Scattering matrixes of hexagonal ice crystals of cirrus clouds calculated for problems of radiation balance

2018 ◽  
Author(s):  
Natalia V. Kustova ◽  
Anatoli G. Borovoi ◽  
Alexander V. Konoshonkin ◽  
Andrey P. Lyulyakin ◽  
Tatiana B. Zhuravleva ◽  
...  
Keyword(s):  
Cirrus Clouds ◽  
Ice Crystals ◽  
Radiation Balance ◽  
Hexagonal Ice

Interpretation of ATSR-2 measurements of cirrus clouds using phase functions of imperfect hexagonal ice crystals

1998 ◽  
Author(s):  
Wouter H. Knap ◽  
M. Hess ◽  
Piet Stammes ◽  
Robert B. A. Koelemeijer ◽  
Philip D. Watts
Keyword(s):  
Cirrus Clouds ◽  
Ice Crystals ◽  
Hexagonal Ice ◽  
Phase Functions

Backscatter ratios for arbitrary oriented hexagonal ice crystals of cirrus clouds

2014 ◽  
Vol 39 (19) ◽  
pp. 5788 ◽  
Author(s):  
Anatoli Borovoi ◽  
Alexander Konoshonkin ◽  
Natalia Kustova
Keyword(s):  
Cirrus Clouds ◽  
Ice Crystals ◽  
Hexagonal Ice

Light scattering by absorbing hexagonal ice crystals in cirrus clouds

1995 ◽  
Vol 34 (25) ◽  
pp. 5867 ◽  
Author(s):  
Jianyun Zhang ◽  
Lisheng Xu
Keyword(s):  
Light Scattering ◽  
Cirrus Clouds ◽  
Ice Crystals ◽  
Hexagonal Ice

Backscattering by hexagonal ice crystals of cirrus clouds

2013 ◽  
Vol 38 (15) ◽  
pp. 2881 ◽  
Author(s):  
Anatoli Borovoi ◽  
Alexander Konoshonkin ◽  
Natalia Kustova
Keyword(s):  
Cirrus Clouds ◽  
Ice Crystals ◽  
Hexagonal Ice

scholarly journals Aerosol effects on ice clouds: can the traditional concept of aerosol indirect effects be applied to aerosol-cloud interactions in cirrus clouds?

2010 ◽  
Vol 10 (21) ◽  
pp. 10345-10358 ◽  
Author(s):  
S. S. Lee ◽  
J. E. Penner
Keyword(s):  
Radiative Forcing ◽  
Critical Role ◽  
Cloud Microphysics ◽  
Cirrus Clouds ◽  
Ice Crystals ◽  
Radiation Budget ◽  
Traditional Concept ◽  
Substantial Impact ◽  
Double Moment ◽  
Aerosol Cloud Interactions

Abstract. Cirrus clouds cover approximately 20–25% of the globe and thus play an important role in the Earth's radiation budget. Therefore the effect of aerosols on cirrus clouds can have a substantial impact on global radiative forcing if either the ice-water path (IWP) and/or the cloud ice number concentration (CINC) changes. This study examines the aerosol indirect effect (AIE) through changes in the CINC and IWP for a cirrus cloud case. We use a cloud-system resolving model (CSRM) coupled with a double-moment representation of cloud microphysics. Intensified interactions among CINC, deposition and dynamics play a critical role in increasing the IWP as aerosols increase. Increased IWP leads to a smaller change in the outgoing LW radiation relative to that for the SW radiation for increasing aerosols. Increased aerosols lead to increased CINC, providing increased surface area for water vapor deposition. The increased deposition causes depositional heating which produces stronger updrafts, and leads to the increased IWP. The conversion of ice crystals to aggregates through autoconversion and accretion plays a negligible role in the IWP response to aerosols, and the sedimentation of aggregates is negligible. The sedimentation of ice crystals plays a more important role in the IWP response to aerosol increases than the sedimentation of aggregates, but not more than the interactions among the CINC, deposition and dynamics.

scholarly journals Monte Carlo simulation of halos in the crystal clouds

2021 ◽  
Vol 2099 (1) ◽  
pp. 012067
Author(s):  
Q Mu ◽  
E G Kablukova ◽  
B A Kargin ◽  
S M Prigarin
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Ray Tracing ◽  
Multiple Scattering ◽  
Radiation Transfer ◽  
Cirrus Clouds ◽  
Ice Crystals ◽  
The Sun ◽  
Different Shapes

Abstract In this paper, we try to answer the question: how the multiple scattering, the sun elevation, shape and orientation of ice crystals in the cirrus clouds affect a halo pattern. To study the radiation transfer in optically anisotropic clouds, we have developed the software based on Monte Carlo method and ray tracing. In addition to halos, this software enables one to simulate “anti-halos”, which above the cloud layer can be seen by observers. We present the visualization of halos and anti-halos generated by the cirrus clouds for different shapes and orientations of ice crystals.

Backscattering by hexagonal ice crystals

1999 ◽  
Author(s):  
Edward I. Naats ◽  
Anatoli G. Borovoi ◽  
Ulrich G. Oppel
Keyword(s):  
Ice Crystals ◽  
Hexagonal Ice
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