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  3. Fall Colors in Ridge-and-Valley Appalachians

Fall Colors in Ridge-and-Valley Appalachians

Image captured on 9 November 2021 by the MSI instrument aboard ESA's Sentinel 2A and 2B satellites.

True-color corrected reflectance images of the Ridge-and-Valley Appalachians in Maryland, Virginia and West Virginia. This comparison image compares imagery from 26 August 2021 on the left "A" side with imagery from 9 November 2021 on the right "B" side. Move the center swipe line back and forth to see the difference between the vegetation in the summer and autumn. The summer time vegetation is mostly green whilst the right side shows the ridges and mountains are covered in senescing trees, with leaves changing to red and brown.

This image was acquired by the Multi-Spectral Instrument (MSI), aboard the European Space Agency Sentinel-2A and -2B satellites. It is available in NASA's Worldview as a part of the Harmonized Landsat Sentinel-2 (HLS) project which provides 30 meter resolution true color surface reflectance imagery from the Operational Land Imager (OLI) instrument aboard Landsat 8, and the Multi-Spectral Instrument (MSI) aboard the European Space Agency Sentinel-2A and -2B satellites. The data from the two instruments aboard the three satellites are processed through a set of algorithms to make the imagery consistent and comparable across the instruments. This includes atmospheric correction, cloud and cloud-shadow masking, spatial co-registration and common gridding, illumination and view angle normalization, and spectral bandpass adjustment.

Visit Worldview to visualize near real-time imagery from NASA's EOSDIS, and check out more Worldview weekly images in our archive.

Dataset doi:10.5067/HLS/HLSS30.002

Page Last Updated: Nov 22, 2021 at 1:32 PM EST