题目： Spectrum: an underutilized dimension in climate observations and modeling
报告人：Prof. Xianglei Huang （Department of Climate and Space Sciences and Engineering, University of Michigan）
邀请人：汪名怀 教授
时间： 2018年12月24日（周一）下午2:00
地点： bwin必赢D103报告厅
Abstract:
While broadband flux has been widely used in climate studies, its integrand, the spectral flux, has not been fully utilized in climate studies. An important trait of spectral diagnostics is that they can reveal compensating biases, which cannot be revealed by broadband diagnostics alone. I will first describe an algorithm developed in my group to derive such spectral flux from currently available satellite observations over the entire longwave spectrum. Four GCMs are used to illustrate the application of the spectral flux and cloud radiative effects in model evaluations. Next, I will describe the longwave spectral radiative feedbacks as derived from the CMIP3 and CMIP5 archives using a spectral radiative kernel technique, as well as the spectral decomposition of longwave cloud radiative feedback from the A-Train observations and the CESM simulation. Last, I will briefly describe a study of incorporating surface spectral emissivity into the climate model, the motivation, the procedure, and the impact on the simulated climate mean state as well as climate changes. If time allows, I will briefly mention two ongoing satellite missions that I participate in, PREFIRE by NASA and FORUM by ESA, and the connections to the spectral studies described above.
A short biography:
Prof. Xianglei Huang is currently a tenured associate professor in the Department of Climate and Space Sciences at the University of Michigan. He serves as an editor of Journal of Climate and is the Chair-Elect for the AMS atmospheric radiation committee. His expertise is in atmospheric radiation, satellite remote sensing and climate modeling. He is a recipient of 2015 NASA Langley's Henry J.E. Reid Award. He is a co-Investigator for PREFIRE, a mission recently selected by NASA Earth Venture program. He is also a co-Investigator for FORUM, a mission under phase-A study for ESA (European Space Agency) Earth Explorer 9. He obtained his B.S. from University of Science and Technology of China and Ph.D. from Caltech, and did his postdoc at NOAA/GFDL and Princeton University.
bwin必赢