NCSU

Megan Coffer

About

Projects

Publications

Awards and Recognition

CV

First-author publications

Vertical artifacts in high-resolution WorldView-2 and WorldView-3 satellite imagery of aquatic systems.

Coffer, M., Whitman, P., Schaeffer, Hill, V., Zimmerman, R., Salls, W., Lebrasse, M. & Graybill, D. (2022). Vertical artifacts in high-resolution WorldView-2 and WorldView-3 satellite imagery of aquatic systems. International Journal of Remote Sensing. DOI: 10.1080/01431161.2022.2030069.

Assessing cyanobacterial frequency and abundance at surface waters near drinking water intakes across the United States.

Coffer, M., Schaeffer, B., Foreman, K., Porteous, A., Loftin, K., Stumpf, R., Werdell, J., Urquhart, E., Albert, R. & Darling, J. (2021). Assessing cyanobacterial frequency and abundance at surface waters near drinking water intakes across the United States. Water Research. DOI: 10.1016/j.watres.2021.117377.

Satellite remote sensing to assess cyanobacterial bloom frequency across the United States at multiple spatial scales.

Coffer, M., Schaeffer, B., Salls, W., Urquhart, E., Loftin, K., Stumpf, R., Werdell, J., & Darling, J. (2021). Satellite remote sensing to assess cyanobacterial bloom frequency across the United States at multiple spatial scales. Ecological Indicators. DOI: 10.1016/j.ecolind.2021.107822.

Performance across WorldView-2 and RapidEye for reproducible seagrass mapping.

Coffer, M., Schaeffer, B., Zimmerman, R., Hill, V., Li, J., Islam, K. & Whitman, P. (2020). Performance across WorldView-2 and RapidEye for reproducible seagrass mapping. Remote Sensing of Environment. DOI: 10.1016/j.rse.2020.112036.

Balancing privacy rights and the production of high-quality satellite imagery

Coffer, M. (2020). Balancing privacy rights and the production of high-quality satellite imagery. Environmental Science & Technology. 54 (11), 6453-6455. DOI: 10.1021/acs.est.0c02365.

Quantifying national and regional cyanobacterial occurrence in US lakes using satellite remote sensing

Coffer, M., Schaeffer, B., Darling, J., Urquhart, E., & Salls, W. (2020). Quantifying national and regional cyanobacterial occurrence in US lakes using satellite remote sensing. Ecological Indicators. 111. DOI: 10.1016/j.ecolind.2019.105976.

Coffer, M. & Hestir, E. (2019). Variability in trends and indicators of CO2 Exchange across Arctic wetlands. Journal of Geophysical Research: Biogeosciences, 124, 1248-1264. https://doi.org/10.1029/2018JG004775.

A method for quantifying the number of U.S. lakes with cyanobacterial harmful algal blooms using satellite remote sensing

Coffer, M., Schaeffer, B., Uruqhart, E., Darling, J. & Salls, W. (2018) A method for quantifying the number of U.S. lakes with cyanobacterial harmful algal blooms using satellite remote sensing. Proc. SPIE 10767, Remote Sensing and Modeling of Ecosystems for Sustainability XV, 1076709. doi:10.1117/12.2319669.

Providing a management framework for seagrass mapping in United States coastal ecosystems using high spatial resolution satellite imagery

Coffer, M., Graybill, D., Whitman, P., Schaeffer, B., Salls, W., Zimmerman, R., Hill, V., Lebrasse, M., Li, J., Islam, K., & Keith, D. (In preparation). Providing a management framework for seagrass mapping in United States coastal ecosystems using high spatial resolution satellite imagery. Journal of Environmental Management.

Algae surveillance and quantification through remote sensing

Coffer, M., Ogashawara, I., Schaeffer, B., Malthus, T. & Anstee, J. (In preparation). “Algae Surveillance and Quantification through Remote Sensing.” M57 Algae: Source to Treatment.

Co-author publications

Temporal Stability of Seagrass Extent, Leaf Area, and Carbon Storage in St. Joseph Bay, Florida: a Semi-automated Remote Sensing Analysis

Lebrasse, M., Schaeffer, B., Coffer, M., Whitman, P., Zimmerman, R., Hill, V., Islam, K., Li, J. & Osburn, C. (2022). Temporal Stability of Seagrass Extent, Leaf Area, and Carbon Storage in St. Joseph Bay, Florida: a Semi-automated Remote Sensing Analysis. Estuaries and Coasts. DOI: 10.1007/s12237-022-01050-4.

Merging of the Case 2 Regional Coast Colour and Maximum-Peak Height chlorophyll-a algorithms: validation and demonstration of satellite-derived retrievals across US lakes

Schaeffer, B., Salls, W., Coffer, M., Lebreton, C., Werther, M., Stelzer, K., Urquhart, E. & Gurlin, D. (2022). Merging of the Case 2 Regional Coast Colour and Maximum-Peak Height chlorophyll-a algorithms: validation and demonstration of satellite-derived retrievals across US lakes. Environmental Monitoring and Assessment. DOI: 10.1007/s10661-021-09684-w.

