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Article

Landsat 8 OLI Broadband Albedo Validation in Antarctica and Greenland

1
Department of Physical Sciences, Earth and Environment (DSFTA), Università Degli Studi Di Siena, 53100 Siena, Italy
2
Department of Environmental Science and Policy (ESP), Università Degli Studi Di Milano, 20133 Milan, Italy
3
Department of Science, Università Degli Studi Roma Tre, 00146 Rome, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Peter Romanov
Remote Sens. 2021, 13(4), 799; https://doi.org/10.3390/rs13040799
Received: 7 January 2021 / Revised: 15 February 2021 / Accepted: 19 February 2021 / Published: 22 February 2021
(This article belongs to the Special Issue Recent Advances in Cryospheric Sciences)
The albedo is a fundamental component of the processes that govern the energy budget, and particularly important in the context of climate change. However, a satellite-based high-resolution (30 m) albedo product which can be used in the polar regions up to 82.5° latitude during the summer seasons is lacking. To cover this gap, in this study we calculate satellite-based broadband albedo from Landsat 8 OLI and validate it against broadband albedo measurements from in situ stations located on the Antarctic and Greenland icesheets. The model to derive the albedo from raw satellite data includes an atmospheric and topographic correction and conversion from narrow-band to broadband albedo, and at each step different options were taken into account, in order to provide the best combination of corrections. Results, after being cleaned from anomalous data, show a good agreement with in situ albedo measurements, with a mean absolute error between in situ and satellite albedo of 0.021, a root mean square error of 0.026, a standard deviation of 0.015, a correlation coefficient of 0.995 (p < 0.01) and a bias estimate of −0.005. Considering the structure of the model, it could be applied to data from previous sensors of the Landsat family and help construct a record to analyze albedo variations in the polar regions. View Full-Text
Keywords: albedo; remote sensing; Landsat; cryosphere; polar regions; Antarctica; Greenland albedo; remote sensing; Landsat; cryosphere; polar regions; Antarctica; Greenland
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MDPI and ACS Style

Traversa, G.; Fugazza, D.; Senese, A.; Frezzotti, M. Landsat 8 OLI Broadband Albedo Validation in Antarctica and Greenland. Remote Sens. 2021, 13, 799. https://doi.org/10.3390/rs13040799

AMA Style

Traversa G, Fugazza D, Senese A, Frezzotti M. Landsat 8 OLI Broadband Albedo Validation in Antarctica and Greenland. Remote Sensing. 2021; 13(4):799. https://doi.org/10.3390/rs13040799

Chicago/Turabian Style

Traversa, Giacomo, Davide Fugazza, Antonella Senese, and Massimo Frezzotti. 2021. "Landsat 8 OLI Broadband Albedo Validation in Antarctica and Greenland" Remote Sensing 13, no. 4: 799. https://doi.org/10.3390/rs13040799

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