CONTENTS

Page

DISCLAIMER . . . . . . . . . . . . . . . . . . . . . . . . . . ii

TABLES............................ v

ABBREVIATIONS.........................vii

ACKNOWLEDGEMENTS...................... ix90

1 INTRODUCTION....................... 1

2 MODELINGPROTOCOL.................... 5

2.1 Protocol Development Process . . . . . . . . . . . . 6

2.2 Contents of Protocol Document. . . . . . . . . . . . 8

3 DOMAINANDDATABASEISSUES............... 11

3.1 Episode Selection. . . . . . . . . . . . . . . . . . 11

3.2 Size of the Modeling Domain. . . . . . . . . . . . . 15

3.3 Horizontal Grid Cell Size. . . . . . . . . . . . . . 16

3.4 Number of Vertical Layers. . . . . . . . . . . . . . 17

3.5 Meteorological Data. . . . . . . . . . . . . . . . . 19

3.5.1 Wind fields. . . . . . . . . . . . . . . . . 19

3.5.2 Data needs for wind field

development . . . . . . . . . . . . . . . . 23

3.5.3 Mixing heights . . . . . . . . . . . . . . . 24

3.5.4 Clear-sky assumption for photolysis rate

calculations . . . . . . . . . . . . . . . . 25

3.6 Air Quality. . . . . . . . . . . . . . . . . . . . . 26

3.6.1 Initial and boundary conditions. . . . . . . 26

3.6.2 Performance Evaluation Data. . . . . . . . . 31

3.7 Emissions. . . . . . . . . . . . . . . . . . . . . . 32

3.7.1 VOC speciation . . . . . . . . . . . . . . . 35

3.7.2 Spatial gridding of area sources . . . . . . 35

3.7.3 Mobile sources . . . . . . . . . . . . . . . 36

3.7.4 Episode-specific adjustments . . . . . . . . 37

 

 

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