MODIS Collection 5 Active Fire Product User's Guide Version ... - FAO

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Contents1 Introduction 72 Overview of the MODIS Active Fire Products 72.1 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1.1 Granules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1.2 Tiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1.3 Climate Modeling Grid (CMG) . . . . . . . . . . . . . . . . . . . . . . . 82.1.4 Collections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.2 Level 2 Fire Products: MOD14 (Terra) and MYD14 (Aqua) . . . . . . . . . . . . . 82.3 Level 2G Daytime and Nighttime Fire Products: MOD14GD/MOD14GN (Terra)and MYD14GD/MYD14GN (Aqua) . . . . . . . . . . . . . . . . . . . . . . . . . 92.4 Level 3 8-Day Daily Composite Fire Products: MOD14A1 (Terra) and MYD14A1(Aqua) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.5 Level 3 8-Day Summary Fire Products: MOD14A2 (Terra) and MYD14A2 (Aqua) 102.6 Climate Modeling Grid Fire Products (MOD14CMH, MYD14CMH, etc.) . . . . . 112.7 Global Monthly Fire Location Product (MCD14ML) . . . . . . . . . . . . . . . . 112.8 The Rapid Response Fire Products . . . . . . . . . . . . . . . . . . . . . . . . . . 122.9 LDOPE Global Browse Imagery . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Obtaining the MODIS Active Fire Products 143.1 The Warehouse Inventory Search Tool (WIST) . . . . . . . . . . . . . . . . . . . . 153.2 University of Maryland ftp Server . . . . . . . . . . . . . . . . . . . . . . . . . . 163.2.1 MODIS CMG Active-Fire Products . . . . . . . . . . . . . . . . . . . . . 163.2.2 MODIS Monthly Fire Location Product . . . . . . . . . . . . . . . . . . . 163.2.3 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173.2.4 Collection 4 Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173.2.5 VIRS Monthly Fire Product . . . . . . . . . . . . . . . . . . . . . . . . . 174 Detailed Product Descriptions 184.1 MOD14 and MYD14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.1.1 Fire Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.1.2 Detection Confidence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184.1.3 Algorithm Quality Assessment Bits . . . . . . . . . . . . . . . . . . . . . 194.1.4 Fire Pixel Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.1.5 Metadata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.1.6 Example Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214.2 MOD14A1 and MYD14A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.2.1 Fire Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.2.2 QA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.2.3 Maximum FRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.2.4 Scan Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.2.5 Metadata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234.2.6 Level 3 Tile Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244.2.7 Example Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.3 MOD14A2 and MYD14A2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
4.3.1 Fire Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.3.2 QA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.3.3 Level 3 Tile Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.3.4 Example Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.4 CMG Fire Products (MOD14CMH, MYD14CMH, etc.) . . . . . . . . . . . . . . . 304.4.1 CMG Naming Convention . . . . . . . . . . . . . . . . . . . . . . . . . . 304.4.2 Data Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.4.3 Global Metadata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.4.4 Climate Modeling Grid Navigation . . . . . . . . . . . . . . . . . . . . . 314.4.5 Example Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324.5 Global Monthly Fire Location Product (MCD14ML) . . . . . . . . . . . . . . . . 334.5.1 Naming Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334.5.2 Example Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345 Validation of the MODIS Active Fire Products 355.1 Validation Based on ASTER Imagery . . . . . . . . . . . . . . . . . . . . . . . . 355.2 Other Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356 Caveats and Known Problems 366.1 Caveats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366.1.1 Fire Pixel Locations vs. Gridded Fire Products . . . . . . . . . . . . . . . 366.2 Collection 5 Known Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366.2.1 Pre-November 2000 Data Quality . . . . . . . . . . . . . . . . . . . . . . 366.2.2 Detection Confidence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366.2.3 False Alarms in Small Forest Clearings . . . . . . . . . . . . . . . . . . . 376.2.4 False Alarms During Calibration Maneuvers . . . . . . . . . . . . . . . . 387 Frequently Asked Questions 397.1 Terra and Aqua Satellites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.1.1 Where can I find general information about the Terra and Aqua satellites? . 397.1.2 When were the Terra and Aqua satellites launched? . . . . . . . . . . . . . 397.1.3 How can I determine overpass times of the Terra and Aqua satellites for aparticular location? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.2 General MODIS Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.2.1 Where can I find Algorithm Technical Basis Documents (ATBDs) for theMODIS land products? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.2.2 Do the MODIS sensors have direct broadcast capability? . . . . . . . . . . 397.3 General Fire Product Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.3.1 How are the fires and other thermal anomalies identified in the MODIS fireproducts detected? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.3.2 What is the smallest fire size that can be detected with MODIS? What aboutthe largest? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.3.3 Why didn’t MODIS detect a particular fire? . . . . . . . . . . . . . . . . . 407.3.4 How well can MODIS detect understory burns? . . . . . . . . . . . . . . . 407.3.5 Can MODIS detect fires in unexposed coal seams? . . . . . . . . . . . . . 407.3.6 How do I obtain the MODIS fire products? . . . . . . . . . . . . . . . . . 407.3.7 What validation of the MODIS active fire products has been performed? . . 413
Page 1: MODIS Collection 5 Active Fire Prod
Page 6: List of Tables1 MODIS fire product
Page 9 and 10: Figure 2: Example MOD14 granule wit
Page 11 and 12: 2.6 Climate Modeling Grid Fire Prod
Page 13 and 14: 2.9 LDOPE Global Browse ImageryThe
Page 15 and 16: 3.1 The Warehouse Inventory Search
Page 17 and 18: 3.2.3 DocumentationThe most recent
Page 19 and 20: 4.1.3 Algorithm Quality Assessment
Page 21 and 22: 4.1.6 Example CodeExample 1: IDL co
Page 23 and 24: 4.2.5 MetadataAs with the Level 2 f
Page 25 and 26: Inverse MappingHere we are given th
Page 27 and 28: 4.3 MOD14A2 and MYD14A2The MOD14A2
Page 29 and 30: Example 6: C code for reading Level
Page 31 and 32: Satellite‘O’ = Terra‘Y’ = A
Page 33 and 34: 4.5 Global Monthly Fire Location Pr
Page 35 and 36: 5 Validation of the MODIS Active Fi
Page 37 and 38: 6.2.3 False Alarms in Small Forest
Page 39 and 40: 7 Frequently Asked Questions7.1 Ter
Page 41 and 42: 7.3.7 What validation of the MODIS
Page 43 and 44: assume these have been read and sto
Page 45 and 46: 7.5 Level 3 Tiled Fire Products7.5.
Page 47 and 48: 7.6 Level 3 CMG Fire Products7.6.1
Page 49 and 50: 7.6.2 Why don’t you distribute a
Page 51 and 52: Figure 14: DS9 displaying the CorrF
Page 53 and 54:
7.6.7 Does the last 8-day CMG produ
Page 55 and 56:
7.7 Global Monthly Fire Location Pr
Page 57 and 58:
7.9 Miscellaneous Questions7.9.1 Ar
Page 59 and 60:
Morisette, J. T., Giglio, L., Csisz
Page 61:
• SSEC Terra and Aqua Orbit Track
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MODIS Collection 5 Active Fire Product User's Guide Version ... - FAO

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