noresm:modeldeffiles:n_r99pdx

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noresm:modeldeffiles:n_r99pdx [2014-04-03 11:05:39]
alfk [Model-run description for three simulations with NorESM1-M (UNDER CONSTRUCTION)]
noresm:modeldeffiles:n_r99pdx [2022-05-31 09:29:32] (current)
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 ======  N_r99PDX  ====== ======  N_r99PDX  ======
  
-===== Model-run description for three simulations with NorESM1-M (UNDER CONSTRUCTION)=====+===== Model-run description for three simulations with NorESM1-M =====
  
 **Purpose of simulation:**  Estimate the effect of BC on global and Arctic climate **Purpose of simulation:**  Estimate the effect of BC on global and Arctic climate
  
 **Contact person:**         Alf Kirkevåg (alf.kirkevag@met.no) **Contact person:**         Alf Kirkevåg (alf.kirkevag@met.no)
 +
 +**Data owner:**             Alf Kirkevåg (alf.kirkevag@met.no) 
  
 **Revision Number:**        r99   **Revision Number:**        r99  
  
-**Production computer used:** Cray XT3 in Bergen (hexagon)+**Production computer used:** Cray XT in Bergen (hexagon)
  
 **Production date:**        October - November 2010  **Production date:**        October - November 2010 
  
-**Storage locations:**      NorStore (/norstore_osl/projects/NS2345K/noresm/cases/N_r99PDX) +**Storage locations:**      NorStore (/norstore_osl/projects/NS2345K/noresm/cases/N_r99PDX), where X = yr116, noBCyr116, noBCdepyr116  
  
 **Storage space:**          1500 Gb at NorStore  **Storage space:**          1500 Gb at NorStore 
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 **Spin-up period:**         116 years  **Spin-up period:**         116 years 
 +
 +**Initialisation:**         
  
 **Ensemble runs:**          No     **Ensemble runs:**          No    
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 **Emission year(s):**       2000 (aerosols and precursors), but BC emissions set to 0 for X = noBCyr116. For X = noBCdepyr116 BC emissions are for year 2000, but deposition of BC on snow and sea-ice is set to 0.       **Emission year(s):**       2000 (aerosols and precursors), but BC emissions set to 0 for X = noBCyr116. For X = noBCdepyr116 BC emissions are for year 2000, but deposition of BC on snow and sea-ice is set to 0.      
  
-**Emission inventories**    IPCC AR5  +**Emission inventories**    IPCC AR5, see references in [[http://www.geosci-model-dev.net/6/207/2013/gmd-6-207-2013.html|Kirkevåg et al. (2013)]] 
 + 
 +**Greenhouse gases:**       Prescribed concentrations (2000?
  
 **Frequency for output:**   Monthly (for atm, ocn and lnd) **Frequency for output:**   Monthly (for atm, ocn and lnd)
  
-**Active/changing forcing agents:**  Direct and indirect (1. & 2.) effects by anthropogenic SO4, POM and BC. The effects of all BC is found from the difference between the experiments (X =) yr116 and noBCyr116, and the effect of BC deposited on snow and sea-ice is found from the difference between (X =) yr116 and noBCdepyr116.+**Active/changing forcing agents:**  Direct and indirect (1. & 2.) effects by anthropogenic SO4, POM and BC. The effects of all BC is found from the difference between the experiments N_r99yr116 and N_r99noBCyr116, and the effect of BC deposited on snow and sea-ice is found from the difference between N_r99yr116 and N_r99noBCdepyr116. 
 + 
 +**Special considerations:** 
  
-**Tuning parameters which are changed relative to the host model CAM4:** +**Tuning parameters which are changed relative to the host model CCSM4:** 
  
 rhminl:  0.90        lower RH threshold for formation of low stratiform clouds (0.91 in CAM4)  rhminl:  0.90        lower RH threshold for formation of low stratiform clouds (0.91 in CAM4) 
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 r3lc:    14 um       critical mean droplet volume radius for onset of autoconversion (10 um in CAM4)  r3lc:    14 um       critical mean droplet volume radius for onset of autoconversion (10 um in CAM4) 
  
 +R_snw:   500 um      grain size of cold snow overlaying sea-ice (250 um in CICE4)
  
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