanagan et al. (2002)
21    0.031   17.793  0.723    -999        -999       3.229    0.0329  0.6 ! Helsinki
31    0.005   8.747   0.96     0.016       33.454     2.43     0       0.6 ! Helsinki
32    0.004   8.747   0.96     0.016       33.353     2.43     0       0.6 ! Helsinki test
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