Vaisala IRIS User manual

M211319EN-H
RESTRICTED
User Guide
IRIS Radar
IRIS Product and Display

PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
P.O. Box 26, FI-00421 Helsinki, Finland
[phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala 2021
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Table of contents
1. About This Document..................................................................................... 11
1.1 Version Information............................................................................................ 11
1.2 Related documents.............................................................................................11
1.3 Documentation conventions.............................................................................12
2. IRIS Product Overview...................................................................................13
3. Configuring IRIS Products............................................................................16
3.1 Configuring Products........................................................................................ 16
3.2 Product Configuration Menu.............................................................................17
3.2.1 Associating Products with Tasks................................................................17
3.2.2 Configuring Map Projections......................................................................19
3.2.3 Product Parameters....................................................................................23
3.2.4 Display Parameters.....................................................................................27
3.3 BASE: Echo Base Product................................................................................ 32
3.4 BEAM: Antenna Beam Pattern Product......................................................... 34
3.5 CAPPI: Constant Altitude Plan Position Indicator.........................................36
3.6 FCAST: Forecast................................................................................................ 37
3.7 HMAX: Height of Maximum Intensity Product.............................................. 40
3.8 LAYER: Layer Average.......................................................................................41
3.9 MAX: Maximum Data with Side Panels.......................................................... 43
3.9.1 Configuring MAX Products........................................................................45
3.10 MLHGT: Melting Level Height.......................................................................... 47
3.10.1 MLHGT Algorithm.......................................................................................49
3.10.2 Configuring MLHGT Products................................................................... 52
3.10.3 Using MLHGT Data Flow with Other Products........................................54
3.11 PPI: Plan Position Indicator..............................................................................55
3.12 RAIN1: Hourly Rain Accumulation...................................................................56
3.12.1 Scheduling RAIN1 Products....................................................................... 57
3.13 RAIN-N: N-Hour Rain Accumulation...............................................................59
3.13.1 Scheduling RAIN-N Products................................................................... 60
3.14 RAW: Raw Data................................................................................................. 62
3.14.1 Configuring RAW products....................................................................... 63
3.14.2 Recording RAW Data Automatically........................................................63
3.15 RHI: Range Height Indicator............................................................................64
3.15.1 RHI Cumulonimbus Example.................................................................... 66
3.15.2 Should I Use RHI or XSECT?...................................................................... 67
3.16 RTI: Range Time Indicator................................................................................68
3.17 SRI: Surface Rainfall Intensity...........................................................................71
3.17.1 SRI Algorithm...............................................................................................71
3.17.2 Input Reflectivity Profiles...........................................................................73
3.17.3 Setting the Current Melting Level Without Restarting IRIS...................75
3.17.4 Configuring SRI........................................................................................... 77
3.17.5 SRI Profile Correction Example.................................................................79
3.17.6 Format of Terrain Map File..........................................................................81
3.17.7 SRI References............................................................................................ 82
3.18 STAT: IRIS System Status................................................................................. 82
3.19 THICK: Echo Thickness Product......................................................................84
3.20 TOPS: Echo Tops............................................................................................... 86
3.21 TRACK: Track/Forecast.................................................................................... 88
3.22 VAD: Velocity Azimuth Display....................................................................... 92
3.23 VIL: Vertically Integrated Liquid......................................................................93
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3.24 VVP: Velocity Volume Processing...................................................................96
3.24.1 Producing VVP Product Output............................................................... 99
3.25 WARN: Warning/Centroid Product................................................................ 99
3.25.1 Configuring WARN Products.................................................................. 104
3.26 WIND: Wind Speed and Direction.................................................................108
3.27 XSECT: Cross Section.......................................................................................110
4. Scheduling Products..................................................................................... 113
4.1 Product Scheduler Menu................................................................................. 113
4.2 Scheduling Products........................................................................................ 114
4.3 Adding a Product to Schedule........................................................................119
