Open AccesspaNTICA: A Fast 3D Radiative Transfer Scheme to Calculate Surface Solar Irradiance for NWP and LES Models
Author(s) -
Ulrike Wissmeier,
R. Buras,
Bernhard Mayer
Publication year - 2013
Publication title -
journal of applied meteorology and climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.079
H-Index - 134
eISSN - 1558-8432
pISSN - 1558-8424
DOI - 10.1175/jamc-d-12-0227.1
Subject(s) - radiative transfer , grid , irradiance , atmospheric radiative transfer codes , zenith , computational physics , parameterized complexity , radiation , physics , solar zenith angle , numerical weather prediction , monte carlo method , computer science , statistical physics , meteorology , algorithm , optics , mathematics , geometry , atmospheric sciences , statistics
The resolution of numerical weather prediction models is constantly increasing, making it necessary to\udconsider three-dimensional radiative transfer effects such as cloud shadows cast into neighboring grid cells\udand thus affecting radiative heating. For that purpose, fast approximations are needed since threedimensional\udradiative transfer solvers are computationally far too expensive. For the solar spectral range,\uddifferent approaches of how to consider three-dimensional effects were presented in the past—in particular,\udthe tilted independent column approximation (TICA), which aims at improving the calculation of the direct\udradiation, and the nonlocal tilted independent column approximation (NTICA), which is used to additionally\udcorrect the diffuse radiation