[3] CCSM3 configurations for LGM and orbital forcing

(1) CCSM3 experiment case name: b30.100 (unavailable)

General description: T42x1 Preindustrial (PMIP-2 simulation)

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = 1950
  • co2vmr = 2.80000e-4 (280 ppmv)
  • ch4vmr = 7.60000e-7 (760 ppbv)
  • n20vmr = 2.70000e-7 (270 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_SO4_64x128_clim_c040224.nc (10 year average from b30.020; T85 1870)
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions

  • branch from b30.004, year 300 (present-day control, T42x1)

Years of Run: 1 to 450

 

(2) CCSM3 experiment case name: b30.101 (unavailable)

General description: T42x1 Holocene 6 kyr BP (PMIP-2 simulation)

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = -4050 (relative to 1950: 1950-6000)
  • co2vmr = 2.80000e-4 (280 ppmv)
  • ch4vmr = 6.50000e-7 (650 ppbv)
  • n20vmr = 2.70000e-7 (270 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_SO4_64x128_clim_c040224.nc (10 year average from b30.020; T85 1870)
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions

  • branch from b30.100.ES01, year 100 (1780 control, T42x1)

Years of Run:  1 to 432

 

(3) CCSM3 experiment case name: b30.104 series (unavailable)

General description: T42x1 Last Glacial Maximum 21 kyr BP (PMIP-2 simulation)

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = -19050 (relative to 1950: 1950-21000)
  • co2vmr = 1.85000e-4 (185 ppmv)
  • ch4vmr = 3.50000e-7 (350 ppbv)
  • n20vmr = 2.00000e-7 (200 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

 

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_SO4_64x128_clim_c040224.nc (10 year average from b30.020; T85 1870)
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)
  • topography & ice sheet = ICE-5G
  • coastline = ICE-5G, corresponding to ~120 m lowering of sea level
  • bathymetry = Present day except ~120 m raised sills: Strait of Gibraltor and Denmark Strait

 

b30.104    from the 0 to 299 model year (by Otto-Bliesner);

b30.103w   runs to the 399 model year after correcting LGM wetland (by Nan Rosenbloom); b30.104w.ac7  0.1Sv hosting experiment (yrs 401-499 forcing, yrs 500-599 recovery)

b30.104w.ac7c  0.1Sv hosting experiment (yrs 401-499 forcing, yrs 500-650 forcing continued)

 

Initial Conditions

  • ocean = 3D pot temp and salinity anomalies from Shin et al. 2003 on PI
  • sea ice = from present day
  • 104 was branched from b30.100.ES01, year 100 (PI 1780 control, T42x1);
  • 104w was branched from b30.104, year 300 (PI 1780 control, T42x1)
  • 104w.ac7 was hybrid from b30.104w, year 400 (PI 1780 control, T42x1); b30.104w.ac7c was hybrid from b30.104w.ac7, year 490 (PI 1780 control, T42x1)

 

(4) CCSM3 experiment case name: b30 or 21kice  by Wang Yue (163wangyue@163.com)

General description: T42x1 Last Glacial Maximum 21 kyr BP (PMIP-2 simulation) but with modern GHG and Orbital Parameters

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = 1950
  • co2vmr = 2.80000e-4 (280 ppmv)
  • ch4vmr = 7.60000e-7 (760 ppbv)
  • n20vmr = 2.70000e-7 (270 ppbv)

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_SO4_64x128_clim_c040224.nc (10 year average from b30.020; T85 1870)
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)
  • topography & ice sheet = ICE-5G
  • coastline = ICE-5G, corresponding to ~120 m lowering of sea level
  • bathymetry = Present day except ~120 m raised sills: Strait of Gibraltor and Denmark Strait

Initial Conditions: branched from b30.104w, year 400 (PI 1780 control, T42x1)

Model Years of Run: 401 to 599 (the last 100 model years available);

 

(5) CCSM3 experiment case name: 21korb  by Wang Yue (163wangyue@163.com)

General description: T42x1 Preindustrial (PMIP-2 simulation) with LGM orbital parameters

