Displaying 41 - 50 of 50
The satellite imagery is a Sentinel-1 Ground Range Detection C-SAR image from July 2nd, 2021, taken over the Sudd Wetland located in South Sudan. The image shows the 'VV' backscatter values, which correlate to vertical transmission and vertical reception from the C-SAR instrument and are used to classify wetland inundation extent. Low 'VV' values (blue) represent areas covered by open waters & inundated land areas and high 'VV' values (yellow) represent dry land areas.

A Google Earth Engine Python API Tool to Automate Wetland Extent Mapping Using Radar Satellite Sensor for Wetland Management and Monitoring

Topic
DEVELOP
Water Resources
WET Water Resources (2023 Spring) Team: Lori Berberian (Project Lead), Kaely Harris, Mitch Porter, Emma Waugh Summary: Wetland ecosystems are annually or seasonally wet transition...
Normalized Difference Snow Index (NDSI) processed image using Landsat 8 OLI data from January 2022 and SUOMI-NPP VIIRS snow cover data from January 2019, overlaid on a Landsat 8 RGB image, colorized purple. NSDI is shown in yellow-orange-red and SUOMI-NPP VIIRS is depicted in shades of blue. Snow cover data was used to identify melt events causing high turbidity in Wyoming’s Shoshone River basin. PlanetScope-derived turbidity (May 2019) also highlights the river in green.

Quantifying Sediment Input in the Shoshone River in Wyoming using the Soil and Water Assessment Tool for Enhanced Water Quality Monitoring

Topic
DEVELOP
Water Resources
Shoshone River Water Resources II (2023 Spring) Team: Robyn Holmes (Project Lead), Christian Bitzas, Jillian Greene, Isabella St. John Summary: The Willwood Dam, an irrigation...
Color composite image portraying Wupatki Basin in northwestern Arizona, derived from 2021 LANDSAT 8 OLI/TIRS imagery. This image depicts Pinyon-Juniper Woodlands (PJW), among other vegetation, between the river and mountains in a light green color. Thermal Infrared (TIR) occupies the red band, while the green and blue bands represent the Modified Normalized Difference Water Index (MNDWI) and the Modified Soil-Adjusted Vegetation Index (MSAVI), respectively. The reduced correlation between bands in this comp

Utilizing NASA Earth Observations and Aerial Imagery to Assess Pinyon-Juniper Tree Mortality in Flagstaff, AZ

Topic
DEVELOP
Capacity Building
Water Resources
Arizona Water Resources II (Fall 2022) Team: Arina Morozova (Project Lead), Jamal Jeffer, Jessica Birk, Greg Peargin Summary: Pinyon-juniper woodlands (PJW) provide critical and resilient...
Sophie Krautmann smiles, wearing her grey National Park Ranger buttoned shirt and brown hat. She stands in a high place with the red rock formations visible in the canyon behind her.
DEVELOP
Wildfires
Climate
Capacity Building
Ecological Conservation
Health & Air Quality
Water Resources

Getting Satellite Data into the Hands of Park Rangers

By
ACOLITE and NDVI processed imagery from Landsat 9 OLI-2 data. This composite image of the Coos Estuary and surrounding area was taken in September of 2022 after a period of increased precipitation. Shades of blue indicate vegetated land surface. The darker purple indicates higher turbidity while the lighter orange indicates lower turbidity. 

Monitoring Changes in Water Quality to Identify Stressors in Eelgrass Extent Throughout the Coos Estuary

Topic
DEVELOP
Water Resources
South Slough Water Resources (Summer 2023) Team: Maya Hall (Project Lead), Gabriel Halaweh, Sean McCollum, Zoë Siman-Tov Summary: The Coos estuary in Southern Oregon supports...

Can remote data connect us to the land? A landscape analysis for braiding satellite-based information and Indigenous knowledge in California

Topic
Applied Sciences
Wildfires
Equity and Environmental Justice
Capacity Building
Water Resources
This project explores the potential of Remote Sensing (RS) and spatial data to advance Environmental Justice, with a focus on tribal land and water resources...
Chlorophyll-a imagery from Aqua MODIS for March 2022 in the Gulf of Maine. Simulated PACE OCI data are derived from Aqua MODIS. Areas in red have a high chlorophyll-a concentration, meaning that the water is high in nutrients such as nitrogen and phosphorus, which cause algae to grow. Areas in blue have a low chlorophyll-a concentration, so the conditions are not present for harmful algal blooms.

Demonstrating the Use of NASA’s PACE Hyperspectral Ocean Color Instrument Data for Enhanced Coastal Management

Topic
DEVELOP
Water Resources
PACE Water Resources (Summer 2023) Team: Jules Kourelakos, Isabel Lubitz, Matt Romm, Grace Thorpe Summary: This project aimed to develop tools to support the future...
NDVI-processed imagery from Landsat 8 OLI/TIRS data. This composite image of Washington, D.C., and the surrounding area representing max green values over the summer months of 2022. Blue shades in the image represent vegetated areas, while green and yellow shades represent water and areas with no vegetation. Plant cover has a major impact on water quality, making it crucial for the National Park Service to understand the state of vegetation in this region.

Assessing Water Quality and Quantity in the National Capital Region using NASA Earth Observations

Topic
DEVELOP
Water Resources
Potomac River Basin Water Resources (Summer 2023) Team: Zach Kinloch, Divina Lade, Xavier García López, Haydee Portillo Summary: The Potomac River Basin (PRB) is responsible...
Lake Anna NDCI calculated using Sentinel-2 MSI images overlaying surface temperature imagery processed from Landsat 8 OLI data from May to September of 2021. Surface temperature is represented by shades of blue and green. Within the body of the lake, chlorophyll concentrations are represented on a gradient scale from purple to yellow, with yellow indicating highest concentrations. Higher temperatures can increase chlorophyll concentrations and are therefore of interest for Harmful Algal Blooms in Lake Anna.

Using NASA Earth Observations to Identify Algal Event Risk Factors in Lake Anna and Help Inform Future Management Practices

Topic
DEVELOP
Water Resources
Lake Anna Water Resources (Summer 2023) Team: Olivia Etherton (Project Lead), Caroline Bahun, Alexander Krest, Justin Wilder Summary: Lake Anna is a man-made reservoir and...
Normalized difference vegetation index (NDVI) calculated from Landsat 8 OLI showing land and aquatic vegetation around the Kankakee River in northeast Illinois on June 9, 2022. For land, dark blue represents high vegetation while light blue represents low vegetation. For water, light orange represents lack of aquatic vegetation, while purple represents the presence of aquatic vegetation. The image shows where along the Kankakee River aquatic vegetation exists.

Monitoring Temperature and Vegetation to Detect River Flow Impediments at Energy Intake Structures

Topic
DEVELOP
Water Resources
Kankakee Water Resources (Summer 2023) Team: Marisa Smedsrud (Project Lead); Hayden Hoffmeister; Oluwatosin Orimolade; Barira Rashid Summary: In recent years, unpredictable grassing events have occurred...

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