Features:
- same resolution as N/N Reanalysis: T62 28 levels
- same raw observed data
- same dependence of temperature retrievals
- fixed the Southern hemisphere PAOBS problem (79-92)
- fixed snow cover analysis (74-94)
- removed spectral snow problem
- simple rainfall assimilation
- updated precipitation parameterization (SAS vs Pan-Grell scheme)
- smoothed orography (needed by new precipitation)
- Hong-Pan planetary boundary layer (non-local diffusion)
- CO2 (350 ppmv) AMIP-II constants
- new ozone climatology
- new short-wave radiation (Chou 1992)
- run radiation code more frequently (1 hour vs 3 hours)
- cloud-top cooling "fixed"
- updated cloud parameterization
- better cloud diagnostic fields
- fixed cloud tuning
- fixed snow melt term
- better snow/water budget diagnostic fields
- fixed oceanic and improved desert albedo (Briegleb 1982)
- snow mask interpoled from weekly to daily values
- improved sea-ice SST fields (AMIP-II, Mike Fiorino)
- nudging of deep layer soil wetness removed
- updated observational error table (assimilation system)
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