The Application of Infrared Spectral Radiances and Fluxes for Arctic Climate Monitoring and Cloud Phase Determination from Space ...

The Arctic climate is strongly influenced by infrared (IR) radiation emitted and absorbed by greenhouse gases, clouds, and the surface. As the Arctic continues to rapidly change, it is crucial to further understand how changes in such geophysical variables influence changes in IR flux at the Arctic...

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Bibliographic Details
Main Author: Peterson, Colten
Format: Article in Journal/Newspaper
Language:English
Published: My University 2022
Subjects:
Online Access:https://dx.doi.org/10.7302/6323
http://deepblue.lib.umich.edu/handle/2027.42/174592
Description
Summary:The Arctic climate is strongly influenced by infrared (IR) radiation emitted and absorbed by greenhouse gases, clouds, and the surface. As the Arctic continues to rapidly change, it is crucial to further understand how changes in such geophysical variables influence changes in IR flux at the Arctic surface and the top-of-atmosphere. Cloud phase (i.e., ice, liquid, and mixed) can affect the clouds’ overall contributions to the IR fluxes. However, the spatial and temporal occurrences of Arctic cloud phase are not well characterized. Satellite observations of spectrally resolved IR fluxes can be used to connect changes in the atmosphere and surface to broadband IR flux changes, however, such studies have not been performed in the Arctic. Spectral IR radiances can be used for satellite-based cloud phase retrievals, but conventional methods using the mid-IR window region (~800-1250 cm-1) have limitations in polar regions, especially for mixed phase clouds. It may be possible to improve Arctic mid-IR cloud phase ...