wiki:BGCtoBGC
Last modified 6 years ago Last modified on 10/04/12 17:06:01

CESM Biogeochemistry model variables used for microbes

http://www.cesm.ucar.edu/CMIP5/forcing_information/

ESG Collections

We use the experiments where the BGC model is on but CO2 levels in atmosphere are prescribed.

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.piControl.mon.ocnBgchem.Omon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.historical.mon.ocnBgchem.Omon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.rcp45.mon.ocnBgchem.Omon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.rcp85.mon.ocnBgchem.Omon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.historical.mon.land.Lmon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.piControl.mon.land.Lmon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.rcp85.mon.land.Lmon.r1i1p1.html

http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.rcp45.mon.land.Lmon.r1i1p1.html

Time

pre-industrial: 500 year control run with constant 1850 forcing. 6,000 months of data for each variable.

historial: 156 years from 1850 to 2005. 1,872 months. Forced with observed CO2 and other forcings.

rcp45: 95 years from 2006 to 2100 with increasing CO2. 1140 months.

rcp85: 95 years from 2006 to 2100 with increasing CO2. 1140 months.

Data sizes

Most variables are 2D and all time values are in one file.

3D variables are split up into files that are less than 2GB in size.

e.g. mrlsl: soil moisture at each of 15 depth levels

total data size:
188GB

  • historical: 36GB
  • preindustrial: 108GB
  • rcp45: 22GB
  • rcp85: 22GB

Ocean Variables

Translate ocean BGC variables from old ScidAC2 test run to CESM CMIP5 data.

SciDAC2
cmip5

Most located in "model realm=ocnBgchem"

NH4 "Dissolved Ammonia" "mmol/m3"
nh4 "Dissolved Ammonium Concentration at Surface" "mol/m
3"

NO3 "Dissolved Inorganic Nitrate" "mmol/m3"
no3 "Dissolved Nitrate Concentration at Surface" "mol/m
3"

O2 "Dissolved Oxygen" "mmol/m3"
o2 "Dissolved Oxygen Concentration at Surface" "mol/m
3"

SiO3 "Dissolved Inorganic Silicate" "mmol/m3"
si "Dissolved Silicate Concentration at Surface" "mol/m
3"

diatChl "Diatom Chlorophyll" "mg/m3"
chldiat "Diatom Chlorophyll Mass Concentration at Surface" "kg/m
3"

diazChl "Diazotroph Chlorophyll" "mg/m3"
chldiaz "Mass Concentration of Diazotrophs expressed as Chlorophyll in Sea Water at Surface" 'kg/m
3"

spChl "Small phytoplankton Chlorophyll" "mg/m3"
chlpico "Mass Concentration of Picophytoplankton expressed as Chlorophyll in Sea Water at Surface" "kg/m
3"

DIC "Dissolved Inorganic Carbon" "mmol/m3"
dissic "Dissolved Inorganic Carbon Concentration at Surface" "mol/m
3"

DOC "Dissolved Organic Carbon" "mmol/m3"
dissoc "Dissolved Organic Carbon Concentration at Surface" "mol/m
3"

Rest are in corresponding collections such as http://www.earthsystemgrid.org/dataset/cmip5.output1.NSF-DOE-NCAR.CESM1-BGC.piControl.mon.ocean.Omon.r1i1p2.html

SALT "Salinity" "gram/kilogram"
sos "Sea Surface Salinity" "psu"

TEMP "Potential Temperature" "degC"
tos "Sea Surface Temperature "K"

SFH_QSW "Solar Short-Wave Heat Flux" "watt/m2"
rsntds "Net Downward Shortwave Radiation at Sea Water Surface" "W/m
2"

NOT AVAILABLE

DOFe"Dissolved Organic Iron" "mmol/m3"
DOFe is output by the model but not included in the CMIP5 data released on ESG.
("dfe" in CMIP5 is inorganic iron)

DON "Dissolved Organic Nitrogen" "mmol/m3"
("phyn" in CMIP5 is N in living matter)

DOP "Dissolved Organic Phosphorus" "mmol/m3" ("phyp" in CMIP5 is P in living matter)

BUT DOC = dissoc
and DON = 0.137 * DOC
and DOP is almost equal to DOC/117. (According to Keith Lindsey, NCAR)

DMSP "DiMethyl? SulfiPropitionate?" "mmol/m3"
NOT AVAILABLE in CMIP5 runs.

Land Variables

mrso

Description: Total Soil Moisture Content

tsl

Description: Temperature of Soil

cSoilFast

Description: Carbon Mass in Fast Soil Pool

cSoilMedium

Description: Carbon Mass in Medium Soil Pool

mrfso

Description: Soil Frozen Water Content

burntArea

Description: Burnt Area Fraction

cCwd

Description: Carbon Mass in Coarse Woody Debris

cSoil

Description: Carbon Mass in Soil Pool

cVeg

Description: Carbon Mass in Vegetation

cLeaf

Description: Carbon Mass in Leaves