DRAFT

Environmental Science and Engineering Seminar

Wednesday, February 16, 2022
4:00pm to 5:00pm
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South Mudd 365
Studying climate through a spectral lens
Xianglei Huang, University of Michigan,

Radiative transfer processes are intrinsically spectral dependent, yet this spectral dimension is not broadly utilized in climate studies. I will present three examples to illustrate the merit of spectral dimension in such studies, with a close tie to relevant observations. First, I will show how the longwave spectral flux derived from observations can be used in model diagnostics to reveal compensating biases that broadband diagnostics alone cannot tell for both the mean-state and radiative feedback analysis. Second, I will describe why two longwave processes, e.g., surface spectral emission and reflection and ice-cloud scattering, are missing in current climate models but should be included for the simulation of polar climate. Third, I will describe the implication of the most recent NASA solar spectral irradiance measurements, chiefly the partition between visible and near-infrared, for high-latitude climate simulation.

For more information, please contact Bronagh Glaser by email at bglaser@caltech.edu or visit Environmental Science and Engineering.