4.4 Removing a Product from Schedule.............................................................. 119
4.5 Editing Product Configuration........................................................................ 119
4.6 Stopping Product Generation......................................................................... 119
4.7 Tips for Running Radar Products.................................................................. 120
5. Configuring and Scheduling Optional IRIS Products...................... 121
5.1 CATCH: Subcatchments Precipitation Accumulation...................................121
5.1.1 Configuring CATCH Products...................................................................122
5.1.2 Subcatchment Definition......................................................................... 124
5.1.3 Scheduling CATCH Products....................................................................124
5.1.4 CATCH Algorithm...................................................................................... 125
5.1.5 Displaying CATCH..................................................................................... 126
5.2 COMP: Composite............................................................................................128
5.2.1 Composite Algorithm...............................................................................130
5.2.2 System Manager Preparations for Composites...................................... 131
5.2.3 Configuring COMP.....................................................................................132
5.2.4 WARN Algorithm...................................................................................... 136
5.2.5 COMP Scheduling......................................................................................137
5.3 DWELL Algorithm: Composite in Time.........................................................139
5.3.1 DWELL Algorithm Examples...................................................................140
5.3.2 Applying the DWELL Algorithm to Product Scheduling..................... 143
5.3.3 Configuring DWELL Products with Target Detection Disabled.......... 148
5.3.4 DWELL Target Detection Algorithm........................................................ 151
5.3.5 Target Detection: Input Task and Product Optimization......................153
5.3.6 Configuring DWELL Products with Target Detection Enabled............155
5.3.7 Target Detection: Migratory Bird Examples........................................... 157
5.4 GAGE: Raingage Reports................................................................................165
5.4.1 Displaying GAGE.......................................................................................166
5.5 NDOP : Multiple Doppler.................................................................................167
5.5.1 Input Velocity Corrections....................................................................... 169
5.5.2 Configuring NDOP Products.....................................................................171
5.5.3 NDOP Display and Algorithm.................................................................. 173
5.6 SHEAR: Wind Shear.........................................................................................176
5.6.1 SHEAR Algorithm......................................................................................179
5.6.2 Optimizing SHEAR for Microburst Detection........................................ 182
5.7 SLINE: Shear Line............................................................................................ 188
5.7.1 Shear Line Radar Signatures.................................................................... 191
5.7.2 Shear Line Algorithm................................................................................192
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5.8 SWS: Surface Weather Stations.....................................................................192
5.8.1 Displaying SWS Data................................................................................ 193
5.8.2 SWS Output Options................................................................................ 197
5.8.3 SWS Raw Report.......................................................................................198
5.8.4 Configuring SWS Input.............................................................................199
5.8.5 Feeding In SWS Data................................................................................201
5.8.6 METAR and WMO File Format Examples...............................................201
6. Quick Look Window....................................................................................202
6.1 Overview of Quick Look Window.................................................................202
6.2 Setting-Up and Starting Quick Look Windows.......................................... 203
6.3 QLW Control and Monitoring........................................................................204
6.4 Viewing Products in Quick Look Window...................................................206
6.5 QLW Live Action Tool: Product Generation and Display...........................208
6.6 Changing Window Size and Zoom Level.................................................... 209
6.7 Color Scale Tool............................................................................................... 210
6.7.1 Highlight Tool.............................................................................................213
6.8 Display Options Tool - IRIS Product Output.................................................213
6.9 Display Options Tool - Quick Look Window.................................................219
6.10 Product Overlay Tool..................................................................................... 220
6.11 Animation Tool................................................................................................ 222
6.12 Slide Show Tool............................................................................................... 227
6.13 Cursor Tool...................................................................................................... 229
6.13.1 Selecting and Planting Home Points.....................................................230
6.13.2 Creating Named Home Points (Operators only)................................... 231
6.14 Track/Annotate Tool.......................................................................................232
6.14.1 Creating and Editing a Track.................................................................. 234
6.14.2 Adding and Editing Annotation Text..................................................... 237
6.14.3 Adding and Deleting Tracking and Annotation Icons......................... 238
6.14.4 Tracking Typhoons With the Add Spiral Option...................................238
