Detailed Record



Improved Temperature‐Dependent Ice Refractive Index Compilation in the Far‐Infrared Spectrum


Abstract A new ice refractive index compilation is reported for a broad spectrum ranging from 0.0443 to 10 6 μm, focusing on the pronounced temperature‐dependence of ice optical properties in the far‐infrared (far‐IR) segment (15–100 μm). A sensitivity study assuming spherical particles shows that selecting ice refractive indices at 12 temperatures and 215 wavelengths in the far‐IR region gives sufficient accuracy in interpolated refractive indices for developing a new ice crystal optical property database. Furthermore, we demonstrate the differences between the bulk single‐scattering properties computed for hexagonal ice particles with this new compilation compared to a previous iteration at three far‐IR wavelengths where substantial differences are noticed between the two ice refractive index compilations. We suggest that our new ice refractive index data set will improve downstream light‐scattering applications for upcoming far‐IR satellite missions and allow robust modeling of outgoing longwave radiation under ice cloud conditions.
Authors Siheng Wang ORCID , Tong Ren ORCID , Ping Yang ORCID , Masanori Saito University of WyomingORCID , Helen Brindley ORCID
Journal Info American Geophysical Union | Geophysical Research Letters , vol: 51 , iss: 14
Publication Date 7/12/2024
ISSN 0094-8276
TypeKeyword Image article
Open Access gold Gold Access
DOI https://doi.org/10.1029/2024gl110176
KeywordsKeyword Image Ice cloud (Score: 0.45216855) , Longwave (Score: 0.4483114)