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======  NE1850AERCN_N1M_v0  ======

===== Slab ocean 1850 control simulation =====

**Purpose of simulation:**  

**Contact person:**         Jens Debernard

**Data owner:    **         Jens Debernard (jens.debernard@met.no)  

**Revision Number:**        r167  

**Production computer used:** Cray XT3 in Bergen (hexagon)

**Production date:**        April-May 2013

**Ensemble runs:**          No  

**Storage locations:**      

**Storage space:**          1

**Projects:**               EarthClim

**Publications:**            

**Papers in preparation:**  

**Simulation name(s):**     NE1850AERCN_N1M_v0
 
**Compset name used:**      NE1850AERCN

**Model type:**             Prognostic atm, land, ice and slab ocean.

**Type of run:**            Branch

**Simulation period:**      year 21 - 63

**Initialisation **         Start from 20-year spin-up from NAER1850CNOC_f19_g16_06, year 760

**Resolution:**             f19_g16= 1.9x2.5 degree atmosphere/land. Bipolar ocean/ice grid, ~ 1 degree

**Greenhouse gases:**       1850 fixed value.

**Emission inventories**    IPCC AR5 1850 Control,  

**Frequency for output:**   Monthly.


** Special considerations: ** 



**Tuning parameters which are changed relative to the host model CAM4:** 

rhminl:  0.90        lower RH threshold for formation of low stratiform clouds (0.91 in CAM4) 

critrp:  5.0 mm/day  maximum prcipitation rate for suppression of autoconversion of cloud water (0.5 mm/day in CAM4)

r3lc:    14 um       critical mean droplet volume radius for onset of autoconversion (10 um in CAM4)