CIRAS-3 Operation Manual V. 1.09 129 support@ppsystems.com
calculated – non-photochemical quenching due to aggregate constitutive non-regulatory
processes, lake antenna model, requires F
o
Ꞌ (Kramer calculation)
calculated – non-photochemical quenching due to down-regulatory (pH, xanthophyll)
processes, lake antenna model, requires F
o
Ꞌ (Kramer calculation)
calculated – non-photochemical quenching due to aggregate constitutive non-regulatory
processes, equally applicable to puddle and antenna models (Genty calculation)
calculated – non-photochemical quenching due to down-regulatory (pH, xanthophyll)
processes, equally applicable to puddle and antenna models (Genty calculation)
Calculations Used for Chlorophyll Fluorescence Parameters
v
v
v
m
F
v
/F
m
=
PSII
ϕ
PSII
=
o
F
o
v
v
v
m
F
v
ꞌ/F
m
ꞌ =
J =
(
)
Note: α=average fraction of irradiance, I (as PAR), absorbed by leaf, default value of
α=0.84; f
II
=fraction of α absorbed by PSII, default value of f
II
=0.5
p
q
p
=
NP
q
NP
=
NPQ =
L
q
L
=
=
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