4.1.2. Namelist NAM_ISBA
Fortran name | Fortran type | values | default value |
NPATCH | integer | between 1 and 19 | 1 |
CISBA | character (LEN=3) | '2-L', '3-L', 'DIF' | '3-L' |
CPHOTO | string of 3 characters | 'NON', 'AST', 'NIT', 'NCB' | 'NON' |
LTR_ML | logical | F | |
XRM_PATCH | real | > 0. and < 1. | 0. |
CPEDO_FUNCTION | string of 4 characters | 'CH78', 'C084' | 'CH78' |
NGROUND_LAYER | integer | >0 | 1E+9 |
XUNIF_CLAY | real | between 0 and 1 | 0.33 |
YCLAY | character (LEN=28) | ' ' | |
YCLAYFILETYPE | character (LEN=6) | 'DIRECT', 'BINLLF','BINLLV', 'ASCLLV' | none |
XUNIF_SAND | real | between 0 and 1 | 0.33 |
YSAND | character (LEN=28) | ' ' | |
YSANDFILETYPE | character (LEN=6) | 'DIRECT', 'BINLLF','BINLLV', 'ASCLLV' | none |
XUNIF_RUNOFFB | real | 0.5 | |
YRUNOFFB | character (LEN=28) | ' ' | |
YRUNOFFBFILETYPE | character (LEN=6) | 'DIRECT', 'BINLLF','BINLLV', 'ASCLLV' | none |
XUNIF_WDRAIN | real | 0. | |
YWDRAIN | character (LEN=28) | ' ' | |
YWDRAINFILETYPE | character (LEN=6) | 'DIRECT', 'BINLLF','BINLLV', 'ASCLLV' | none |
YCTI | character (LEN=28) | ' ' | |
YCTIFILETYPE | character (LEN=6) | 'DIRECT' | none |
XUNIF_SOC_TOP | real | 1.E+20 | |
XUNIF_SOC_SUB | real | 1.E+20 | |
YSOC_TOP | character (LEN=28) | ' ' | |
YSOC_SUB | character (LEN=28) | ' ' | |
YSOCFILETYPE | character (LEN=6) | 'DIRECT', 'BINLLF','BINLLV', 'ASCLLV' | none |
XUNIF_PERM | real | 1.E+20 | |
YPERM | character (LEN=28) | ' ' | |
YPERMFILETYPE | character (LEN=28) | ' ' | |
XUNIF_PH | real | 1.E+20 | |
YPH | character (LEN=28) | ' ' | |
YPHFILETYPE | character (LEN=28) | ' ' | |
XUNIF_FERT | real | 1.E+20 | |
YFERT | character (LEN=28) | ' ' | |
YFERTFILETYPE | character (LEN=28) | ' ' | |
LIMP_SAND | logical | F | |
LIMP_CLAY | logical | F | |
LIMP_CTI | logical | F | |
LIMP_SOC | logical | F | |
LIMP_PERM | logical | F | |
XSOILGRID | real(150) | 1.E+20 | |
CALBEDO | string of 4 characters | 'MEAN', 'DRY ', 'WET ', 'EVOL','CM13' | 'DRY ' |
LMEB | logical | .FALSE. |
- NPATCH : number of patches used in ISBA. One patch corresponds to aggregated parameters. 12 patches correspond to separate energy budgets for all vegetation types present in ISBA. 3 patches correspond to bare soil types, low vegetation, trees. If CPHOTO equals 'NON' any number of patches between 1 and 12 is possible, for the other values of CPHOTO, 12 patches are required. The order and the signification of each patch is the following:
- 1: no vegetation (smooth) - NO
- 2: no vegetation (rocks) - ROCK
- 3: permanent snow and ice - SNOW
- 4: temperate broadleaf cold-deciduous summergreen - TEBD (TREE)
- 5: boreal needleleaf evergreen - BONE (CONI)
- 6: tropical broadleaf evergreen - EVER
- 7: C3 cultures types - C3
- 8: C4 cultures types - C4
- 9: irrigated crops - IRR
- 10: grassland (C3) - GRAS
- 11: tropical grassland (C4) - TROG
- 12: peat bogs, parks and gardens (irrigated grass) - PARK
- 13: tropical broadleaf deciduous - TRBD (TREE)
- 14: temperate broadleaf evergreen - TEBE (TREE)
- 15: temperate needleleaf evergreen - TENE (CONI)
- 16: boreal broadleaf cold-deciduous summergreen - BOBD (TREE)
- 17: boreal needleleaf cold-deciduous summergreen - BOND (CONI)
- 18: boreal grass - BOGR (GRASS)
- 19: shrub - SHRB (TREE)
- CISBA: type of soil discretization and physics in ISBA:
- '2-L' : force-restore method with 2 layers for hydrology
- '3-L' : force-restore method with 3 layers for hydrology
- 'DIF' : diffusion layer, with any number of layers
- CPHOTO:type of photosynthesis physics. The following options are currently available:
- "NON" : none is used. Jarvis formula is used for plant transpiration.
