Component Models
Atmosphere - NAVGEM-T0359L50 (~37 km resolution and 50 vertical levels)
Ocean - HYCOM-0.08 deg; 41 vertical layers
Sea Ice - CICEv4-0.08 deg
Land - inline NAVGEM T0359 (~37 km)
Initial conditions for hindcasts:
Atmosphere - from atmosphere data assimilation system
Ocean/Sea Ice - ocean/ice reanalysis at the same resolution
Land - Initialized from the Agricultural Meteorological Modeling System (AGRMET)
Hindcast period - 1999-2015 with 4 ensemble members.
Hindcast/forecast length - 45 days
Ensemble generation - time-lagged
Hogan, T., and Coauthors, 2014: The Navy Global Environmental Model. Oceanography, 27, 116-125.
Component Models
Atmosphere: GOES-5 - 1/2 degree horizontal resolution, 72 vertical layers (Rienecker et al. 2008; Molod et al. 2012)
Ocean: MOM5 - 1/2 degree horizontal resolution, 40 vertical layers (Griffies 2012)
Land: Catchment land surface model (Koster et al. 2000)
Sea Ice: Los Alamos Sea Ice model (CICE) (Hunke and Lipscomp 2008)
Initial conditions for hindcasts:
Atmosphere - MERRA2
Ocean/Sea Ice - GMAO's ocean analysis
Land - MERRA-2 precipitation corrected fields (Reichle et al. 2014)
*For real-time forecasts, initialization will be from GEOS-5's real-time forward processing analysis.
Hindcast period - 1981-2015 with 10 ensemble members.
Hindcast/forecast length - 45 days
Ensemble generation - perturbations generated using simple scaled difference of two consecutive days of analysis.
Hunke, E.C., and W.H. Lipscomb, 2008: CICE: The Los Alamos Sea Ice Model, Documentation and Software User's Manual, Version 4.0. Tech. Rep. LA-CC-06-012, Los Alamos National Laboratory, Los Alamos, NM. [Available online at: http://climate.lanl.gov/Models/CICE].
Component Models
Atmosphere - GEFS T574(~33km)L64 for 0-8 day and T382 (~55km) for 8-35 day
Ocean/Sea Ice - N/A
Land - T574(~33km)
Initial conditions for hindcasts:
Atmosphere - from atmosphere data assimilation system
Ocean/Sea Ice - N/A
Land - from global data assimilation system (GDAS)
Hindcast period - 1999-2015 with 20 ensemble members.
Hindcast/forecast length - 35 days
Ensemble generation - EnKF & ETR
Zhou, X., Y. Zhu, D. Hou, and Kleist, 2016a: A comparison of perturbations from an ensemble transform and Ensemble Kalman Filter for the NCEP Global Ensemble Forecast System. Weather and Forecasting, accepted.
Zhou, X., Y. Zhu, D. Hou, Y. Luo, J. Peng and R. Wobus, 2016b: The NCEP Global Ensemble Forecast System with the EnKF Initialization. Submitted to MWR.
Hou, D., Z. Toth, Y. Zhu, W. Yang and R. Wobus, 2012: A Stochastic Total Tendency Perturbation Scheme Representing Model- Related Uncertainties in the NCEP Global Ensemble Forecast System, Submitted to Tellus-A)
Component Models
Atmosphere - GFS T126L64
Ocean/Sea Ice - MOM4L40 0.25deg EQ; 0.5 global
Land - NOAH
Initial conditions for hindcasts:
Atmosphere - CFSR
Ocean/Sea Ice - CFSR
Land - GLDAS
Hindcast period - 1999-2010 4 members/day
Hindcast/forecast length - 45 days
Ensemble generation - Time-lagged, 06, 12, 18Z each day
Component Models
Atmosphere - 0.45x0.45 deg; 40 levels
Ocean/Sea Ice - N/A
Land - Offline SPS forced by ERA-Interim
Initial conditions for hindcasts:
Atmosphere - ERA Interim (hindcast)
Ocean/Sea Ice - N/A
Land - ERA-Interim
Hindcast period - 1999-2014 4 members
Hindcast/forecast length - 32 days
Ensemble generation - random isotropic perturbation
Component Models
Atmosphere - 0.9x1.25deg; L26
Ocean/Sea Ice - POPL60 1deg global w/0.25 res in deep tropics
Land - same as Atm
Initial conditions for hindcasts:
Atmosphere - xx
Ocean/Sea Ice - xx
Land -xx
Hindcast period - 1999-2015 with 3 or 4 members per day
Hindcast/forecast length - 45 days
Ensemble generation - time-lagged
Component Models
Atmosphere - ~60km; 64 levels
Ocean/Sea Ice - iHYCOM 60km
Land - NOAH land sfc model
Initial conditions for hindcasts:
Atmosphere - CFSR
Ocean/Sea Ice - CFSR
Land - CFSR
Hindcast period - 1999-2014 with 4 per week
Hindcast/forecast length - 32 days
Ensemble generation - time-lagged; 12Z & 18Z Tues; 00Z & 06Z Wed