Single band atmospheric correction tool for thermal infrared data: application to Landsat 7 ETM+

Joan Miquel Galve; César Coll; Juan Manuel Sánchez; Enric Valor; Raquel Niclòs; Lluís Pérez-Planells; Carolina Doña; Vicente Caselles

doi:10.1117/12.2241425

18 October 2016 Single band atmospheric correction tool for thermal infrared data: application to Landsat 7 ETM+

Joan Miquel Galve, César Coll, Juan Manuel Sánchez, Enric Valor, Raquel Niclòs, Lluís Pérez-Planells, Carolina Doña, Vicente Caselles

Author Affiliations +

Proceedings Volume 10004, Image and Signal Processing for Remote Sensing XXII; 1000405 (2016) https://doi.org/10.1117/12.2241425
Event: SPIE Remote Sensing, 2016, Edinburgh, United Kingdom

Abstract

Atmospheric correction of Thermal Infrared (TIR) remote sensing data is a key process in order to obtain accurate land surface temperatures (LST). Single band atmospheric correction methods are used for sensors provided with a single TIR band. Which employs a radiative transfer model using atmospheric profiles over the study area as inputs to estimate the atmospheric transmittances and emitted radiances.

Currently, TIR data from Landsat 5-TM, Landsat 7-ETM+ and Landsat 8-TIRS can be atmospherically corrected using the on-line Atmospheric Correction Parameter Calculator (ACPC, http://atmcorr.gsfc.nasa.gov). For specific geographical coordinates and observation time, the ACPC provides the atmospheric transmittance, and both upwelling and downwelling radiances, which are calculated from MODTRAN4 radiative transfer simulations with NCEP atmospheric profiles as inputs. Since the ACPC provides the atmospheric parameters for a single location, it does not account for their eventual variability within the full Landsat scene.

The new Single Band Atmospheric Correction (SBAC) tool provides the geolocated atmospheric parameters for every pixel taking into account their altitude. SBAC defines a three-dimensional grid with 1°×1° latitude/longitude spatial resolution, corresponding to the location of NCEP profiles, and 13 altitudes from sea level to 5000 meters. These profiles are entered in MODTRAN5 to calculate the atmospheric parameters corresponding to a given pixel are obtained by weighted spatial interpolation in the horizontal dimensions and linear interpolation in the vertical dimension.

In order to compare both SBAC and ACPC tools, we have compared with ground measurements the Landsat-7/ETM+ LST obtained using both tools over the Valencia ground validation site.

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Joan Miquel Galve, César Coll, Juan Manuel Sánchez, Enric Valor, Raquel Niclòs, Lluís Pérez-Planells, Carolina Doña, and Vicente Caselles "Single band atmospheric correction tool for thermal infrared data: application to Landsat 7 ETM+", Proc. SPIE 10004, Image and Signal Processing for Remote Sensing XXII, 1000405 (18 October 2016); https://doi.org/10.1117/12.2241425

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