- "AST" : ISBA-AGS with offensive/defensive stress, without evolving Leaf Area Index
- "NIT" : ISBA-AGS with nitrogen, with evolving Leaf Area Index
- "NCB" : ISBA-AGS with nitrogen, with evolving Leaf Area Index and wood, soil, roots biomass
- LTR_ML: to activate new radiative transfert calculation, only if CPHOTO/=NON.
- XRM_PATCH : threshol to remove little fractions of patches
- CPEDO_FUNCTION: Pedo-transfert function for DIF. The following options are currently available:
- "CH78" : Clapp and Hornberger 1978 for BC
- "C084" : Cosby et al. 1988 for BC
- NGROUND_LAYER : number of soil layer used in case of diffusion physics in the soil (CISBA = 'DIF'):
- with CISBA = 2-L, NGROUND_LAYER default is 2
- with CISBA = 3-L, NGROUND_LAYER default is 3
- with CISBA= DIF and LECOCLIMAP, NGROUND_LAYER default is 14
- XUNIF_CLAY : uniform prescribed value of clay fraction.
- YCLAY: clay fraction data file name.
- YCLAYFILETYPE: type of clay data file ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV')
- XUNIF_SAND : uniform prescribed value of sand fraction.
- YSAND: sand fraction data file name.
- YSANDFILETYPE: type of sand data file ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV')
- XUNIF_RUNOFFB: uniform prescribed value of subgrid runoff coefficient.
- YRUNOFFB: subgrid runoff coefficient data file name.
- YRUNOFFBFILETYPE: type of subgrid runoff data file ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV')
- XUNIF_WDRAIN: uniform prescribed value of subgrid drainage.
- YWDRAIN: subgrid drainage data file name.
- YWDRAINFILETYPE: type of subgrid drainage data file ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV')
- YCTI: topographic indices file name.
- YCTIFILETYPE: type of topographic file ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV')
- XUNIF_SOC_TOP: uniform prescribed value of topsoil organic carbon (used only in CSOC=SGH in NAM_ISBAn)
- XUNIF_SOC_SUB: uniform prescribed value of subsoil organic carbon (used only in CSOC=SGH in NAM_ISBAn)
- YSOC_TOP: organic carbon topsoil data file name (used only in CSOC=SGH in NAM_ISBAn).
- YSOC_SUB: organic carbon subsoil data file name (used only in CSOC=SGH in NAM_ISBAn).
- YSOCFILETYPE: type of organic matter data file ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV') (used only in CSOC=SGH in NAM_ISBAn)
- XUNIF_PERM : uniform value of permafrost distribution (used only if CISBA=DIF)
- YPERM: file name for permafrost distribution (used only if CISBA=DIF)
- YPERMFILETYPE: permafrost distribution data file type('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV') (used only if CISBA=DIF)
- XUNIF_PH : uniform value of soil pH (used only if LCH_NO_FLUX=T)
- YPH: file name for soil pH (used only if LCH_NO_FLUX=T)
- YPHFILETYPE: soil pH data file type ('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV') (used only if LCH_NO_FLUX=T)
- XUNIF_FERT : uniform value of soil fertilization rate (kgN/ha/h) (used only if LCH_NO_FLUX=T)
- YFERT: file name for soil fertilisation rate (kgN/ha/h) (used only if LCH_NO_FLUX=T)
- YFERTFILETYPE: soil fertilisation rate file type (kgN/ha/h)('DIRECT', 'BINLLF', 'BINLLV', 'ASCLLV') (used only if LCH_NO_FLUX=T)
- LIMP_SAND: reads sand fraction in an existing PGD file
- LIMP_CLAY: reads clay fraction in an existing PGD file
- LIMP_CTI: reads topographic indices in an existing PGD file
- LIMP_SOC: reads organic carbon in an existing PGD file
- LIMP_PERM: reads permafrost distribution in an existing PGD file
- XSOILGRID: uniform soil depth grid for CISBA=DIF. Default with CISBA=DIF and LECOCLIMAP is (/0.01,0.04,0.10,0.20,0.40,0.60,0.80,1.00,1.50,2.00,3.00,5.00,8.00,12.0/)
- CALBEDO: type of bare soil albedo. The following options are currently available:
- "DRY " : dry bare soil albedo
- "WET " : wet bare soil albedo
- "MEAN" : albedo for bare soil half wet, half dry
- "EVOL" : albedo of bare soil evolving with soil humidity
- "CM13" : albedo by cover and vegetation type processed from satellite data
- LMEB: Flag to activate MEB (please note that by default, MEB uses the TR_LM radiation scheme, so when LMEB=T, LTR_ML=T automatically)