Effect of Specular High-Level Clouds on Scattered Solar Radiation Fluxes at the Zenith

Bryukhanov, I. D.; Zuev, S. V.; Samokhvalov, I. V.

doi:10.1134/s1024856021040059

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…In addition, the parallel signal recording makes it possible to conduct a long continuous session of HLC sensing, and then select the most promising time intervals for processing. This procedure allowed us to establish that the same lengthy cloud can contain both specular (containing horizontally oriented ice particles) and non-specular local areas, as well as to estimate their sizes [25,26].…”

Section: High-altitude Matrix Polarization Lidar Of National Research...mentioning

confidence: 99%

“…[15,28]. In spite of remoteness of the aerological stations of Novosibirsk and Kolpashevo from each other, the meteorological conditions at the altitudes of HLC formation based on the data of both stations usually differ insignificantly [15,26]. To illustrate the small differences in the vertical profiles of meteorological values from data of these stations, Figure 5 shows examples of temperature vertical profiles and wind direction measured at these stations.…”

Section: Radiosonde Observationsmentioning

confidence: 99%

“…This choice becomes more important when estimating the drift parameters of the aerosol formations. Such an assessment is performed for the identification and study of contrails (e.g., [31]), as well as for the temporal correction of the results of complex lidar-pyranometer experiments [26].…”

Section: Radiosonde Observationsmentioning

confidence: 99%

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Evaluation of the Applicability of the ERA5 Reanalysis for Interpretation of the Polarization Laser Sensing Data of the High-Level Clouds in Western Siberia

Bryukhanov¹,

Penzin²,

Kuchinskaia³

et al. 2022

Preprint

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This article presents results of the polarization laser studies of the optical and microphysical characteristics of the high-level clouds (HLC). The high-altitude matrix polarization lidar (HAMPL; Tomsk, Russia) is described. HAMPL measures vertical profiles of all elements of the backscattering phase matrix (BSPM) of the HLC. Based on the joint analysis of lidar and radiosonde observations it is shown that the spatial structure of the HLC containing oriented ice crystals is inhomogeneous in the horizontal wind direction. It includes local areas with oriented particles; the sizes of such areas are estimated together with the most probable meteorological conditions of their formation. The shortcomings of the radiosonde observations performed closest to the location of the HAMPL are described. The applicability of the ERA5 reanalysis data of the European Centre for Medium-Range Weather Forecasts for use as an alternative source of information on the vertical profiles of meteorological quantities for the interpretation of HLC lidar sensing data in Western Siberia was checked.

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Section: High-altitude Matrix Polarization Lidar Of National Research...mentioning

confidence: 99%

Section: Radiosonde Observationsmentioning

confidence: 99%

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Evaluation of the Applicability of the ERA5 Reanalysis for Interpretation of the Polarization Laser Sensing Data of the High-Level Clouds in Western Siberia

Bryukhanov¹,

Penzin²,

Kuchinskaia³

et al. 2022

Preprint

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“…Most often, in areas of a cloud with randomly oriented particles, the depolarization ratio is within δ = 0.3-0.6 3,4 . In many cases, crystalline particles of cirrus clouds have a pronounced orientation in space, which must be taken into account when calculating radiation fluxes 5 . Basically, the predominant orientation of the crystals in the horizontal plane is observed.…”

Section: Introductionmentioning

confidence: 99%

Effect of diffraction on mirror reflection by crystalline particles

Kokhanenko,

Balin,

Klemasheva

et al. 2023

29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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The report presents the results of observations of horizontally oriented crystalline particles in the clouds of the upper levels using a scanning polarization lidar. The measured dependence of the lidar signal on the lidar inclination angle is described by an exponential distribution and corresponds to the distribution of particle inclinations relative to the horizontal plane (flutter). Diffraction on the contour of the particles appears as a smoothing of the top of the measured distribution and depends on the size of the crystals. The effect of diffraction is significant for narrow distributions over tilt angles.

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“…Atmospheric sensing is performed at any time of the day in the absence of precipitation, gusty winds and low cloudiness. A distinctive feature of the mentioned lidar is the possibility of performing all the measurements necessary for the experimental determination of the vertical profile of the backscattering phase matrix (BSPM) of the HLC [5,6]. The existing analogues (e.g., [7][8][9][10]) allow determining only some elements of the BSPM, and the rest are calculated based on the symmetry properties of such matrices.…”

mentioning

confidence: 99%

Verification of ERA5 reanalysis data for the interpretation of lidar investigation of high-level clouds

Penzin

Bryukhanov²,

Kuchinskaia³

et al. 2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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Interpretation of the data from lidar studies of high-level clouds requires information on the vertical profiles of meteorological quantities. The nearest aerological stations to Tomsk are located at about 250 km away from the city and launch radiosondes only twice a day. The ERA5 reanalysis was considered as a source of vertical profiles, which provides higher spatial and temporal resolution. It is compared with the aerological data, and the possibility of its using was evaluated in this research.

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Effect of Specular High-Level Clouds on Scattered Solar Radiation Fluxes at the Zenith

Cited by 4 publications

References 16 publications

Evaluation of the Applicability of the ERA5 Reanalysis for Interpretation of the Polarization Laser Sensing Data of the High-Level Clouds in Western Siberia

Evaluation of the Applicability of the ERA5 Reanalysis for Interpretation of the Polarization Laser Sensing Data of the High-Level Clouds in Western Siberia

Effect of diffraction on mirror reflection by crystalline particles

Verification of ERA5 reanalysis data for the interpretation of lidar investigation of high-level clouds

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