Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3390/s17081855
Titel (primär) Validating MODIS and Sentinel-2 NDVI products at a temperate deciduous forest site using two independent ground-based sensors
Autor Lange, M.; Dechant, B.; Rebmann, C.; Vohland, M.; Cuntz, M.; Doktor, D.
Quelle Sensors
Erscheinungsjahr 2017
Department CLE; CHS
Band/Volume 17
Heft 8
Seite von art. 1855
Sprache englisch
Supplements https://e4ftl01.cr.usgs.gov/MOLA/
https://e4ftl01.cr.usgs.gov/MOLT/
Keywords sensor; hyperspectral; multispectral; validation; site; automatic; measurements; vegetation; MODIS; Sentinel-2; phenology
UFZ Querschnittsthemen RU1
Abstract Quantifying the accuracy of remote sensing products is a timely endeavor given the rapid increase in Earth observation missions. A validation site for Sentinel-2 products was hence established in central Germany. Automatic multispectral and hyperspectral sensor systems were installed in parallel with an existing eddy covariance flux tower, providing spectral information of the vegetation present at high temporal resolution. Normalized Difference Vegetation Index (NDVI) values from ground-based hyperspectral and multispectral sensors were compared with NDVI products derived from Sentinel-2A and Moderate-resolution Imaging Spectroradiometer (MODIS). The influence of different spatial and temporal resolutions was assessed. High correlations and similar phenological patterns between in situ and satellite-based NDVI time series demonstrated the reliability of satellite-based phenological metrics. Sentinel-2-derived metrics showed better agreement with in situ measurements than MODIS-derived metrics. Dynamic filtering with the best index slope extraction algorithm was nevertheless beneficial for Sentinel-2 NDVI time series despite the availability of quality information from the atmospheric correction procedure
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=19087
Lange, M., Dechant, B., Rebmann, C., Vohland, M., Cuntz, M., Doktor, D. (2017):
Validating MODIS and Sentinel-2 NDVI products at a temperate deciduous forest site using two independent ground-based sensors
Sensors 17 (8), art. 1855 10.3390/s17081855