| snippet:
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NDVI and Binary NDVI Change for the Flooding in Texas, July 2025 |
| summary:
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NDVI and Binary NDVI Change for the Flooding in Texas, July 2025 |
| extent:
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[[-99.9478399256554,29.5821193921369],[-96.7110976896765,31.057569346789]] |
| accessInformation:
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NASA Disasters Program, NASA Marshall Space Flight Center (MSFC). PlanetScope: Includes copyrighted material of Planet Labs PBC. All rights reserved. |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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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 Image(s):</SPAN></P><P><SPAN>Post-Event: July 8,2025; July 9, 2025; July 10, 2025; July 31, 2025; August 3, 2025</SPAN></P><P><SPAN>Pre-Event: June 2, 2025; June 16, 2025; June 17, 2025</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>Normalized Differential Vegetation Index (NDVI) maps are produced by converting pixel values to NDVI = (Red – NIR)/(Red + NIR), NIR indicates the near infrared band. The dynamically generated Normalized Difference Vegetation Index (NDVI) layer is an index for quantifying green vegetation. It reflects the state of vegetation health based on how vegetation reflects light at certain wavelengths.</SPAN></P><P><SPAN>NDVI change was created by subtracting the cloud-masked post-event NDVI from the cloud-masked pre-event NDVI to show areas of potentially impacted vegetation as negative values (darker shades) and healthy/unimpacted vegetation in positive values (lighter shades). NDVI change can give insights to impacts from an event (like the scouring of vegetation from the riverbeds) but can also show changes in unrelated areas like the clearing of agriculture fields.</SPAN></P><P><SPAN>This layer is a binary NDVI change polygon (threshold of areas where NDVI decreased by -0.25 or more) for July 8 and 9 as compared to Pre-event imagery on June 17.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Suggested Use:</SPAN></P><P><SPAN>NDVI: Dark green colors are areas with a lot of green leaf growth which indicates the presence of chlorophyll. Chlorophyll reflects more infrared light and less visible light. Areas with some green leaf growth are in light greens, and areas with little to no vegetation growth are even lighter greens.</SPAN></P><P><SPAN>NDVI change: Commonly used to distinguish healthy/active vegetation (positive values) from potentially unhealthy/impacted vegetation (negative values).</SPAN></P><P><SPAN>Gaps in the dataset indicate clouds in the Planet imagery used to create this product.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Satellite/Sensor:</SPAN></P><P><SPAN>PlanetScope. This product includes copyrighted material of Planet Labs PBC. All rights reserved.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Resolution:</SPAN></P><P><SPAN>3 meters</SPAN></P><P><SPAN STYLE="font-weight:bold;">Credits:</SPAN></P><P><SPAN>NASA Disasters Program, NASA Marshall Space Flight Center (MSFC). PlanetScope: Includes copyrighted material of Planet Labs PBC. All rights reserved.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Esri REST Endpoint:</SPAN></P><P><SPAN>See URL section on right side of page</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">WMS Endpoint:</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Data Download:</SPAN></P></DIV></DIV></DIV> |
| licenseInfo:
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<DIV STYLE="text-align:Left;"><DIV><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.</SPAN></P><P><SPAN>Use of this product should include: "Includes copyrighted material of Planet Labs PBC. All rights reserved.</SPAN></P></DIV></DIV></DIV> |
| catalogPath:
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|
| title:
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Binary NDVI Change [pre-event (6/17/2025), post-event (7/8/2025, 7/9/2025, & 7/10/2025)] for the Flooding in Texas, July 2025 |
| type:
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Map Service |
| url:
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|
| tags:
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["NDVI","change","flood","floods","flooding","NASA","NASA Disasters Program","NASA Disasters Response Coordination System","Texas","Planet"] |
| culture:
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en-US |
| name:
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planet_binaryNDVI |
| guid:
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4546157D-9ACF-4A47-B979-9859D99BE673 |
| minScale:
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0 |
| spatialReference:
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GCS_WGS_1984 |