Differences

This shows you the differences between two versions of the page.

--- noresm:modeldeffiles:n_r99pdx [2014-04-03 09:20:33]
alfk [Model-run description for three simulations with NorESM1-M (UNDER CONSTRUCTION)]
+++ noresm:modeldeffiles:n_r99pdx [2022-05-31 09:29:32] (current)
@@ Line 1: / Line 1: @@
 ======  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
 **Contact person:**         Alf Kirkevåg (alf.kirkevag@met.no)
+**Data owner:**             Alf Kirkevåg (alf.kirkevag@met.no)
 **Revision Number:**        r99
-**Production computer used:** Cray XT3 in Bergen (hexagon)
+**Production computer used:** Cray XT in Bergen (hexagon)
 **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
@@ Line 25: / Line 27: @@
 **Simulation name(s):**     N_r99PDX, where X = yr116, noBCyr116, noBCdepyr116
-**Compset name used:**      NF_2006-2008_AER_AMIP_OBS
+**Compset name used:**      NAER2000
-**Model type:**             Stand-alone cam (atmosphere) default with prescribed ocn/ice (ocean and sea-ice)
+**Model type:**             Fully coupled
-**Type of run:**            Branch
+**Type of run:**            Initial
-**Simulation period:**      3 years
+**Simulation period:**      92 years
-**Spin-up period:**         0 years in the branch run itself, but continued from 1979-2005
+**Spin-up period:**         116 years
+**Initialisation:**
 **Ensemble runs:**          No
-**Resolution:**             f19_f19 = 1.8x2.5
+**Resolution:**             f19_g19 = 1.8x2.5
+**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):**       2006 - 2008 (aerosols and precursors)
+**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)]]
-**Emission inventories**    RCP8.5 from IPCC AR5
+**Greenhouse gases:**       Prescribed concentrations (2000?)
-**Frequency for output:**    Monthly
+**Frequency for output:**   Monthly (for atm, ocn and lnd)
-**Active/changing forcing agents:**  In principle, direct and indirect (1. & 2.) effects by anthropogenic SO4, POM and BC, but aerosols were run offline (CAM4-Oslo aerosols do not affect the model meteorology, only prescribed aerosols and CDNC from CAM4 )
+**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)
@@ Line 56: / Line 63: @@
 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)