6.15 Forecast Tool.................................................................................................... 241
6.16 Cross-Section (XSECT) Tool..........................................................................243
6.16.1 Creating a Cross-Section.........................................................................245
6.17 Product Output Options Tool........................................................................247
6.17.1 CAPPI Height Selection Tool...................................................................248
6.17.2 THICK Output Options............................................................................ 248
6.17.3 NDOP Output Options.............................................................................249
6.17.4 VAD Output Options................................................................................249
6.17.5 VVP Output Options: Time-Height......................................................... 251
6.17.6 VVP Output Options: Line Graphs......................................................... 253
6.17.7 WARN Output Options............................................................................256
6.17.8 WIND and FCAST Output Options.........................................................257
6.18 Printing and Exporting Displays................................................................... 258
6.19 QLW Keyboard Commands...........................................................................259
7. Requesting Product Output.................................................................... 260
7.1 Overview of Requesting Product Output....................................................260
7.2 Product Output Devices and Files............................................................... 260
7.3 Accessing the Product Output Menu............................................................ 261
7.3.1 Product Output Filters..............................................................................261
7.3.2 Product Output: Product List................................................................. 264
7.4 Sending a Product to a Device..................................................................... 266
7.5 Flagging a Product.........................................................................................268
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8. Performing Archive Operations............................................................. 269
8.1 Overview of Archive and Retrieve Operations........................................... 269
8.2 Using the Archive Menu.................................................................................269
8.2.1 Archive Control Area.................................................................................271
8.2.2 Archive Log Area......................................................................................274
8.3 Initializing a Tape or Disk for Recording...................................................... 276
8.4 Mounting a Tape or Disk.................................................................................277
8.5 Recording Data............................................................................................... 278
8.6 Creating and Printing a Log.......................................................................... 279
8.6.1 Creating a Tape Log................................................................................. 279
8.6.2 Printing a Tape or Disk Log.....................................................................280
8.7 Retrieving Product Files from an Archive................................................... 280
8.8 Stopping an Archive Operation..................................................................... 281
8.9 Unmounting a Tape or Disk........................................................................... 282
9. Managing Ingest Files.................................................................................283
9.1 Managing Ingest Files.................................................................................... 283
9.2 Tagging and Untagging Ingest Files............................................................ 286
10. Choosing Overlay Files.............................................................................. 287
10.1 Overlay Overview........................................................................................... 287
10.2 Invoking Overlay............................................................................................. 287
10.3 Overlay Header...............................................................................................294
10.4 Assigning an Overlay to a Radar Site...........................................................295
Appendix A: Basic Radar Meteorology................................................... 296
A.1 Introduction to Radar Meteorology............................................................. 296
A.2 Reflectivity.......................................................................................................297
A.3 Geometry.........................................................................................................298
A.4 Problems in Interpreting Radar Images.......................................................299
A.5 Doppler Wind Measurements.......................................................................300
A.6 Clutter Cancellation.......................................................................................300
Appendix B: Radial Velocity Correction..................................................302
B.1 Radial Velocity Correction.............................................................................302
B.1.1 Motion Parameters and Coordinate Transformations......................... 302
B.1.2 Radial Velocity Correction...................................................................... 303
B.1.3 Aircraft Tail Radars.................................................................................. 305
B.1.4 Configuring Radial Velocity Correction................................................ 306
B.1.5 Testing Radial Velocity Correction.........................................................307
B.1.6 In Situ Testing Suggestions.....................................................................307
B.1.7 Velocity Correction Algorithm: INU Example.......................................308
Appendix C: IRIS 3DView.............................................................................310
C.1 IRIS 3DView Overview.................................................................................... 310
C.1.1 IRIS 3DView in System Architecture........................................................ 311
C.1.2 IRIS 3DView System Requirements.........................................................312
C.2 Installing IRIS 3DView..................................................................................... 313
