Principal Investigator

Rebecca Lehman

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Using NASA Earth Observations to Monitor Land-use Change and Map At-risk Coastal Habitats in the U.S. Virgin Islands

The United States Virgin Islands (USVI) are home to an array of diverse and stunning habitats. The beauty of the islands has continued to attract visitors and residents, which overtime has increased human development and impact. The resulting land-use change increases sediment loads and the...

Principal Investigator

Eric Jensen

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Slopes of post-fire median NDVI recovery derived from post-fire annual composites between 2002 and 2019 of harmonized Landsat 5 TM, 7 ETM, and 8 OLI satellites for the historic Hayman Fire that burned more than 130,000 acres of Colorado’s Front Range forest is pictured here. NDVI in burned areas that are recovering relatively quickly, moderately and slowly are shown in dark blue, green, and yellow, respectively.   Keywords: remote sensing, Landsat 8 OLI, Landsat 7 ETM, Landsat 5 TM, wildfire, vegetation recovery, Random Forest​

Forest composition and structure in the Colorado Front Range has been altered by changing wildfire regimes. In particular, increased moderate- and high-severity fire significantly reduces forest cover following fire and often results in reduced seedling regeneration. Reduced tree canopy regrowth...

Principal Investigator

Amanda Aragón

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Using NASA Earth Observations to Monitor Vulnerability, Wildfire Damage, and Recovery in the Appalachian Forests

Wildfires in the southeastern US are understood less than those in other portions of the nation. In October and November 2016, over sixty individual wildfires ignited among seven states in the Southern Appalachian region. These fires damaged hundreds of buildings, caused numerous power outages, and...

Principal Investigator

Amanda Aragón

 
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Using NASA Earth Observations to Monitor Vulnerability, Wildfire Damage, and Recovery in the Appalachian Forests

Wildfires in the southeastern US are less understood compared to other portions of the nation. In October and November of 2016, over 60 individual wildfires ignited among seven states in the Southern Appalachian region. These fires damaged hundreds of buildings, caused numerous power outages...

Principal Investigator

Dionne Blanks

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Using NASA Earth Observations to Obtain Water Quality Trends in the Mobile Bay and Mississippi Sound to Enhance Future Oyster Habitat Suitability and Fisheries Management

The Mobile Bay and Mississippi Sound region comprise the majority of the coastal estuaries along the Alabama and Mississippi Gulf Coast. These bodies of water provide the salinity conditions needed to sustain diverse wildlife species and coastal habitats. Changes in water quality parameters directly impact...

Principal Investigator

W. Patrick Frier

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Using NASA Earth Observations to Prioritize Locations for the Further Monitoring and Management of Cultural Resources in Glen Canyon National Recreation Area

Glen Canyon National Recreation Area (NRA) contains a diverse suite of culturally and historically significant archaeological sites that are threatened by erosion and changing land cover dynamics. The National Park Service (NPS) is tasked with monitoring, studying, and preserving these archeological sites, many of which...

Principal Investigator

Darcy Gray

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2018 summer median Land Surface Temperature (LST) derived from Landsat 8 Raw Scenes using Google Earth Engine. A section of Asheville is displayed. Red indicates areas with higher LST, and blue represents lower LST. Visualizing which communities are most vulnerable to urban heat allows the Asheville Urban Forestry Commission to make decisions about tree planting and preservation. Displayed over the LST are US census parcels outlines, available from http://us-city.census.okfn.org/dataset/parcels.  Keywords: urban heat, land surface temperature, landsat, census data

Asheville, North Carolina has had a population growth of approximately 10 percent over the past decade, while the city’s tree canopy cover has simultaneously decreased by 6.4 percent. A well-known benefit of urban tree cover is the mitigation of the...

Principal Investigator

Sophia Leiker

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Using NASA Earth Observations to Quantify Tree Mortality and Burn Severity to Inform Management on Ranches and Open Lands

Both wildfires and conifer-defoliating insect outbreaks have increased in frequency and severity in recent years. Western spruce budworm (Choristoneura freemani), a widespread defoliator in western U.S. forests, has impacted over 6,000 hectares of forest in southern Colorado. The forest managers for southern Colorado’s Tercio and...

Principal Investigator

Margaret McCall

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Daytime average land surface temperatures calculated from April-September, 2015 – 2020 Landsat 8 TIRS data. The image shows downtown Austin, Texas, the surrounding Hill Country, and Lake Travis. Red and yellow values represent highest temperatures, while blue and white values depict cooler areas, including the Colorado River system that runs through the city. Yellow areas highlight built-up features associated with higher temperatures, suggesting where partners should focus their efforts on mitigating heat hazards for vulnerable communities.  Keywords: Urban Heat, Land Surface Temperature, Landsat8, Alexa Lopez, Will Peters, Margaret McCall, James Sanders

In recent years, Austin, Texas has experienced an increase in population and urban development. Additionally, the City’s climate continues to change and currently faces extreme heat and drought. As temperatures and demand for utilities and resources rise, the number of...

Principal Investigator

Scott Cunningham

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A model-produced feasibility map of aspen regeneration after the Spring Creek wildfire in 2018, (extent shown in red). This was overlaid on an NDVI-composite produced from Landsat 8 OLI Tier 1 surface reflectance (September 2019)(shown in shades of blue) of Trinchera Ranch in Southern Colorado. The model was trained on data from Landsat 8 OLI/TIRS, Sentinel-2 MSI, and SRTM from the Summer of 2017 and 2019 (before and after the fire, respectively). Areas most suitable for aspen regeneration after the disturbance are in yellow.   Keywords: Aspen, Wildfire, NDVI, Random Forest, Spring Creek, La Veta, Colorado, Landsat, Sentinel

Quaking aspen (Populus tremuloides) is an important species for wildlife, watershed health, and ecosystem resilience across its range. Heavy ungulate browsing and factors influenced by a changing climate including seasonal temperature changes and moisture deficit have led to...