AER RRTMG -- the copyright notice as WRF v4.6.1 distributes it

ArWen's legacy-RRTMG longwave and shortwave schemes are transcriptions of
WRF v4.6.1's phys/module_ra_rrtmg_lw.F and phys/module_ra_rrtmg_sw.F, and
its packaged RRTMG_LW_DATA and RRTMG_SW_DATA are byte copies of the files
WRF ships in its run/ directory.  That code is AER's, not UCAR's: UCAR's
public-domain declaration disclaims UCAR's own claims and cannot dispose of
anyone else's, and WRF itself says so by preserving AER's notice -- seven
times in module_ra_rrtmg_lw.F and nine times in module_ra_rrtmg_sw.F.

The notice AER attaches in WRF's copy is reproduced verbatim below, in each
of the three copyright-year spans in which it appears.  Reproducing it is
the condition AER's grant in that copy imposes.

ArWen takes this material under AER's own current BSD-3-Clause grant --
LICENSE-AER-RRTMG-BSD-3-Clause.txt in this directory, published by AER at
https://github.com/AER-RC/RRTMG_LW and https://github.com/AER-RC/RRTMG_SW --
and not under the older non-commercial terms in WRF's copy, because a
copyright holder may licence its own work on any terms it chooses and AER's
BSD-3-Clause offer is public, current and unconditional.  See NOTICE.

Twelve occurrences across the two files read:

!  --------------------------------------------------------------------------
! |                                                                          |
! |  Copyright 2002-2008, Atmospheric & Environmental Research, Inc. (AER).  |
! |  This software may be used, copied, or redistributed as long as it is    |
! |  not sold and this copyright notice is reproduced on each copy made.     |
! |  This model is provided as is without any express or implied warranties. |
! |                       (http://www.rtweb.aer.com/)                        |
! |                                                                          |
!  --------------------------------------------------------------------------

Two occurrences read:

!  --------------------------------------------------------------------------
! |                                                                          |
! |  Copyright 2002-2009, Atmospheric & Environmental Research, Inc. (AER).  |
! |  This software may be used, copied, or redistributed as long as it is    |
! |  not sold and this copyright notice is reproduced on each copy made.     |
! |  This model is provided as is without any express or implied warranties. |
! |                       (http://www.rtweb.aer.com/)                        |
! |                                                                          |
!  --------------------------------------------------------------------------

Two occurrences read:

!  --------------------------------------------------------------------------
! |                                                                          |
! |  Copyright 2006-2008, Atmospheric & Environmental Research, Inc. (AER).  |
! |  This software may be used, copied, or redistributed as long as it is    |
! |  not sold and this copyright notice is reproduced on each copy made.     |
! |  This model is provided as is without any express or implied warranties. |
! |                       (http://www.rtweb.aer.com/)                        |
! |                                                                          |
!  --------------------------------------------------------------------------
