This work demonstrates precise aerosol phosphor thermometry (APT) measurements over a large temperature range by applying scattering-referenced APT (SRAPT) with the phosphor divalent Europium doped in Barium Magnesium Aluminate (Eu:BAM). Measurements were taken using Eu:BAM seeded into an air jet mixing with the products of a concentric methane-air flat flame. In-situ calibration of the SRAPT ratio versus temperature was performed from 500 to 1400 K. Peak temperature sensitivities of 1-1.5 %/K were observed, approximately 4 times higher than the spectral luminescence intensity ratio method typically used for Eu:BAM. Despite its moderate quenching temperature (700 K), the high initial signal intensities before the onset of thermal quenching for Eu:BAM allowed reliable single-shot measurements to be made continuously from 500 K to greater than 1200 K. These results highlight the importance of high signal levels for extending the measurement range of SRAPT. (C) 2020 The Combustion Institute. Published by Elsevier Inc. All rights reserved.