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Simulation of ICESat-2 micro-pulse laser measurements over polar ice/snow surfaces of different geophysical parameters Mahsa S.Moussavi (1), Waleed Abdalati (2), Ted Scambos (3) (1)CIRES, ESOC, (2)CIRES, ESOC, (3)NSIDC The ATLAS instrument on-board NASA’s ICESat-2 mission will utilize a rather new technology in altimetry with main science objectives of measuring ice sheet elevation changes, sea ice thickness and vegetation biomass. The instrument will be a multi-beam, micro-pulse photon counting lidar operating at green wavelength, that is expected to provide enhanced measurement capabilities as compared to its predecessor, the original ICESat mission. However, there are some uncertainties about the data quality, as photon-counting altimetry from orbit has not been carried out before. This gives rise to a need for a comprehensive study to investigate the effects of different geophysical parameters (surface slope, roughness, reflectivity, ..) on the ICESat-2 signal and the impact it will have on the elevation retrieval along with elevation change recovery. In this poster, the methodology to simulate micro-pulse measurements over different polar snow/ice surfaces with respect to the ATLAS instrument parameters is described. Preliminary results of the Monte-Carlo simulation along with an outline for future work are also presented. |
