- Related Research Areas
- Climate Variability & Change
This proposal offers an accomplished team of researchers who will use an integrated approach combining data analysis, modeling and simulation in order to maximize ICESat-II capabilities needed to achieve a broad range of science objectives. Our proposed tasks leverage ongoing research utilizing ICESat-I data for ice sheet and glacier elevation and mass change, natural hazard monitoring, Digital Elevation Model (DEM) control and validation, characterization of atmospheric effects on laser ranging and development of advanced capabilities for laser altimeter calibration. The anticipated outcomes of our proposed tasks include refinement of science and measurement requirements, improved instrument implementation and observing strategies and definition of algorithms for computing enhanced geophysical products. Specific tasks contributing to these outcomes are: - evaluation of single and multi-beam laser footprint sampling geometries, - definition of improved elevation products for complex terrains, - assessment of time/space sampling needs for glaciers and natural hazards, - establishment of maneuver capabilities needed for targeted observations, - characterization of frequency of observing ice sheets and land areas through clouds, - quantification of instrumental and atmospheric contributions to ranging biases, - design of multi-beam cross-over calibrations for improved precision attitude determination, and - provision of glacier and ice sheet mass change observations at the highest spatial and temporal resolution possible using GRACE and ICESat-I combined solutions. The tasks are connected one to another, with outcomes from individual tasks providing input to guide the conduct of other tasks. This study addresses NASA’s strategic goal to study Earth from space using the ICESat-II mission to advance scientific understanding of ice mass changes and geohazards and to meet societal needs by predicting sea-level change and mitigating natural hazards.
Project PI: David Harding/NASA Goddard Space Flight Center
Planetary Geodynamics Laboratory NASA/GSFC, Code 698 Greenbelt, MD 20771
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