March 3, 2026

Measurements of the cirrus clouds color ratio from the spaceborne aerosol and carbon dioxide detection lidar onboard DQ-1

Key Points

Color ratios of cirrus clouds show slight correlation with intensity and particle shape, indicating microphysical changes.
Mean color ratios were determined at 0.967, 0.890, and 0.916 across three wavelengths, revealing distinct behavior.
Infrared channel calibration from the ACDL lidar allowed for thorough analysis of latitudinal distribution of color ratios.
Findings highlight the importance of understanding cirrus cloud properties, which impact climate modeling and weather prediction.

Abstract

This study presents cirrus clouds observations from the ACDL spaceborne lidar during June 2023. After calibrating the infrared channels, color ratios were derived and analyzed for their latitudinal distribution and correlation with optical properties. The mean color ratios are 0.967±0.075 (1064 to 532 nm), 0.890±0.237 (1572 to 532 nm), 0.916±0.218 (1572 to 1064 nm), respectively. The lidar ratio is 20.80±5.97sr. Results reveal that color ratios exhibit slight correlations with cirrus intensity and particle shape, and show a clear latitudinal dependence, reflecting microphysical variations of cirrus clouds.

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Cite This Study

Bi et al. (Wed,) studied this question.

synapsesocial.com/papers/69a75be8c6e9836116a2417a https://doi.org/https://doi.org/10.1364/ao.588338

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