| snippet:
|
Sentinel-1 Water Extent and RGB for Tropical Storm Ernesto in August 2024. |
| summary:
|
Sentinel-1 Water Extent and RGB for Tropical Storm Ernesto in August 2024. |
| extent:
|
[[-68.9011589083773,16.979961088796],[-62.105159068854,20.0450813600681]] |
| accessInformation:
|
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. |
| thumbnail:
|
thumbnail/thumbnail.png |
| maxScale:
|
1.7976931348623157E308 |
| typeKeywords:
|
["Data","Service","Map Service","ArcGIS Server"] |
| description:
|
<div style='text-align:Left;'><p><span>Dates of Images:</span></p><p><span>Pre-Event: 7/5, 7/10, 7/12, 7/15, 7/17, 7/24, 7/29, 8/5</span></p><p><span>Post-Event: 8/10, 8/15</span></p><p><span style='font-weight:bold;'>Date of Next Image:</span></p><p><span>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.</span></p><p><span style='font-weight:bold;'>Summary:</span></p><p><span>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.</span></p><p><span>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).</span></p><p><span style='font-weight:bold;'>Suggested Use:</span></p><p><span>In this image, 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.</span></p><p><span style='font-weight:bold;'>Satellite/Sensor:</span></p><p><span>Synthetic Aperture Radar on European Space Agency's (ESA) Copernicus Sentinel-1A/B satellite</span></p><p><span>NOTE: Sentinel-1B is no longer acquiring data and is only available into December 2021</span></p><p><span style='font-weight:bold;'>Resolution:</span></p><p><span>20 meters</span></p><p><span>Esri REST Endpoint:</span></p><p><span>See URL on the right.</span></p><p><span>RGB Product:</span></p><p><a href='https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_RGB/ImageServer' rel='nofollow ugc' target='_blank'>https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_RGB/ImageServer</a><br /></p><p><span>RTC Product:</span></p><p><span>VV - </span><a href='https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_RTC_VV/ImageServer' rel='nofollow ugc' target='_blank'>https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_RTC_VV/ImageServer</a></p><p><span>VH - </span><a href='https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_RTC_VH/ImageServer' rel='nofollow ugc' target='_blank'>https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_RTC_VH/ImageServer</a></p><p><span>Surface Water Extent Product:</span></p><p><a href='https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_WM/ImageServer' rel='nofollow ugc' target='_blank'>https://gis.asf.alaska.edu/arcgis/rest/services/ASF_S1/ASF_S1_WM/ImageServer</a></p><p><span style='font-weight:bold;'>WMS:</span><br /></p><p><a href='https://maps.disasters.nasa.gov/ags04/services/tropicalstorm_ernesto_2024/Sentinel1_WaterExtent_RGB/MapServer/WMSServer' rel='nofollow ugc' target='_blank'>https://maps.disasters.nasa.gov/ags04/services/tropicalstorm_ernesto_2024/Sentinel1_WaterExtent_RGB/MapServer/WMSServer</a></p><p><span style='font-weight:bold;'>Data Download:</span><br /></p><p><a href='https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/tropical_storm_ernesto_202408/sentinel1/' rel='nofollow ugc' target='_blank'>https://maps.disasters.nasa.gov/download/gis_products/event_specific/2024/tropical_storm_ernesto_202408/sentinel1/</a><span><br /></span></p></div> |
| licenseInfo:
|
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>NASA data and products are freely available to federal, state, public, non-profit and commercial users. This information can be experimental- or research-grade data products and may not be appropriate for operational use. These NASA data products, services, and the Disasters Mapping Portal are intended to aid decision makers and enhance situational awareness, but these data are not guaranteed to be consistently available or routinely updated. Please cite the information according to the direction provided in the metadata. Use of this product should include: "Contains modified Copernicus Sentinel data (2019-2024) processed by ESA"</SPAN></P></DIV></DIV> |
| catalogPath:
|
|
| title:
|
Sentinel-1 Water Extent and RGB for Tropical Storm Ernesto in August 2024 |
| type:
|
Map Service |
| url:
|
|
| tags:
|
["2024","NASA Disasters Program","NASA","Flood","Floods","Flooding","Landslides","Copernicus","Sentinel-1","Hurricanes","Tropical Cyclone","Ernesto","Puerto Rico"] |
| culture:
|
en-US |
| name:
|
Sentinel1_WaterExtent_RGB |
| guid:
|
7A3925D2-D110-42F3-BD91-BEAAECDB6601 |
| minScale:
|
0 |
| spatialReference:
|
WGS_1984_UTM_Zone_20N |