This module contains climatological atmospheric aerosol schemes for radiation computations.

This module has three externally callable subroutines:

aer_init() – initialization; called at the start of run to set up module parameters
aer_update() – updating aerosol data; called within the time loop to check and update data sets
setaer() – mapping aeros profile, compute aeros opticals

References:

OPAC climatological aerosols: Hou et al. 2002 [93]; Hess et al. 1998 [83]
GOCART interactive aerosols: Chin et al., 2000 [37] Colarco et al., 2010 - jgr, v115, D14207[42]
MERRA2 aerosol reanalysis: Randles et al., 2017 - jclim, v30, 6823-6850[160] Buchard et al., 2017 - jclim, v30, 6851-6871[30]
Stratospheric volcanical aerosols: Sato et al. 1993 [168]

The initialization program is to set up necessary parameters and working arrays.

Parameters

NLAY	number of model vertical layers (not used)
me	print message control flag

General Algorithm