PcModWin Manual
1
PcModWin Manual
Version 4.0
June 2001
Ontar Corporation
9 Village Way
North Andover, MA 01845 USA
Tel: (USA)-978-689-9622 Fax: (USA)-978-681-4585
http://www.Ontar.com
PcModWin Manual
2
June 2001
Thank you for purchasing PcModWin
Copyright Notice
Your copy of PcModWin (software and documentation) is protected by
copyright. The software s licensed for use on a single computer.
All rights reserved. This publication contains proprietary information which is
protected by copyright. No part of this publication may be reproduced,
transcribed, stored in a retrieval system, translated into any language or
computer language, or transmitted in any form whatsoever without the prior
written consent of the Ontar Corporation. For information, please contact:
Ontar Corporation
9 Village Way
North Andover, MA 01845 USA
Tel: (USA)-978-689-9622 Fax: (USA)-978-681-4585
Disclaimer
Ontar Corporation makes no representation or warranties with respect to the
contents hereof, and specifically disclaims any warranties, implied or
otherwise, of merchantability or suitability for any particular purpose. Ontar
reserves the right to modify this software and associated manual at any time
without obligation on behalf of Ontar Corporation to notify any persons or
party of such modifications.
Ontar provides a complete customer support system for this product. Please
contact us via telephone, fax or e-mail (ontar@shore.net) using our World
Wide Web page at: http://www.ontar.com.
PcModWin Manual
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Table of Contents
1 INTRODUCTION.................................................................................................................................... 10
1.1 S
OFTWARE
I
NSTALLATION
................................................................................................................... 10
1.1.1 PcModWin Installation ................................................................................................................ 11
1.2 S
AMPLE
C
HECKOUT
R
UN
..................................................................................................................... 15
2 PCMODWIN OVERVIEW .................................................................................................................... 27
2.1 P
C
M
OD
W
IN
C
OMPONENTS
.................................................................................................................. 27
2.2 E
ND
-
TO
-
END
MODTRAN R
UN
........................................................................................................... 28
2.3 U
SING THE
P
C
M
OD
W
IN
M
AIN
P
ROGRAM
............................................................................................ 30
2.3.1 PcModWin File menu ................................................................................................................. 33
2.3.1.1 File | Open..............................................................................................................................................33
2.3.1.2 File | Save...............................................................................................................................................34
2.3.1.3 File | Save As..........................................................................................................................................34
2.3.1.3 File | Copy..............................................................................................................................................35
2.3.1.4 File | Edit File.........................................................................................................................................35
2.3.1.5 File | Print Plot .......................................................................................................................................36
2.3.1.6 File | Exit................................................................................................................................................37
2.3.2 Edit Menu.................................................................................................................................... 38
2.3.2.1 Edit | Edit Plot .......................................................................................................................................38
2.3.2.2 Edit | Edit File .......................................................................................................................................39
2.3.2.3 Edit | Edit Run (Batch Mode Operation) ...............................................................................................39
2.3.2.4 Edit | Delete Run (Batch Mode Operation) ...........................................................................................41
2.3.2.5 Edit | Append New Run (Batch Mode Operation).................................................................................41
2.3.3 Modtran Input Menu ................................................................................................................... 42
2.3.3.1 Modtran Input | Open .............................................................................................................................42
2.3.3.2 Modtran Input | Save As........................................................................................................................43
2.3.3.3 Modtran Input | Input screen entries......................................................................................................43
2.3.4 NOVAM Input Menu ................................................................................................................... 44
2.3.4.1 NOVAM Input | Open NOVAM Param.................................................................................................44
2.3.4.2 NOVAM Input | Save NOVAM Param..................................................................................................45
2.3.4.3 NOVAM Input | NOVAM Parameters ...................................................................................................46
2.3.4.4 NOVAM Input | NOVAM Table............................................................................................................47
2.3.4.5 NOVAM Input | Run NOVAM ..............................................................................................................47
2.3.4.6 NOVAM Input | Plot NOVAM Output ..................................................................................................48
2.3.5 Filter Menu ................................................................................................................................. 49
2.3.5.1 Filter | Open...........................................................................................................................................49
2.3.5.2 Filter | Save............................................................................................................................................49
2.3.5.3 Filter | Screen 1 .....................................................................................................................................50
2.3.5.4 Filter | Screen 2 .....................................................................................................................................50
2.3.5.5 Filter | Run Filter...................................................................................................................................50
2.3.6 Scan Menu................................................................................................................................... 51
2.3.6.1 Scan | Open............................................................................................................................................51
2.3.6.2 Scan | Save ............................................................................................................................................52
2.3.6.3 Scan | Screen 1 ......................................................................................................................................52
2.3.6.4 Scan | Run Scan.....................................................................................................................................52
2.3.7 Run Model Menu......................................................................................................................... 53
2.3.7.1 Run Model | Run MODTRAN ..............................................................................................................53
2.3.8 Plot Menu.................................................................................................................................... 54
2.3.8.1 Plot | Database.......................................................................................................................................54
2.3.8.2 Plot | Interactive.....................................................................................................................................55
2.3.8.3 Plot | Multiple Files ...............................................................................................................................57
2.3.8.4 Plot | Difference Plot ..............................................................................................................................58
