NICAM

Model description

NICAM is a non-hydrostatic icosahedral atmospheric model (Tomita and Satoh, 2004) with an explicit cloud microphysics scheme. The configuration used in the DYAMOND project is similar to that described by Kodama et al., 2015.

Contact:
Ryosuke Shibuya and Chihiro Kodama, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), JP

Data structure

Vertical

The number of vertical levels is 78, with increasing interval from the ground to the model top [csv]](nicam_zsdef78).

Horizontal

The horizontal grid spacing in the experiments was set to 3.5 km (GL11), 7.0 km (GL10), and 14 km (GL09).

Data access

Output variables are listed below (see the namelist file for technical details).

Land output, Output Interval: PT03H

Variable	Description	Type
ll_tg	soil temperature	Average
ll_wg	soil moisture	Average
ll_snw	snow amount	Average
ll_lai	leaf area index	Average
ll_rof	total runoff	Average
ll_rofl	runoff from each land layer	Average
ll_rofs	runoff by saturation excess	Average
ll_rofi	runoff by infiltration excess	Average
ll_rofo	runoff by surface storage overflow	Average
ll_rofb	runoff from base	Average
ll_tg	soil temperature	Snapshot
ll_wg	soil moisture	Snapshot
ll_snw	snow amount	Snapshot

Ocean output, Output Interval: PT15M

Variable	Description	Type
ol_sst	sea surface temperature	Average
ol_ice	sea ice mass	Average
ol_snow	snow on sea ice	Average
ol_ist	sea ice skin temperature	Average
ol_icr	sea ice concentration	Average
ol_gflx_adj	Q-flux	Average

ISCCP output, Output Interval: PT03H

Variable	Description	Type
dfq_isccp2	ISCCP cloud fraction	Average
dfq_isccp2	ISCCP cloud fraction	Snapshot

3D snapshot data, Output Interval: PT03H

Variable	Description	Type
ms_dh	diabatic heating rate	Snapshot
ms_u	velocity u	Snapshot
ms_v	velocity v	Snapshot
ms_w	velocity w	Snapshot
ms_tem	temperature	Snapshot
ms_qv	specific humidity	Snapshot
ms_rh	relative humidity	Snapshot
ms_pres	pressure	Snapshot
ms_qc	specific cloud water content	Snapshot
ms_qr	specific rain water content	Snapshot
ms_qi	specific cloud ice content	Snapshot
ms_qs	specific snow content	Snapshot
ms_qg	specific graupel content	Snapshot
ms_lwhr	diabatic heating rate by LW	Snapshot
ms_swhr	diabatic heating rate by SW	Snapshot

2D average output, Output Interval: PT15M

Variable	Description	Type
sl_cld_frac	cloud fraction	Average
sl_cldi	ice water path	Average
sl_cldw	liquid water path	Average
sl_evap	evaporation	Average
sl_slp	mean sea level pressure	Average
sl_slp_ecmwf	mean sea level pressure (ECMWF)	Average
sl_q2m	specific humidity at 2m	Average
sl_t2m	temperature at 2m	Average
sl_tem_atm	mass weighted atmospheric temperature	Average
sl_tem_sfc	skin temperature	Average
sl_u10m	velocity u at 10m	Average
sl_v10m	velocity v at 10m	Average
sl_vap_atm	precipitable water	Average
sl_tppn	precipitation	Average
sl_lwd_toa	downward LW at TOA	Average
sl_lwu_toa	upward LW at TOA	Average
sl_lwu_toa_c	upward LW (clear sky) at TOA	Average
sl_swd_toa	downward SW at TOA	Average
sl_swu_toa	upward SW at TOA	Average
sl_swu_toa_c	upward SW (clear sky) at TOA	Average
sl_lwd_sfc	downward LW at the surface	Average
sl_lwu_sfc	upward LW at the surface	Average
sl_swd_sfc	downward SW at the surface	Average
sl_swu_sfc	upward SW at the surface	Average
sl_lwd_sfc_c	downward LW (clear sky) at the surface	Average
sl_lwu_sfc_c	upward LW (clear sky) at the surface	Average
sl_swd_sfc_c	downward SW (clear sky) at the surface	Average
sl_swu_sfc_c	upward SW (clear sky) at the surface	Average
sl_lh_sfc	latent heat flux	Average
sl_sh_sfc	sensible heat flux	Average
sl_tppn_energy	other energy flux due to precipitation	Average
sl_evap_energy	other energy flux due to evaporation	Average
sl_albedo	surface albedo (inc. scattering)	Average
sl_tauu	surface stress in the longitudinal direction	Average
sl_tauv	surface stress in the latitudinal direction	Average

2D snapshots, Output Interval: PT15M

Variable	Description	Type
sl_tppn	precipitation	Snapshot
sl_cldi	ice water path	Snapshot
sl_cldw	liquid water path	Snapshot
sl_evap	evaporation	Snapshot
sl_slp	mean sea level pressure	Snapshot
sl_slp_ecmwf	mean sea level pressure (ECMWF)	Snapshot
sl_q2m	specific humidity at 2m	Snapshot
sl_t2m	temperature at 2m	Snapshot
sl_tem_sfc	skin temperature	Snapshot
sl_u10m	velocity u at 10m	Snapshot
sl_v10m	velocity v at 10m	Snapshot
sl_vap_atm	precipitable water	Snapshot
sl_lwu_toa	upward LW at TOA	Snapshot
sl_lwu_toa_c	upward LW (clear sky) at TOA	Snapshot
sl_swd_toa	downward SW at TOA	Snapshot
sl_swu_toa	upward SW at TOA	Snapshot
sl_swu_toa_c	upward SW (clear sky) at TOA	Snapshot
sl_lwd_sfc	downward LW at the surface	Snapshot
sl_lwu_sfc	upward LW at the surface	Snapshot
sl_swd_sfc	downward SW at the surface	Snapshot
sl_swu_sfc	upward SW at the surface	Snapshot
sl_lwd_sfc_c	downward LW (clear sky) at the surface	Snapshot
sl_lwu_sfc_c	upward LW (clear sky) at the surface	Snapshot
sl_swd_sfc_c	downward SW (clear sky) at the surface	Snapshot
sl_swu_sfc_c	upward SW (clear sky) at the surface	Snapshot
sl_lh_sfc	latent heat flux	Snapshot
sl_sh_sfc	sensible heat flux	Snapshot
sl_taucl	optical depth of liquid water	Snapshot
sl_tauci	optical depth of ice water	Snapshot
sl_tauc	optical depth of cloud water	Snapshot
sl_taur	optical depth of rain water	Snapshot
sl_taui	optical depth of cloud ice	Snapshot
sl_taus	optical depth of snow	Snapshot
sl_taug	optical depth of graupel	Snapshot
sl_albedo	surface albedo (incl. scattering)	Snapshot
sl_albedo_sfc	surface albedo (direct, vis)	Snapshot
sl_albedo_sfc2	surface albedo (direct, nir)	Snapshot
sl_albedo_sfc3	surface albedo (direct, ir)	Snapshot
sl_albedo_sfc4	surface albedo (diffuse, vis)	Snapshot
sl_albedo_sfc5	surface albedo (diffuse, nir)	Snapshot
sl_albedo_sfc6	surface albedo (diffuse, ir)	Snapshot

Initialisation and Boundary conditions

Soil Initialisation

Initial soil data are derived from the equilibrium state in the climatological run by NICAM with a coarser resolution.

Input Data, SST and Sea Ice

Same as the description for ICON.