Temperature-dependent optical properties of ice crystals in the far-infrared regime
Author(s)
Ren, Tong
Yang, Ping
Brindley, Helen E
L'Ecuyer, Tristan S
Maestri, Tiziano
Type
Journal Article
Abstract
A database of temperature-dependent hexagonal ice aggregate optical properties in the far-infrared (FIR) spectrum is developed to support FIR missions, particularly the current Polar Radiant Energy in the Far InfraRed Experiment and the upcoming Far-infrared-Outgoing-Radiation Understanding and Monitoring. Based on this data set, simulations of the brightness temperatures (BTs) in the 100–667 cm−1 FIR region are conducted for an anvil-like ice cloud in a tropical atmosphere. The results show nonnegligible impact of ice cloud temperature on simulated BTs, which can be as large as 3 K due to the difference between fixed 160 or 270 K cloud temperature and the benchmark counterpart, varying in accordance with the ambient temperature profile for a cloud residing between 249.6 and 199.6 K. To enhance the accuracy of FIR radiative transfer modeling, it is recommended to incorporate temperature-dependent optical properties of ice clouds.
Date Issued
2025-06-28
Date Acceptance
2025-06-01
Citation
Geophysical Research Letters, 2025, 52 (12)
ISSN
0094-8276
Publisher
Wiley
Journal / Book Title
Geophysical Research Letters
Volume
52
Issue
12
Copyright Statement
© 2025. The Author(s). This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
Subjects
ACCURATE PARAMETERIZATION
CIRRUS CLOUDS
CLIMATE
COLLECTION 6
Geology
Geosciences, Multidisciplinary
MICROPHYSICS GUIDE
PARTICLES
PHIPS-HALO
Physical Sciences
RADIATIVE-TRANSFER
Science & Technology
SENSITIVITY
SINGLE-SCATTERING PROPERTIES
Publication Status
Published
Article Number
e2025GL116735
Date Publish Online
2025-06-18