C.3 Getting Started with IRIS 3DView................................................................. 319
C.4 Opening Data Files in IRIS 3DView.............................................................. 320
C.5 Rendering Modes........................................................................................... 320
C.5.1 Surface Rendering................................................................................... 320
C.5.2 Volume Rendering.....................................................................................321
C.6 Managing the IRIS 3D Display....................................................................... 323
C.7 Using the IRIS 3DView Export Tool.............................................................. 324
C.8 Using the Product Information Tool............................................................. 327
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C.9 Using the IRIS 3DView Cursor Tool...............................................................328
C.10 Adjusting IRIS 3DView Screen Settings.......................................................330
C.11 Playing Back Data.......................................................................................... 330
C.12 Managing IRIS 3DView Settings....................................................................332
Appendix D: IRIS TDWR Features.............................................................334
D.1 Items Provided with IRIS/TDWR Option..................................................... 334
D.2 IRIS/TDWR Terminology................................................................................335
D.3 IRIS/TDWR Hardware Configuration Example........................................... 336
D.4 Data Flow for Ribbon Display Generation................................................... 337
D.5 IRIS/TDWR Configuration Summary............................................................338
D.6 IRIS Preparation..............................................................................................338
D.6.1 Configuring Protected Areas (Arenas) for TDWR................................338
D.6.2 Configuring IRIS Tasks and Products for TDWR.................................. 340
D.6.3 Configuring IRIS Product Outputs for TDWR...................................... 340
D.7 Ribbon Displays.............................................................................................. 342
D.7.1 Supported Ribbon Displays....................................................................343
D.7.2 Dale Ribbon Display Hardware Installation.......................................... 343
D.7.3 Dale Ribbon Display General Use.......................................................... 344
D.7.4 IRIS Virtual Ribbon Display.....................................................................346
D.7.5 Configuring Ribbon Display Software................................................... 347
D.7.6 Ribbon Display Testing with tdwr_sim...................................................351
D.7.7 Ribbon Display Alert Messages..............................................................353
D.8 TDWR/LLWAS Integrator and Runways Utility...........................................353
D.8.1 Configuring Integrator and Runways Utility - runways.conf.............. 354
D.8.2 Starting Integrator Utility........................................................................359
D.8.3 Runways Utility........................................................................................ 360
Appendix E: Hydromet Raingage Correction.........................................363
E.1 Hydromet Raingage Correction Overview.................................................. 363
E.2 Hydromet Data Flow for Raingage Correction........................................... 363
E.3 Gage Data File Format...................................................................................366
E.4 Configuring RAIN1 with Raingage Correction............................................ 368
E.5 Algorithm for RAIN1 Gage Calibration.......................................................... 371
E.6 RAIN1 Scheduling with GAGE Product.........................................................372
E.7 Hydromet Raingage References................................................................... 374
Appendix F: Task Configuration Examples............................................. 375
F.1 Task configurations.........................................................................................375
F.1.1 SURVEILLANCE........................................................................................ 375
F.1.2 VOL_A........................................................................................................377
F.1.3 VOL_B........................................................................................................378
F.1.4 WIND......................................................................................................... 379
F.1.5 SUNCAL and ZDRCAL tasks...................................................................380
F.2 Product configurations and scheduler..........................................................381
F.2.1 RAW products........................................................................................... 381
F.2.2 Melting height products.......................................................................... 382
F.2.3 Product Scheduler................................................................................... 383
Index................................................................................................................. 385
Warranty.......................................................................................................... 389
Technical support.......................................................................................... 389
Recycling......................................................................................................... 389
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List of figures
Figure 1 Example of 15-tilt Volume Scan................................................................... 19
Figure 2 Color Legend Format Example...................................................................30
Figure 3 BASE Example Configuration...................................................................... 32
Figure 4 BEAM Example Configuration.....................................................................34
Figure 5 CAPPI Example Configuration.....................................................................36
Figure 6 FCAST Example Configuration....................................................................38
Figure 7 HMAX Configuration Example ...................................................................40
Figure 8 Example of 15-tilt Volume Scan.................................................................. 42
