1.0 fraction of mass identified 0 - acp - recent1.0 0.8 0.6 0.4 0.2 0.0 fraction of mass identified...

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1.0 0.8 0.6 0.4 0.2 0.0 Fraction of mass identified 1.0 0.8 0.6 0.4 0.2 0.0 Cumulative fraction identified 120 80 40 0 Number of VOC species identified 1.0 0.8 0.6 0.4 0.2 0.0 200 150 100 50 0 Ion m z (Th) Canopy Canopy Litter Log Log Canopy Canopy Canopy Canopy Duff Canopy Canopy Litter Log Canopy Canopy Litter duff Litter Litter Clean Clean Dirty Dirty Clean Clean Clean Dirty Dirty Dirty Canopy Canopy Excelsior Excelsior Dung Peat Rice straw Bear grass Jeffrey pine bark Building material Ponderosa pine Lodgepole pine Engelmann spruce Douglas fir Subalpine fir Loblolly pine Manzanita Chamise Sage Juniper Ceanothus Other a b Cumulative fraction of mixing ratio (ppbv) Cumulative fraction of mass c -1

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Page 1: 1.0 Fraction of mass identified 0 - ACP - Recent1.0 0.8 0.6 0.4 0.2 0.0 Fraction of mass identified 1.0 0.8 0.6 0.4 0.2 0.0 Cumulative fraction identified 0 40 80 120 Number of VOC

1.0

0.8

0.6

0.4

0.2

0.0

Frac

tion

of m

ass

iden

tifie

d

1.0

0.8

0.6

0.4

0.2

0.0

Cum

ulat

ive

fract

ion

iden

tifie

d

12080400Number of VOC species identified

1.0

0.8

0.6

0.4

0.2

0.0200150100500

Ion m z (Th)

C

anop

yC

anop

yLi

tter

Log

Log

Can

opy

Can

opy

Can

opy

Can

opy

Duf

f C

anop

yC

anop

yLi

tter

Log

Can

opy

Can

opy

Litte

rdu

ffLi

tter

Litte

rC

lean

Cle

anD

irty

Dirt

yC

lean

Cle

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lean

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irty

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y C

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ior

Exce

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ung

Peat

Ric

e st

raw

Bear

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ssJe

ffrey

pin

e ba

rkBu

ildin

g m

ater

ial

Ponderosapine

Lodgepolepine

Engelmannspruce

Douglasfir

Subalpinefir

Loblollypine

Manzanita

Chamise

Sage

Juniper

Ceanothus

Other

a

b

Cumulative fraction of mixing ratio (ppbv)

Cumulative fraction of mass

c

-1