[AOS21-P04] Introduction of the SWOT satellite altimetry mission
Keywords:SWOT, Satellite Altimetry, Surface Water, Sea Surface Height
Especially for hydrology, SWOT will be the first-ever comprehensive measurement of water surface elevations, as the spatial scales of rivers and lakes are much smaller than that of oceans. It will observe rivers wider than 100m and lakes and wetlands larger than 5ha with better than 10cm vertical accuracy, and will provide spatial and temporal distributions of surface water extent and storage. In addition to the directly-observable water surface elevations, by delineating water surface slope, SWOT is expected to estimate river discharge from space. The SWOT measurements, in combination with other ancillary datasets and models, will enhance our ability to assess the storage change in lakes and reservoirs, the occurrence of flood and draught, the dynamics of wetland and floodplain, at a global scale.
Toward its launch in 2021, tremendous efforts are ongoing for sensor development, error budget analysis, algorithm development, and ancillary data/model preparation. Overview of the SWOT mission, mainly focusing on hydrology components, will be presented during the JpGU-AGU joint meeting.