| Description |
MAX-DOAS (Multi-Axis Differential Optical Absorption Spectroscopy) in the UV-Visible range measures SO2 (Sulfur Dioxide) column densities by analyzing scattered sunlight, offering high sensitivity to tropospheric trace gases, even near the ground, by taking measurements at different viewing angles (elevation) to distinguish between stratospheric and lower atmospheric contributions, crucial for mapping SO2 from pollution or volcanoes, leading to vertical profiles and total column amounts. |