Fig. 1

Geographic ___location of Ahvaz and its stations relative to potential dust source regions in the Middle East and Western Asia. The shaded areas represent the dust source regions as identified in Cases 1, 2, and 3. For Case 2 (LAIc = 0.3, Hc = 700), the expanded region compared to Case 3 (LAIc = 0.3, Hc = 500) is highlighted in orange. For Case 1 (LAIc = 0.3, Hc = 900), the expanded region compared to Case 2 is highlighted in red (adapted from Hamidi et al.23).