Acute health effects associated with satellite-determined cyanobacterial blooms in a drinking water source in Massachusetts

Wu, J., Hilborn, E., Schaeffer, B., Urquhart, E., Coffer, M., Lin, C. & Egorov, A. (2021). Acute health effects associated with satellite-determined cyanobacterial blooms in a drinking water source in Massachusetts. Environmental Health. DOI: 10.1186/s12940-021-00755-6.

A Review of Geospatial Content in IEEE Visualization Publications

Yoshizumi, A., Coffer, M., Collins, E., Gaines, M., Gao, X., Jones, K., McGregor, I., McQuillan, K., Perin, V., Tomkins, L. & Worm, T. (2020). A Review of Geospatial Content in IEEE Visualization Publications. IEEE Visualizations. URL: arXiv:2009.03390.

A validation of satellite derived cyanobacteria detections with state reported events and recreation advisories across U.S. lakes

Whitman, P., Schaeffer, B., Salls, W., Coffer, M., Mishra, S., Seegers, B., Loftin, K., Stumpf, R. & Werdell, J. (In press). A validation of satellite derived cyanobacteria detections with state reported events and recreation advisories across U.S. lakes. Harmful Alage. DOI: 10.1016/j.hal.2022.102191.

Simulated response of St. Joseph Bay, FL seagrass meadows and blue carbon to anthropogenic and climate impacts

Lebrasse, M., Schaeffer, B., Zimmerman, R., Hill, V., Coffer, M., Whitman, P., Salls, W., Graybill, D. & Osburn, C. (In review). Simulated response of St. Joseph Bay, FL seagrass meadows and blue carbon to anthropogenic and climate impacts. Marine Environmental Research.

Potential for commercial PlanetScope satellites in oil response monitoring

Schaeffer, B., Whitman, P., Conmy, R., Salls, W., Coffer, M., Graybill, D. & Lebrasse, M. (In review). Potential for commercial PlanetScope satellites in oil response monitoring. Marine Pollution Bulletin.

Satellites quantify the spatial extent of cyanobacterial blooms across the United States at multiple scales

Schaeffer, B., Urquhart, E., Coffer, M., Salls, W., Stumpf, R., Loftin, K. & Werdell, P. (In review). Satellites quantify the spatial extent of cyanobacterial blooms across the United States at multiple scales. Ecological Indicators.

Assessment of dissolved organic carbon flux in a North Carolina tidal marsh

Lebrasse, M. Schaeffer, B., Bohnenstiehl, D., Osburn, C., He, R., Coffer, M., Whitman, P., Salls, W., & Graybill, D. (In preparation). Assessment of dissolved organic carbon flux in a North Carolina tidal marsh. Earth Science Reviews.

Satellite monitoring of chlorophyll in U.S. lakes: a national-scale validation of the Sentinel-2 Maximum Chlorophyll Index

Salls, W., Schaeffer, B., Pahlevan, N., Keith, D., Binding, C., Stumpf, R., Seegers, B., Werdell, P., Coffer, M. & Whitman, P. (In preparation). Satellite monitoring of chlorophyll in U.S. lakes: a national-scale validation of the Sentinel-2 Maximum Chlorophyll Index. Environmental Monitoring and Assessment.

Presentations

Exploring Satellite Image Integration for the Chesapeake Bay Submerged Aquatic Vegetation Monitoring Program 2019: Mapping seagrass with WorldView-2 and RapidEye. Invited speaker.

Seagrasses & Neural Networks Workshop at NASA Ames 2019: Processing commercial satellite imagery for water quality applications. Invited speaker.

NASA Headquarters Applied Sciences Program 2019: Green stuff from space!

U.S. EPA Office of Water 2019: An update on CyAN cyanobacterial metrics and drinking water applications

SPIE 2018: A Method for Quantifying the Number of U.S. Lakes with Cyanobacterial Harmful Algal Blooms using Satellite Remote Sensing

Stormwater Conference 2018: Using Satellite Data to Monitor the Impacts of CyanoHAB Events on Drinking Water: A Texas Case Study

Posters

NC State College of Natural Resources Graduate Research Symposium 2021: Eyes in the sky support seagrass mapping in coastal environments. 1st place winner

CERF 2019: Monitoring algal blooms using high-spatial resolution satellite imagery.

14th Annual NC State University Graduate Student Symposium 2019: Assessing the frequency of cyanobacterial blooms in waterbodies across the United States. 3rd place winner

AGU 2018: Assessing the Impact of Cyanobacterial Harmful Algal Blooms on Drinking Water Intakes Across the United States.

NC GIS Conference: Evaluating the Carbon Balance of Arctic Wetalnds: A Synthesis.

AGU 2016: Developing Indicators of CO2 Flux from Arctic Wetlands.

Graduate Climate Conference: Trends of CO2 Flux in Arctic Wetlands.

NASA HyspIRI: Determining the Optimal view Angle for Hyperspectral-based Estimates of Wetland Plant Biomass

AMS 2015: Radar Observations of Storms for Education.