Version
6.6 |
|
Version
6.61 |
|
Version
6.62 |
-
Shortwave
radiation parameterization modified; Instead of
using Katayama's ('72) formulations, shortwave
absorption by ozone computed following Lacis and
Hansen ('74) [Farrara,
Kim and Mechoso '97]
|
Version
6.63 |
-
Shortwave
radiation parameterization modified again; Instead
of using Katayama's ('72) formulations, shortwave
absorption by water vapor computed following Manabe
and Moeller ('61) [Kim,
Farrara and Mechoso '98]
|
Version
6.7 |
|
Version
6.8 |
-
Formulations
of the vertical advection between the PBL and
the free atmosphere improved (summary)
|
Version
6.9 |
|
Version
6.91
|
|
Version
6.92 |
-
Prognostic
Arakawa-Schubert cumulus parameterization scheme
(Pan and Randall, QJRMS '98)
-
Grid-scale
precipitation computation procedure improved
-
Relaxed
adjustment time scale (5 physics timesteps) applied
to increments in water vapor mixing ratio and
potential temperature from moist convective adjustment
routine
|
Version
6.95 |
-
The
layer cloud instability (LCI) process revised
such that the effect of LCI on prognostic variables
is added instantaneously rather than over the
duration of one 'physics' timestep
-
The
PBL cloud amount, which depends on the variance
of the underlying topography, modified as described
in Li and Arakawa ('98)
-
The
method for calculating the optical depth of PBL
clouds, which uses the diagnosed cloud liquid
water of Suarez et al. ('83), modified for improvement
-
Several
bugs fixed; the most significant being in the
cumulus redistribution of momentum, such that
this is done correctly now whereas previously
it was underestimated by an order of magnitude
or more
|
Version
6.98 |
-
Revised
evaporation of large-scale precipitation; loosely
based on Eq. 6.3.10 of Cheng and Arakawa ('97)
-
Modified
2.5 long. x 2 lat. version of topography to reduce
steepness of slope (specifically don't allow slopes
greater than 1/100) [Farrara]
-
Drag
added to momentum in the PBL in regions where
the slope of the topography is greater than 1/200.
This drag is linearly proportional to the slope
of the topography with a maximum coefficient of
1x10**-3 s**-1 [Farrara]
-
Minor
modifications to the cumulus and large-scale precipitation
parameterizations:
If ( topographic variance > 10**5 ), do not
apply the 95% PBL RH criterion for the occurrence
of cumulus convection, and do not consider the
nimbostratus case for large-scale precipitation
from the PBL. [Farrara]
|
Version
7.0 |
|
Version
7.1 |
|
Version
7.2 |
|
Version
7.3 |
|
Version
8.0 (In progress) |
- Multi-Layer
PBL [Konor and Arakawa]
|