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hurricane_helene_2024/Experimental_Binary_NDVI_Change_Product (MapServer)

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Service Description:

The Experimental Binary NDVI change product is highlighting areas that experienced change (of any kind) since the pre-event Copernicus Sentinel-2 pass (22 September 2024) used in the analysis. The product is further filters to reduce noise and focus the identification on the more pronounced areas of change in an effort to identify areas that may have experienced damage during Hurricane Helene's passage and associated water and wind impacts.

Usage:

This binary mask layer is designed to overlaid with post event imagery (pre if it is available as well). The True color imagery or the Color IR RGB should be used to orient the user to areas that match the type of change being investigated. Color IR RGB uses infrared channels to isolate areas of high vegetation (and greenness) in red from areas that are not, such as cities, rivers, which will appear in shades of green/teal. Clouds are white while cloud shadows tend to be black (or close to it)

Caveats:

The include cloud mask is not capturing all of the clouds and is causing some areas to be falsely identified as change in the product. This is why it is recommended to use the product with the True Color and Color Infrared RGB. Some areas of open water were flagged as change and this is most likely due to changes of sediment and debris in these open water areas. Many areas of changed were flagged within areas of rugged terrain. Some of these area are actual changed as result of damaging winds and water. Others may be related to clouds and cloud shadows. Using the this product with the RGB imagery should be help support interpretation.

Satellite/Sensor:

Copernicus Sentinel-2

Resolution:

10 meters

Esri REST Endpoint:

See URL section on right side of page

WMS Endpoint:

https://maps.disasters.nasa.gov/ags03/services/hurricane_helene_2024/Experimental_Binary_NDVI_Change_Product/MapServer/WMSServer

Data Download:

https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/hurricane_helene_202409/NDVIchange/



Map Name: Map

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers: Description: The Experimental Binary NDVI change product is highlighting areas that experienced change (of any kind) since the pre-event Copernicus Sentinel-2 pass (22 September 2024) used in the analysis. The product is further filters to reduce noise and focus the identification on the more pronounced areas of change in an effort to identify areas that may have experienced damage during Hurricane Helene's passage and associated water and wind impacts. Usage: This binary mask layer is designed to overlaid with post event imagery (pre if it is available as well). The True color imagery or the Color IR RGB should be used to orient the user to areas that match the type of change being investigated. Color IR RGB uses infrared channels to isolate areas of high vegetation (and greenness) in red from areas that are not, such as cities, rivers, which will appear in shades of green/teal. Clouds are white while cloud shadows tend to be black (or close to it) Caveats: The include cloud mask is not capturing all of the clouds and is causing some areas to be falsely identified as change in the product. This is why it is recommended to use the product with the True Color and Color Infrared RGB. Some areas of open water were flagged as change and this is most likely due to changes of sediment and debris in these open water areas. Many areas of changed were flagged within areas of rugged terrain. Some of these area are actual changed as result of damaging winds and water. Others may be related to clouds and cloud shadows. Using the this product with the RGB imagery should be help support interpretation. Satellite/Sensor:Copernicus Sentinel-2 Resolution:10 metersEsri REST Endpoint:See URL section on right side of pageWMS Endpoint:https://maps.disasters.nasa.gov/ags03/services/hurricane_helene_2024/Experimental_Binary_NDVI_Change_Product/MapServer/WMSServerData Download:https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/hurricane_helene_202409/NDVIchange/

Service Item Id: bdca1a90835c4ab19877371aa4b99789

Copyright Text: MSFC, NASA, Copernicus Sentinel-2

Spatial Reference: 32617  (32617)


Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info: Supports Dynamic Layers: true

MaxRecordCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true



Child Resources:   Info   Dynamic Layer

Supported Operations:   Export Map   Identify   QueryLegends   QueryDomains   Find   Return Updates