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = -19050 (relative to 1950: 1950-21000)
  • co2vmr = 2.80000e-4 (280 ppmv)
  • ch4vmr = 7.60000e-7 (760 ppbv)
  • n20vmr = 2.70000e-7 (270 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_SO4_64x128_clim_c040224.nc (10 year average from b30.020; T85 1870)
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions: cami_0000-09-01_64x128_L26_c030918.nc

Model Years of Run: 0-200 (the last 100 model years available);

 

(6) CCSM3 experiment case name: ccsmghg   by Wang Yue (163wangyue@163.com)

General description: T42x1 Preindustrial (PMIP-2 simulation) with LGM GHG

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = 1950
  • co2vmr = 1.85000e-4 (185 ppmv)
  • ch4vmr = 3.50000e-7 (350 ppbv)
  • n20vmr = 2.00000e-7 (200 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_SO4_64x128_clim_c040224.nc (10 year average from b30.020; T85 1870)
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions: cami_0000-09-01_64x128_L26_c030918.nc

Model Years of Run: 0-200 (the last 100 model years available);

 

(7) CCSM3 experiment case name: b30.105 (unavailable)

General description: T31x3 Preindustrial (PMIP-2 simulation)

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = 1950
  • co2vmr = 2.80000e-4 (280 ppmv)
  • ch4vmr = 7.60000e-7 (760 ppbv)
  • n20vmr = 2.70000e-7 (270 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_48x96_clim_c040525.nc
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions

  • branch from b30.031, year 360 (present-day control, T31x3)

Years of Run: 433

 

(8) CCSM3 experiment case name: b30.106 by Ian Eisenman (unavailable)

General description: T31x3 Last Glacial Maximum 21 kyr BP

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = -19050 (relative to 1950: 1950-21000)
  • co2vmr = 1.85000e-4 (185 ppmv)
  • ch4vmr = 3.50000e-7 (350 ppbv)
  • n20vmr = 2.00000e-7 (200 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_1870_48x96_clim_c040525.nc
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)
  • topography = ICE-5G
  • ice sheet = ICE-5G
  • coastline = ICE-5G, corresponding to ~120 m lowering of sea level
  • bathymetry = Present day except ~120 m raised sills: Strait of Gibraltor and Denmark Strait

Initial Conditions

  • branch from b30.105, year 100 (Preindustrial, T31x3)

Years of Run: 500

 

(9) CCSM3 experiment case name: modern   by Wang Yue (163wangyue@163.com)

General description: T31x3 Present day (Composet=B)

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = 1990 (orb_mvelp =102.7242, orb_eccen=0.0167, orb_obliq=23.441)
  • co2vmr = 3.55000e-4 (355 ppmv)
  • ch4vmr = 17.14000e-7 (1714 ppbv)
  • n20vmr = 3.1100e-7 (311 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_48x96_clim_c031029.nc
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions: cami_0000-09-01_48x96_T31_L26_c030918.nc

Model Years of Run: 315 (last 100 model years available);

 

(10) CCSM3 experiment case name: orbital   by Wang Yue (163wangyue@163.com)

General description: T31x3 (Composet=B) with transient accelerated orbital forcing

Forcings

  • scon = 1.36500e+6 (solar constant = 1365.0 W/m^2)
  • orb_year = transient from –44150 (relative to 1950: 1950-46100) to 1950
  • co2vmr = 3.50000e-4 (350 ppmv)
  • ch4vmr = 17.14000e-7 (1714 ppbv)
  • n20vmr = 3.1100e-7 (311 ppbv)
  • f11vmr = 0.0
  • f12vmr = 0.0

Boundary Conditions

  • ozone = mozart.o3.128x64_L18_1870cyc_c040123.nc
  • sulfates = AerosolMass_V_48x96_clim_c031029.nc
  • dust & sea salt = present day prescribed
  • carscl = 0.30 (carbonaceous aerosol scaling)

Initial Conditions: cami_0000-09-01_48x96_T31_L26_c030918.nc

Model Years of Run: 0-461 (the last 459 Model years available)