Fiber Lidar Sensing of the Vertical Profiles of Low-Level Cloud Extinction Coefficients at 1064 nm.
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| Title: | Fiber Lidar Sensing of the Vertical Profiles of Low-Level Cloud Extinction Coefficients at 1064 nm. |
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| Authors: | Park, Sun-Ho1 (AUTHOR), Volkov, Sergei N.2 (AUTHOR) snvolk@iao.ru, Zaitsev, Nikolai G.2,3 (AUTHOR), Lee, Han-Lim1 (AUTHOR), Kim, Duk-Hyeon2,3 (AUTHOR), Noh, Young-Min1,3 (AUTHOR) |
| Source: | Remote Sensing. Mar2026, Vol. 18 Issue 6, p891. 25p. |
| Subjects: | LIDAR, Stratus clouds, Atmospheric radiation measurement, Wavelengths, Remote sensing, Attenuation coefficients, Temperature inversions |
| Geographic Terms: | South Korea |
| Abstract: | Highlights: What are the main findings? This paper presents the results of a methodological case study of thin low-level clouds in the atmosphere using a 1064 nm fiber lidar. What are the implications of the main findings? The measures undertaken to modernize the technology and method of sensing using the fiber lidar make it possible to retrieve the vertical profiles of stratus cloud extinction coefficients. This increases the volume of statistical data for different seasons of the annual cycle, which is a promising direction in remote sensing of the vertical profiles of the extinction in low-level clouds. Results of a methodological case study of low-level clouds in the atmosphere using a 1064 nm fiber lidar are presented. The lidar experiment was carried out in Daejeon, Republic of Korea, in January–March 2025. The study's primary objective was to ascertain the vertical extinction coefficient profiles pertaining to tenuous, low-altitude cloud formations via implementation of a refined Sequential Lidar Signal Processing Algorithm (SLSPA). The SLSPA incorporates statistical estimation theory to assess signal and measurement error. Cloud extinction coefficient profiles are estimated within the SLSPA utilizing the modified Klett–Fernald inversion algorithm. The SLSPA adaptation is required (a) to evaluate the accuracy of Q-switch laser-based lidar sounding signal deconvolution, (b) to mitigate the impact of the lidar form factor on measurement results, (c) to account for aerosol extinction coefficient variability within the cloud in the modified inversion algorithm (MIA), and (d) to evaluate multiple scattering effect correction in the MIA. Theoretical and experimental aspects of the modified SLSPA are considered sequentially in the present work. The experimental results presented here are based on datasets sampled from the entire array of experimental data obtained during the measurement period. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Highlights: What are the main findings? This paper presents the results of a methodological case study of thin low-level clouds in the atmosphere using a 1064 nm fiber lidar. What are the implications of the main findings? The measures undertaken to modernize the technology and method of sensing using the fiber lidar make it possible to retrieve the vertical profiles of stratus cloud extinction coefficients. This increases the volume of statistical data for different seasons of the annual cycle, which is a promising direction in remote sensing of the vertical profiles of the extinction in low-level clouds. Results of a methodological case study of low-level clouds in the atmosphere using a 1064 nm fiber lidar are presented. The lidar experiment was carried out in Daejeon, Republic of Korea, in January–March 2025. The study's primary objective was to ascertain the vertical extinction coefficient profiles pertaining to tenuous, low-altitude cloud formations via implementation of a refined Sequential Lidar Signal Processing Algorithm (SLSPA). The SLSPA incorporates statistical estimation theory to assess signal and measurement error. Cloud extinction coefficient profiles are estimated within the SLSPA utilizing the modified Klett–Fernald inversion algorithm. The SLSPA adaptation is required (a) to evaluate the accuracy of Q-switch laser-based lidar sounding signal deconvolution, (b) to mitigate the impact of the lidar form factor on measurement results, (c) to account for aerosol extinction coefficient variability within the cloud in the modified inversion algorithm (MIA), and (d) to evaluate multiple scattering effect correction in the MIA. Theoretical and experimental aspects of the modified SLSPA are considered sequentially in the present work. The experimental results presented here are based on datasets sampled from the entire array of experimental data obtained during the measurement period. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20724292 |
| DOI: | 10.3390/rs18060891 |
