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<strong>MEGAN</strong> Framework:<br />
Canopy Factor calculations<br />
For isoprene:<br />
Follow equation 14 of<br />
Guenther et al. (2006):<br />
Where<br />
γ<br />
x<br />
T<br />
=<br />
E<br />
( C<br />
T 2<br />
∗CT<br />
2<br />
∗exp(<br />
CT1<br />
∗ x)<br />
− C *(1 − exp( C ∗ x)<br />
OPT<br />
T1<br />
[( 1/ T opt<br />
) − (1/ Thr<br />
)<br />
=<br />
0.00831<br />
E OPT<br />
1.75 * (exp(0.08 * ( T − 297)<br />
=<br />
daily<br />
T opt<br />
313 + (0.6 * ( T − 297))<br />
=<br />
daily<br />
T 2<br />
T hr<br />
= hourly air temperature (K)<br />
T daily<br />
= daily average air temperature (K) representative of<br />
model simulation period<br />
C T1<br />
= 80<br />
C T2<br />
= 200<br />
For Monoterpenes:<br />
From Guenther et al., 1995<br />
γ<br />
= exp β •<br />
[ ( T − )]<br />
T<br />
T s
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