AZWRAP/CharacteristicRateofSpread (ImageServer)

View In: ArcGIS JavaScript ArcGIS Online Map Viewer ArcGIS Earth ArcMap

View Footprint In: ArcGIS Online Map Viewer

Service Description: Rate of Spread (ROS) is a fire behavior output generated during the calculation of the Fire Threat Index (FTI). Rate of spread is the speed with which a fire moves in a horizontal direction across the landscape, expressed in chains per hour (ch/hr) or feet per minute (ft/min). For purposes of the West Wide Wildfire Risk Assessment, this measurement represents the maximum rate of spread of the fire front. Fire behavior outputs are influenced by three environmental factors - fuels, weather, and topography. Weather is by far the most dynamic variable as it changes frequently. To account for this variability, four weather percentiles categories were created from historical weather observations to represent low, moderate, high, and extreme weather days for each weather influence zone. A weather influence zone is an area where, for analysis purposes, the weather on any given day is considered uniform. Fire behavior outputs (fire type, rate of spread, flame length, and fireline intensity) are computed for each of these percentile weather categories in order to determine potential fire behavior under different weather scenarios.

Name: AZWRAP/CharacteristicRateofSpread

Description: Rate of Spread (ROS) is a fire behavior output generated during the calculation of the Fire Threat Index (FTI). Rate of spread is the speed with which a fire moves in a horizontal direction across the landscape, expressed in chains per hour (ch/hr) or feet per minute (ft/min). For purposes of the West Wide Wildfire Risk Assessment, this measurement represents the maximum rate of spread of the fire front. Fire behavior outputs are influenced by three environmental factors - fuels, weather, and topography. Weather is by far the most dynamic variable as it changes frequently. To account for this variability, four weather percentiles categories were created from historical weather observations to represent low, moderate, high, and extreme weather days for each weather influence zone. A weather influence zone is an area where, for analysis purposes, the weather on any given day is considered uniform. Fire behavior outputs (fire type, rate of spread, flame length, and fireline intensity) are computed for each of these percentile weather categories in order to determine potential fire behavior under different weather scenarios.

Single Fused Map Cache: false

Extent:

Initial Extent:

Full Extent:

Pixel Size X: 30.0

Pixel Size Y: 30.0

Band Count: 1

Pixel Type: F32

RasterFunction Infos: {"rasterFunctionInfos": [ { "name": "CharacteristicRateofSpread", "description": "A raster function template.", "help": "" }, { "name": "None", "description": "", "help": "" } ]}

Mensuration Capabilities: Basic

Has Histograms: true

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 0

Max Scale: 0

Copyright Text:

Service Data Type: esriImageServiceDataTypeGeneric

Min Values: 0

Max Values: 190.48623657226562

Mean Values: 11.457955732204216

Standard Deviation Values: 11.101936411234258

Object ID Field:

Fields: None

Default Mosaic Method: Center

Allowed Mosaic Methods:

SortField:

SortValue: null

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Bilinear

Max Record Count: null

Max Image Height: 4100

Max Image Width: 15000

Max Download Image Count: null

Max Mosaic Image Count: null

Allow Raster Function: true

Allow Compute TiePoints: false

Supports Statistics: false

Supports Advanced Queries: false

Use StandardizedQueries: true

Raster Type Infos:

Has Raster Attribute Table: false

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

Child Resources: Info Histograms Key Properties Legend MultiDimensionalInfo rasterFunctionInfos

Supported Operations: Export Image Identify Measure Compute Histograms Compute Statistics Histograms Get Samples Compute Class Statistics Query Boundary Compute Pixel Location