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Updated: Jun 9, 2026
09:36
The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants
Published on: May 8, 2015
Remote sensing of cirrus cloud parameters using advanced very-high-resolution radiometer 3.7- and 1 O.9-microm
Applied Optics
|September 8, 2010
Summary
This study introduces a new method using satellite data to determine cirrus cloud temperature, optical depth, and ice crystal size. The retrieval scheme shows promising accuracy when compared with ground-based and aircraft measurements.
Area of Science:
- Atmospheric Science
- Remote Sensing
- Cloud Physics
Background:
- Cirrus clouds significantly impact Earth's radiative balance.
- Accurate retrieval of cirrus cloud properties is crucial for climate modeling.
Purpose of the Study:
- To develop a retrieval scheme for simultaneous estimation of cirrus cloud temperature, optical depth, and mean effective ice-crystal size.
- To validate the retrieval scheme using satellite data and in situ measurements.
Main Methods:
- Utilized Advanced Very-High-Resolution Radiometer (AVHRR) data from 3.7- and 10.9-micrometer channels.
- Employed numerical solutions of nonlinear algebraic equations derived from radiative transfer theory.
- Correlated channel emissivities using the effective extinction ratio, examining its dependence on ice-crystal size distribution.
Main Results:
- The brightness temperature difference between channels is sensitive to cirrus temperature and ice-crystal size.
- Retrieved cirrus heights showed good agreement with lidar measurements.
- Retrieved mean effective crystal size closely matched in situ aircraft measurements.
Conclusions:
- The developed retrieval scheme provides a reliable method for estimating cirrus cloud properties from satellite data.
- The findings contribute to improved understanding and modeling of cirrus cloud climate effects.
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