Figure 9 LAYER Configuration Example....................................................................42
Figure 10 Example MAX Display................................................................................... 44
Figure 11 MAX Example Configuration....................................................................... 45
Figure 12 Melting Level Height Detection.................................................................. 48
Figure 13 MLHGT Algorithm Flow Diagram............................................................... 50
Figure 14 MLHGT Configuration Example...................................................................52
Figure 15 MLHGT Data Flow for Use with Other Products.....................................54
Figure 16 PPI Example Configuration.......................................................................... 55
Figure 17 RAIN1 Example Configuration..................................................................... 56
Figure 18 RAIN-N Example Configuration..................................................................59
Figure 19 RAW Example Configuration.......................................................................62
Figure 20 RHI Example Configuration......................................................................... 64
Figure 21 RHI Cumulonimbus Example.......................................................................66
Figure 22 RTI Example Configuration.......................................................................... 68
Figure 23 SRI Reflectivity Profile Example..................................................................72
Figure 24 VVP Reflectivity Profile Example ...............................................................74
Figure 25 SRI Configuration Example.......................................................................... 77
Figure 26 Example Profile Correction against Range...............................................81
Figure 27 THICK Example Configuration.................................................................... 84
Figure 28 TOPS Example Configuration......................................................................86
Figure 29 Example of 15-tilt Volume Scan...................................................................87
Figure 30 TRACK Example Configuration...................................................................88
Figure 31 TRACK with Two Centroids..........................................................................89
Figure 32 VAD Example Configuration........................................................................ 92
Figure 33 VIL Example Configuration.......................................................................... 93
Figure 34 Example of 15-tilt Volume Scan.................................................................. 95
Figure 35 VVP Example Configuration........................................................................ 96
Figure 36 Example of Radial Velocity against Azimuth Display........................... 97
Figure 37 HAIL Warning/Centroid................................................................................101
Figure 38 Example of Warning Situation Display....................................................102
Figure 39 WIND Example Configuration................................................................... 108
Figure 40 XSECT Configuration Example...................................................................110
Figure 41 Cross Section Geometry................................................................................111
Figure 42 Product Scheduler..........................................................................................113
Figure 43 CATCH Example Configuration..................................................................122
Figure 44 CATCH Product Display............................................................................... 126
Figure 45 Example of Composite Projection Geometry........................................128
Figure 46 COMP Configuration Example....................................................................132
Figure 47 Composite Scheduling Example................................................................137
Figure 48 DWELL Schematic Example.......................................................................139
Figure 49 PPI of dBZ at a Single Time......................................................................... 141
Figure 50 DWELL of PPI for the Previous 2 Hours Showing dBZ........................142
Figure 51 Dwell of PPI for the Previous 2 Hours Showing Time (Age)..............143
Figure 52 Background Field for 2-Hour Dwell Showing dBZ...............................146
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Figure 53 DWELL Example Configuration with Target Detection Disabled.....148
Figure 54 Schematic of Target Warning Algorithm................................................ 152
Figure 55 Target Detection Configuration Example............................................... 155
Figure 56 Raingage Product Display.......................................................................... 166
Figure 57 Raingage Datagram......................................................................................167
Figure 58 Dual Doppler Geometry Plan View...........................................................168
Figure 59 NDOP Example Configuration.................................................................... 171
Figure 60 Example NDOP Display................................................................................174
Figure 61 SHEAR Example Configuration..................................................................176
Figure 62 Schematic Examples of Wind Shear........................................................ 178
Figure 63 Radial Shear Algorithm Schematic.......................................................... 180
Figure 64 B-Scan Space (PPI surface)........................................................................ 182
Figure 65 TASK Configuration for Microburst Detection.......................................185
Figure 66 SLINE Example Configuration....................................................................188
Figure 67 Typical Shear Line Example........................................................................189
Figure 68 Example of Radar Data with an Overlay of SWS Station Plots.........193
Figure 69 IRIS Single Station Plot................................................................................ 193
Figure 70 Okta Standard Symbols...............................................................................194
Figure 71 Present Weather (METAR text-to-symbol matching)......................... 195
Figure 72 SWS Pressure Trend Symbols.................................................................... 197
