4.2.2. SUEWS_BiogenCO2.txt

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 the BiogenCO2Code column in SUEWS_Veg.txt.
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.
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)

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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