2.3.8.5 Plot | Plot Spec Flux ...............................................................................................................................60
2.3.8.6 Plot | Edit Plot ........................................................................................................................................61
2.3.9 Window Menu ............................................................................................................................. 63
Contents
PcModWin Manual
4
2.3.9.1 Window | Cascade.................................................................................................................................63
2.3.9.2 Window | Tile........................................................................................................................................64
2.3.9.3 Window | Close All ...............................................................................................................................64
2.3.9.4 Window | Arrange .................................................................................................................................65
2.3.10 Help Menu................................................................................................................................. 65
2.3.10.1 Help | Contents.....................................................................................................................................65
2.3.10.2 Help | Manual .......................................................................................................................................65
2.3.10.3 Help | Documentation...........................................................................................................................65
2.3.10.4 Help | About .........................................................................................................................................66
3 MODTRAN OVERVIEW....................................................................................................................... 67
3.1 P
ATH
G
EOMETRY
................................................................................................................................. 68
3.2 A
EROSOL
M
ODELS
............................................................................................................................... 73
3.3 M
ODEL
A
TMOSPHERES
........................................................................................................................ 77
3.4 LOWTRAN7 ...................................................................................................................................... 86
3.5 U
PGRADES IN
MODTRAN 3.7
AND
4.0 .............................................................................................. 87
3.6 E
LECTRONIC
MODTRAN D
OCUMENTATION
...................................................................................... 91
4 MODTRAN INPUTS............................................................................................................................... 93
4.1 MODTRAN I
NPUT
S
CREENS
.............................................................................................................. 93
4.2 U
SING THE
I
NPUT
I
NTERFACE
.............................................................................................................. 94
4.3 I
NDIVIDUAL
M
ODEL
I
NPUTS
................................................................................................................ 97
4.3.1 Screen “Model Atmosphere”....................................................................................................... 98
4.3.1.1 Calculation Option .................................................................................................................................99
4.3.1.2 Correlation-K Speed.............................................................................................................................100
4.3.1.3 Model Atmosphere...............................................................................................................................101
4.3.1.4 Type of Atmospheric Path....................................................................................................................102
4.3.1.5 Mode of Execution...............................................................................................................................104
4.3.1.6 Execute with Multiple Scattering .........................................................................................................105
4.3.1.7 Temperature and Pressure Altitude Profile...........................................................................................107
4.3.1.8 Water Vapor Altitude Profile ...............................................................................................................108
4.3.1.9 Ozone Altitude Profile..........................................................................................................................109
4.3.1.10 Methane Altitude Profile....................................................................................................................110
4.3.1.11 Nitrous Oxide Altitude Profile ...........................................................................................................111
4.3.1.12 Carbon Monoxide Altitude Profile.....................................................................................................112
4.3.1.13 Other Gases Altitude Profile ..............................................................................................................113
4.3.1.14 Output File Options............................................................................................................................114
4.3.2 Screen “Atmospheric Column Parameters and Files (1A)” ...................................................... 115
4.3.2.1 Water Vapor Column Choices..............................................................................................................116
4.3.2.2 Water Column ......................................................................................................................................117
4.3.2.3 Column Scaling Factor.........................................................................................................................118
4.3.2.4 Ozone Column Parameter.....................................................................................................................119
4.3.2.5 Ozone Column .....................................................................................................................................120
4.3.2.6 Column Scaling Factor.........................................................................................................................121
4.3.2.7 Use Default Band Model.....................................................................................................................122
4.3.2.8 Band Model File Name ........................................................................................................................123
4.3.2.9 Use Instrument Filter File.....................................................................................................................124
4.3.2.10 Instrument Filter File Name ...............................................................................................................125
4.3.2.11 CO
2
Mixing Ratio ..............................................................................................................................126
4.3.3 Screen “Multiple Scattering” .................................................................................................... 127
4.3.3.1 Scattering Algorithm............................................................................................................................128
4.3.3.2 Number of Streams...............................................................................................................................129
4.3.3.3 DISORT Azimuthal Dependence .........................................................................................................130
4.3.4 Screen “Surface at Start of Path”.............................................................................................. 131
4.3.4.1 Temperature at First Boundary.............................................................................................................132
4.3.4.2 Surface Albedo Flag.............................................................................................................................133
4.3.4.3 Surface Albedo (.000 - Blackbody)......................................................................................................134
4.3.5 Screen “Solar Irradiance”......................................................................................................... 141
4.3.5.1 Solar Irradiance Source ........................................................................................................................142
4.3.5.2 Top of Atmosphere Parameters ............................................................................................................143
PcModWin Manual
