NSIDC Cryosphere and Polar Science Seminar
Retrieving sea ice parameters from passive microwave measurements by Sang-Moo Lee, Post-doctoral Research Fellow, Dept. of Electrical, Computer, and Energy Engineering, CU Boulder.
Sea ice has been recognized as one of the most important geophysical parameters influencing the contemporary Earth’s weather and climate system. While sea ice coverages (e.g., sea ice concentration) have been successfully/continuously measured by space-borne passive microwave measurements, it is still difficult to obtain sea ice parameters such as emissivity, temperature, and refractive index, and so on. To address these challenges, we tried to do bulk modeling of sea ice microwave emission based on the combined Fresnel equation, which interlinks one component of Fresnel polarized reflectivity into the other.
This presentation will provide passive microwave-based algorithms for (i) retrieving sea ice emissivity, temperature, and refractive index, (ii) differentiating between first- and multiyear sea ice, (iii) surface and volume scatterings of a simplified sea ice system, and (iv) climate data record for 30-year snow-ice interface temperature. Finally, a simple climate analysis of 30-year sea ice temperature will be shown.
Bio: Sang-Moo Lee received a Ph.D. degree in School of Earth and Environmental Sciences from Seoul National University, Seoul, Republic of Korea, in 2018 and is currently a post-doctoral research fellow in the Department of Electrical, Computer and Energy Engineering at the University of Colorado Boulder. Sang-Moo Lee focuses on the research of passive microwave remote sensing and radiative transfer modeling.