Figure 73 SWS Tool..........................................................................................................198
Figure 74 SWS Raw Report Example..........................................................................199
Figure 75 Example QLW: PPI Reflectivity (480 x 480 window size
with range rings and overlay)................................................................... 202
Figure 76 Quick Look Window.....................................................................................207
Figure 77 Example Live Action Tool for CAPPI....................................................... 208
Figure 78 Color Scale Tool...............................................................................................211
Figure 79 Display Options Menu.................................................................................. 214
Figure 80 Product Overlay Tool.................................................................................... 221
Figure 81 Quick Look Window Animation Tool.......................................................222
Figure 82 Slide Show Tool............................................................................................. 227
Figure 83 Cursor Tool..................................................................................................... 229
Figure 84 Cursor Set/Plant Tool................................................................................... 231
Figure 85 QLW Track/Annotate Tool.......................................................................... 232
Figure 86 Typhoon Track Example..............................................................................239
Figure 87 Forecast Example with a Typhoon...........................................................242
Figure 88 Cross-section with Typhoon Example....................................................244
Figure 89 Cross-Section Range Scale........................................................................245
Figure 90 THICK Output Tool....................................................................................... 248
Figure 91 Example of Velocity Azimuth Display.................................................... 250
Figure 92 VAD Output Tool...........................................................................................250
Figure 93 WARN Output Options............................................................................... 256
Figure 94 Product Output Filters................................................................................. 261
Figure 95 Archive Menu................................................................................................. 270
Figure 96 Archive Control Area.................................................................................... 271
Figure 97 Archive Log Area...........................................................................................274
Figure 98 Ingest Summary Menu................................................................................ 283
Figure 99 Site Overlay Example.................................................................................. 295
Figure 100 Range Bin Geometry................................................................................... 296
Figure 101 dBZ Values for Various Phenomena........................................................298
Figure 102 Beam Height vs. Range...............................................................................299
Figure 103 Typical Spectrum Plot..................................................................................301
Figure 104 Vectors used for Velocity Correction In Earth Coordinates..............304
Figure 105 IRIS 3DView User Interface.......................................................................... 311
Figure 106 IRIS 3DView Data Flow.................................................................................312
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Figure 107 IRIS 3DView Starting View.......................................................................... 319
Figure 108 Example of Surface Rendering.................................................................. 321
Figure 109 Example of Volume Rendering................................................................. 322
Figure 110 IRIS 3D Display.............................................................................................. 323
Figure 111 Export Tool..................................................................................................... 325
Figure 112 IRIS 3DView Background Output Configuration Window.................326
Figure 113 Product Information Tool............................................................................327
Figure 114 Cursor Tool..................................................................................................... 329
Figure 115 IRIS 3DView Animation Toolbar............................................................... 330
Figure 116 IRIS 3DView Settings Window.................................................................. 332
Figure 117 IRIS/TDWR Hardware Configuration Example.....................................336
Figure 118 Data Flow for Generating TDWR Ribbon Display Products..............337
Figure 119 Configuring Protected Areas for TDWR.................................................339
Figure 120 Dale Ribbon Display Installation.............................................................. 344
Figure 121 Dale Ribbon Display Controls................................................................... 344
Figure 122 vribbon Display.............................................................................................346
Figure 123 Ribbon Display Setup Menu...................................................................... 350
Figure 124 TDWR Ribbon Display Alert Messages...................................................353
Figure 125 IRIS/Integrator Communication...............................................................354
Figure 126 RAIN1 Raingage Correction Data Flow...................................................364
Figure 127 SURVEILLANCE task configuration: dual-polarization...................... 376
Figure 128 VOL_A task configuration - dual polarization...................................... 378
Figure 129 VOL_B task configuration - dual polarization...................................... 379
Figure 130 WIND task configuration............................................................................380
Figure 131 SUNCAL and ZDRCAL task configurations............................................ 381
Figure 132 Melting height product configuration.....................................................382
Figure 133 Default Product Scheduler.........................................................................383
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