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4.3.5.3 Scalar Factor ........................................................................................................................................144
4.3.5.4 Solar Constant ......................................................................................................................................145
4.3.5.5 Triangular Filter Width ........................................................................................................................146
4.3.5.6 Modify Solar Database.........................................................................................................................147
4.3.5.7 Solar Database Option..........................................................................................................................148
4.3.5.8 User Supplied File................................................................................................................................149
4.3.6 Screen “Aerosols” ..................................................................................................................... 151
4.3.6.1 Aerosol Model Used............................................................................................................................152
4.3.6.2 Seasonal Modifications to Aerosols ....................................................................................................154
4.3.6.3 Upper Atmosphere Aerosols (30 - 100 km).........................................................................................155
4.3.6.4 Air Mass Character for Navy Maritime Aerosol .................................................................................156
4.3.6.5 Use Cloud / Rain Aerosol Extension...................................................................................................157
4.3.6.6 Use Army (VSA) for Aerosol Extensions ...........................................................................................159
4.3.6.7 Surface Range for Boundary Layer .....................................................................................................161
4.3.6.8 Wind Speed - Navy Maritime Aerosol (m/s).......................................................................................162
4.3.6.9 24 - hr Average Wind Speed - Navy Maritime (m/s) ..........................................................................163
4.3.6.10 Rain Rate (mm/hr).............................................................................................................................164
4.3.6.11 Ground Altitude Above Sea Level ....................................................................................................165
4.3.6.12 Use A+ card.......................................................................................................................................166
4.3.6.13 Use NOVAM Output ........................................................................................................................167
4.3.6.14 User Supplied Spectra .......................................................................................................................169
4.3.7 Screen “Card A+ Aerosol Layers”............................................................................................ 170
4.3.7.1 Bottoms A1+ .......................................................................................................................................171
4.3.7.2 Tops A1+.............................................................................................................................................172
4.3.7.3 Scales ..................................................................................................................................................173
4.3.7.4 Layer Type ..........................................................................................................................................174
4.3.7.5 Aerosol Region x.................................................................................................................................175
4.3.8 Screen “Cirrus Cloud” ............................................................................................................. 176
4.3.8.1 Cirrus Thickness (km).........................................................................................................................177
4.3.8.2 Cirrus Base Altitude (km) ...................................................................................................................178
4.3.8.3 Extinction Coefficient .........................................................................................................................179
4.3.8.4 Random Number Initialization ............................................................................................................180
4.3.9 Cloud Properties....................................................................................................................... 181
4.3.9.1 Cloud Thickness..................................................................................................................................182
4.3.9.2 Cloud Base Altitude ............................................................................................................................183
4.3.9.3 Extinction Coefficient .........................................................................................................................184
4.3.9.4 Number of Layer Boundary Altitudes .................................................................................................185
4.3.9.5 Number of Spectral Data Points..........................................................................................................186
4.3.9.6 Reference Wavelength ........................................................................................................................187
4.3.9.7 Liquid Water Droplet Column Density ...............................................................................................188
4.3.9.8 Ice Particle Column Density................................................................................................................189
4.3.9.9 Relative Humidity at all Boundary Layers ..........................................................................................190
4.3.9.10 Liquid Water Henyey-Greenstein Phase Function ............................................................................191
4.3.9.11 Ice Particle Henyey-Greenstein Phase Function................................................................................192
4.3.10 Screen “User Supplied Cloud and Rain Profile” ................................................................... 193
4.3.10.1 Number of Layers...............................................................................................................................194
4.3.10.2 Altitude...............................................................................................................................................195
4.3.10.3 Water Droplet Density........................................................................................................................196
4.3.10.4 Ice Particle Density ............................................................................................................................197
4.3.10.5 Rain Rate............................................................................................................................................198
4.3.11 Screen “User Supplied Cloud Spectral Data”......................................................................... 199
4.3.11.1 Number of Spectral Points .................................................................................................................200
4.3.11.2 Wavelength ........................................................................................................................................201
4.3.11.3 Extinction Water ................................................................................................................................202
4.3.11.4 Absorption Water ...............................................................................................................................203
4.3.11.5 Asymmetry Water ..............................................................................................................................204
4.3.11.6 Extinction Ice .....................................................................................................................................205
4.3.11.7 Absorption Ice....................................................................................................................................206
4.3.11.8 Asymmetry Ice ...................................................................................................................................207
4.3.12 Screen “VSA Cloud”................................................................................................................ 208
4.3.12.1 VSA Cloud Ceiling Height (km).......................................................................................................209
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