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Table of Contents - The Atmospheric Studies Group at TRC

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Section 9: CALPUFF<br />

<strong>Table</strong> 9-39:<br />

Sample User-Specified Chemical Transform<strong>at</strong>ion R<strong>at</strong>e D<strong>at</strong>a File (CHEM.DAT)<br />

CHEMICAL TRANSFORMATION RATE FILE (CHEM.DAT)<br />

--------------------------------------------<br />

CHEM.DAT contains a 24-hour diurnal cycle <strong>of</strong> chemical transform<strong>at</strong>ion<br />

r<strong>at</strong>es for the chemical transform<strong>at</strong>ion <strong>of</strong> SO2 to SO4, and NOx to HNO3/PAN.<br />

k1 = SO2 to SO4 transform<strong>at</strong>ion r<strong>at</strong>e(percent/hour)<br />

k2 = NOx to HNO3 + PAN transform<strong>at</strong>ion r<strong>at</strong>e (percent/hour)<br />

k3 = NOx to HNO3 (only) transform<strong>at</strong>ion r<strong>at</strong>e (percent/hour)<br />

<strong>The</strong> first value correspond to the period from 0:00 to 1:00, and the 24th value corresponds to<br />

23:00-0:00.<br />

TRANSFORMATION RATE (percent/hour)<br />

----------------------------------<br />

! K1 = 7*0.2, 0.4, 0.8, 1.2, 1.6, 3*2.0, 1.6, 1.2, 0.8, 0.4, 6*0.2 !<br />

! K2 = 7*2.0, 4.0, 8.0,12.0,15.0, 3*20.0, 15.0, 12.0, 8.0, 4.0, 6*2.0 !<br />

! K3 = 7*2.0, 3.0, 6.0, 8.0,11.0, 3*15.0, 11.0, 8.0, 6.0, 3.0, 6*2.0 !<br />

!END!<br />

9-220

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