Abstract:
Dust storms are considered a severe meteorological disaster, especially in arid and semi-arid regions, which are characterized by dust aerosol-filled air and strong winds across an extensive area. Every year, a large number of aerosols are released from dust storms into the atmosphere, manipulating a deleterious impact both on the environment and human lives. Even if an increasing emphasis is being placed on dust storms due to the rapid change in global climate in the last fifty years by utilizing the measurements from the moderate-resolution imaging spectroradiometer (MODIS), the possibility of utilizing MODIS true-color composite images for the task has not been sufficiently discussed yet. Here, a supervised ensemble learning approach comprising three state-of-the-art models is proposed to detect dust aerosols in the atmosphere of the Earth to test the above hypothesis. The proposed method incorporates a linear combination of U-Net, DeepLabv3+ and Swin U-Net as the deep learning architecture which quantifies a binary semantic segmentation problem of distinguishing dust-susceptible and non- susceptible regions in each unconstrained MODIS image. The framework is tested upon a custom-developed dataset from MODIS measurements which contains 1020 true-colour images, over land and ocean. The ground truth label for each image is manipulated through handcrafted binary segmentation which results in a binary ground truth image for each true-colour MODIS image. The performance of the proposed framework is evaluated using mean intersection-over-union (mIoU) and average pixel accuracy (ACC) in terms of the semantic detection of dust aerosols. In the final testing, the framework achieved its highest Acc of 87.3% with a mIoU of 75.2%. The obtained performance of the framework surpasses the single state-of-the-art modalities and thus, aggregates to a more accurate implementation in the domain of dust aerosol detection.
