Abstract
The problem of light scattering by ice crystals of cirrus clouds is considered in the case of a hexagonal ice plate with different distributions over crystal orientations. The physical-optics approximation based on (E, M)-diffraction theory is compared with two exact numerical methods: the finite difference time domain (FDTD) and the discontinuous Galerkin time domain (DGTD) in order to estimate its accuracy and limits of applicability. It is shown that the accuracy of the physical-optics approximation is estimated as 95% for the averaged backscattering Mueller matrix for particles with size parameter more than 120. Furthermore, the simple expression that allows one to estimate the minimal number of particle orientations required for appropriate spatial averaging has been derived.
| Original language | English |
|---|---|
| Pages (from-to) | 132-140 |
| Number of pages | 9 |
| Journal | Journal of Quantitative Spectroscopy and Radiative Transfer |
| Volume | 195 |
| DOIs | |
| Publication status | Published - Jul 1 2017 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Radiation
- Atomic and Molecular Physics, and Optics
- Spectroscopy
Cite this
Light scattering by ice crystals of cirrus clouds : From exact numerical methods to physical-optics approximation. / Konoshonkin, Alexander; Borovoi, Anatoli; Kustova, Natalia; Okamoto, Hajime; Ishimoto, Hiroshi; Grynko, Yevgen; Förstner, Jens.
In: Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 195, 01.07.2017, p. 132-140.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Light scattering by ice crystals of cirrus clouds
T2 - From exact numerical methods to physical-optics approximation
AU - Konoshonkin, Alexander
AU - Borovoi, Anatoli
AU - Kustova, Natalia
AU - Okamoto, Hajime
AU - Ishimoto, Hiroshi
AU - Grynko, Yevgen
AU - Förstner, Jens
PY - 2017/7/1
Y1 - 2017/7/1
N2 - The problem of light scattering by ice crystals of cirrus clouds is considered in the case of a hexagonal ice plate with different distributions over crystal orientations. The physical-optics approximation based on (E, M)-diffraction theory is compared with two exact numerical methods: the finite difference time domain (FDTD) and the discontinuous Galerkin time domain (DGTD) in order to estimate its accuracy and limits of applicability. It is shown that the accuracy of the physical-optics approximation is estimated as 95% for the averaged backscattering Mueller matrix for particles with size parameter more than 120. Furthermore, the simple expression that allows one to estimate the minimal number of particle orientations required for appropriate spatial averaging has been derived.
AB - The problem of light scattering by ice crystals of cirrus clouds is considered in the case of a hexagonal ice plate with different distributions over crystal orientations. The physical-optics approximation based on (E, M)-diffraction theory is compared with two exact numerical methods: the finite difference time domain (FDTD) and the discontinuous Galerkin time domain (DGTD) in order to estimate its accuracy and limits of applicability. It is shown that the accuracy of the physical-optics approximation is estimated as 95% for the averaged backscattering Mueller matrix for particles with size parameter more than 120. Furthermore, the simple expression that allows one to estimate the minimal number of particle orientations required for appropriate spatial averaging has been derived.
UR - http://www.scopus.com/inward/record.url?scp=85008156645&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85008156645&partnerID=8YFLogxK
U2 - 10.1016/j.jqsrt.2016.12.024
DO - 10.1016/j.jqsrt.2016.12.024
M3 - Article
AN - SCOPUS:85008156645
VL - 195
SP - 132
EP - 140
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
ER -