Haze detection using brightness temperature of MODIS' infrared channel data

Abstract

The dangers of forest fires in Indonesia are now seen as a regional and even global disaster. This may result in smokes haze which can destabilize security in all sectors of the economy, including aviation. This research aims to detect haze using the brightness temperature of MODIS' infrared channel. As known that the MODIS Aqua and Terra satellites are equipped by especially the infrared channel of wavelengths of 10.780 - 11.280 μ m (channel 31) and 11.770 - 12.270 μ m (channel 32) as well as of wavelength of 3.929 - 3.989 μ m (channel 22) and 4.020 - 4.080 μ m (channel 23) which could be utilized to estimate the brightness temperature and to understand how the surface temperature was occurred and distributed. In this case, the brightness temperature was measured using the multi-channel method. However, the radiance value of the NASA's website data that is different from the brightness temperature of the LAPAN's website data was converted by applying the Planck formula. The conclusions of the research show that there was a similarity spatial performance (digital imagery) of haze detection between both data sources, especially the data of 15 - 16 July 2018 and 6 - 7 August 2019. The spatial results of channels 22 - 23 described a lot of contact between the values of basic surface, fog, sandstorm, and smoke values. Meanwhile, the spatial result of channels 31 and 32 identified the majority contact of fog and cloud.