| snippet:
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ARIA Damage Proxy Map (UAVSAR) for the California Fires 2020 |
| summary:
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ARIA Damage Proxy Map (UAVSAR) for the California Fires 2020 |
| extent:
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[[-123.434874,37.8067465],[-121.38182873548,39.228638]] |
| accessInformation:
|
NASA-JPL/Caltech ARIA team |
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true |
| thumbnail:
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thumbnail/thumbnail.png |
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"] |
| description:
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<div style='text-align:Left;'><div><div><p><span style='font-weight:bold;'>Date of Images:</span></p><p><span>9/2/2020</span></p><p><span style='font-weight:bold;'>Date of Next Image: </span></p><p><span>Unknown</span></p><p><span style='font-weight:bold;'>Summary:</span></p><p><span>The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, created this Damage Proxy Map (DPM) depicting areas of Northern California that are likely damaged (shown by red and yellow pixels) as a result of the recent wildfires. The map is derived from a stack of synthetic aperture radar (SAR) amplitude images (in HV polarization) acquired by JPL's UAVSAR sensor. The pre-event images were taken up to October 3, 2018 and the post-event image was acquired during the fire (September 3, 2020). Since the time span of the before and after images is long, this map can contain other changes occurred between the two dates, potentially due to previous fires or post-fire vegetation growth if any (e.g. areas affected by the 2017 Atlas Fire).</span></p><p><span>The color variation from yellow to red indicates increasingly more significant ground surface change. Preliminary validation was done by comparing to the Approximate fire location by the Copernicus Sentinel-2 optical imagery. </span></p><p><span style='font-weight:bold;'>Suggested Use:</span></p><p><span>The color variation from yellow to red indicates increasingly more significant ground surface change. This damage proxy map should be used as guidance to identify damaged areas, and may be less reliable over vegetated areas including farmlands. For example, the scattered single colored pixels over vegetated areas may be false positives, and the lack of colored pixels over vegetated areas does not necessarily mean no damage. </span></p><p><span>Note: These DPMs should be combined with known fire perimeters to ensure areas of change are due to the 2020 fires.</span></p><p><span style='font-weight:bold;'>Satellite/Sensor:</span></p><p><span>UAVSAR airborne L-band synthetic aperture radar (SAR) aboard a NASA Gulfstream C-20A jet. </span></p><p><span style='font-weight:bold;'>Resolution:</span></p><p><span>30 meters</span></p><p><span style='font-weight:bold;'>Credits:</span></p><p><span>Analyzed by the NASA-JPL/Caltech ARIA team. This research was carried out at JPL funded by NASA Earth Applied Sciences Disasters Program.</span></p><p><span /></p></div></div></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.</span></p></div></div> |
| catalogPath:
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|
| title:
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Map |
| type:
|
Map Service |
| url:
|
|
| tags:
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["NASA","NASA Disasters Program","ARIA","UAVSAR","Fire","Wildfire","LNU Lightning Complex"] |
| culture:
|
en-US |
| name:
|
aria_dpm_ca_fires_202008 |
| guid:
|
36369F99-6919-4731-8846-46C7D2EC4D7B |
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0 |
| spatialReference:
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GCS_WGS_1984 |