TY - JOUR
T1 - New treatment of strongly anisotropic scattering phase functions
T2 - The delta-M+ method
AU - Lin, Zhenyi
AU - Chen, Nan
AU - Fan, Yongzhen
AU - Li, Wei
AU - Stamnes, Knut
AU - Stamnes, Snorre
N1 - Publisher Copyright:
© 2018 American Meteorological Society.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The treatment of strongly anisotropic scattering phase functions is still a challenge for accurate radiance computations. The new delta-M+ method resolves this problem by introducing a reliable, fast, accurate, and easy-to-use Legendre expansion of the scattering phase function with modified moments. Delta-M+ is an upgrade of the widely used delta-M method that truncates the forward scattering peak with a Dirac delta function, where the "+" symbol indicates that it essentially matches moments beyond the first M terms. Compared with the original delta-M method, delta-M+ has the same computational efficiency, but for radiance computations, the accuracy and stability have been increased dramatically.
AB - The treatment of strongly anisotropic scattering phase functions is still a challenge for accurate radiance computations. The new delta-M+ method resolves this problem by introducing a reliable, fast, accurate, and easy-to-use Legendre expansion of the scattering phase function with modified moments. Delta-M+ is an upgrade of the widely used delta-M method that truncates the forward scattering peak with a Dirac delta function, where the "+" symbol indicates that it essentially matches moments beyond the first M terms. Compared with the original delta-M method, delta-M+ has the same computational efficiency, but for radiance computations, the accuracy and stability have been increased dramatically.
KW - Radiative transfer
KW - Remote sensing
UR - http://www.scopus.com/inward/record.url?scp=85040948646&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040948646&partnerID=8YFLogxK
U2 - 10.1175/JAS-D-17-0233.1
DO - 10.1175/JAS-D-17-0233.1
M3 - Article
AN - SCOPUS:85040948646
SN - 0022-4928
VL - 75
SP - 327
EP - 336
JO - Journal of the Atmospheric Sciences
JF - Journal of the Atmospheric Sciences
IS - 1
ER -