tropical_storm_sara_202411/sentinel1 (MapServer)

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View Footprint In: ArcGIS Online Map Viewer

Service Description:

Dates of Images:

Pre-Event: 11/4/2024, 11/6/2024, 11/11/2024

Post-Event: 11/16/2024, 11/18/2024

Date of Next Image:

Varies by region, typically 12 days since previous pass. Set time slider to most recent interval and click on area of interest to identify date of last pass.

Summary:

The Alaska Satellite Facility has developed false color Red, Green, Blue (RGB) and Radiometrically Terrain-Correct (RTC) composites and surface water extent products of the Sentinel-1A/B Synthetic Aperture Radar (SAR) instrument which assigns the co- and cross-polarization information to a channel in the composite. When used to support a flooding event, areas in blue denotes water present at the time of the satellite overpass before or after the start of the flooding event.

Sentinel-1 RGB Decomposition of RTC VV and VH imagery over United States coastlines. Blue areas have low returns in VV and VH (smooth surfaces such as calm water, but also frozen/crusted soil or dry sand), Green areas have high returns in VH (volume scatterers such as vegetation or some types of snow/ice), and Red areas have relatively high VV returns and relatively low VH returns (such as urban or sparsely vegetated areas).

Suggested Use:

In the RGB images, water appears in blue, vegetated areas in shades of green and urban areas in bright orange. It is recommended to use this product with ancillary information to derive flooded areas.

In the Water Extent images, data is classified from the above imagery shows water, including flooded areas, as blue.

Satellite/Sensor:

Synthetic Aperture Radar on European Space Agency's (ESA) Copernicus Sentinel-1A satellite

Resolution:

20 meters

Esri REST Endpoint:

See URL on the right.

WMS Endpoint:

https://maps.disasters.nasa.gov/ags04/services/tropical_storm_sara_202411/sentinel1/MapServer/WMSServer

Data Download:

https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/tropical_storm_sara_202411/sentinel1/

Map Name: sentinel1

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers:

Description: Dates of Images:Pre-Event: 11/4/2024, 11/6/2024, 11/11/2024Post-Event: 11/16/2024, 11/18/2024Date of Next Image:Varies by region, typically 12 days since previous pass. Set time slider to most recent interval and click on area of interest to identify date of last pass.Summary:The Alaska Satellite Facility has developed false color Red, Green, Blue (RGB) and Radiometrically Terrain-Correct (RTC) composites and surface water extent products of the Sentinel-1A/B Synthetic Aperture Radar (SAR) instrument which assigns the co- and cross-polarization information to a channel in the composite. When used to support a flooding event, areas in blue denotes water present at the time of the satellite overpass before or after the start of the flooding event.Sentinel-1 RGB Decomposition of RTC VV and VH imagery over United States coastlines. Blue areas have low returns in VV and VH (smooth surfaces such as calm water, but also frozen/crusted soil or dry sand), Green areas have high returns in VH (volume scatterers such as vegetation or some types of snow/ice), and Red areas have relatively high VV returns and relatively low VH returns (such as urban or sparsely vegetated areas).Suggested Use:In the RGB images, water appears in blue, vegetated areas in shades of green and urban areas in bright orange. It is recommended to use this product with ancillary information to derive flooded areas.In the Water Extent images, data is classified from the above imagery shows water, including flooded areas, as blue.Satellite/Sensor:Synthetic Aperture Radar on European Space Agency's (ESA) Copernicus Sentinel-1A satelliteResolution:20 metersEsri REST Endpoint:See URL on the right.WMS Endpoint:https://maps.disasters.nasa.gov/ags04/services/tropical_storm_sara_202411/sentinel1/MapServer/WMSServerData Download:https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/tropical_storm_sara_202411/sentinel1/

Service Item Id: f2a729500b9744709861f28f9eb4963b

Copyright Text: NASA/MSFC, USGS, ESA Copernicus. Sentinel data used in this derived product, contains modified Copernicus Sentinel data (2019-2022), processed by ESA, Alaska Satellite Facility.

Spatial Reference: 32616 (32616)

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