Using the Harmonized Landsat Sentinel-2 Product for Tracking Gypsy Moth Defoliation in New England

Authors: Tyler Anderson*, Clark University
Topics: Remote Sensing, Natural Resources, Land Use and Land Cover Change
Keywords: Harmonized, Landsat, Sentinel-2, Gypsy Moth, invasive, CCDC
Session Type: Poster
Presentation File: No File Uploaded


The invasive gypsy moth (Lymantria dispar L.), once a great issue in the Northeast, has been controlled through the introduction of natural control agents. Since 2015, the gypsy moth population has begun another outbreak, causing widespread defoliation in southern New England as well as tree mortality due to stress. Satellite remote sensing has long been used to assess the impact of events on landscapes, such as insect outbreaks. Satellite sensors with the appropriate geometric, radiometric, and temporal resolution is needed to effectively track an insect outbreak such as gypsy moth across a landscape. With the availability of new sensor fusion products, such as NASA’s Harmonized Landsat Sentinel-2 (HLS) project, the ability to analyze insect outbreaks from a temporal series of images has improved. Using new methodologies to such as CCDC and HLS, we can track changes in gypsy moth defoliation in New England and take advantage of the dense image stack that HLS data provides. The end goal of this research is to evaluate the use of HLS data for tracking insect defoliation in southern New England in near-real time and provide insights into the recent damage the gypsy moth has done.

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