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EMC > NAM >
NAM/HIRESW
Mesoscale Branch NAM Parallel Home Page

Mesoscale Branch NAM Parallel Home Page

Old Mesoscale Branch Parallel Web Page

Parallel Experiment Name Slot Cntrl Start date End date Implementation date
NEMS/NMMB NAM parallel test NAMX NAMB until 18z 1/29/2013, ops NAM thereafter 2012/04/21/12Z 2014/08/12/06Z 2014/08/12/12Z
NEMS/NMMB NAM parallel test NAMB NAMX until 06Z 10/18/2011, Ops NAM until 18z 1/29/2013, NAMX thereafter 2011/08/08/12Z 2014/03/10/00Z 2014/08/12/12Z
NEMS/NMMB NAM parallel test NAMZC Ops NAM 2013/03/24/00Z 2013/07/25/00Z 2014/08/12/12Z
NEMS/NMMB NAM parallel test NAMZ Ops NAM until 12z 9/5/2012, NAMX thereafter 2012/06/18/12Z 2013/07/25/00Z 2014/08/12/12Z
NEMS/NMMB NAM parallel test, w/nested NMMB parallel NAMX
AKNESTX, CONUSNESTX (starting 12z 5/17/2010),
HAWAIINESTX, PRICONESTX (starting 12z 7/14/2010)
NAMB until 00z 3/23/2011, Ops NAM thereafter 2009/12/01/12Z 2011/10/18/06Z 2011/10/18/12Z
NEMS/NMMB NAM parallel test NAMB Operational NAM 2009/07/29/18Z 2011/03/23/00Z 2011/10/18/12Z
NAM parallel with assorted bug fixes NAMX NCO NAM run on cirrus until 8/11/2009, operational NAM thereafter 2009/02/10/00Z 2009/10/09/12Z (date 84-h 00z/12z forecast turned off; NDAS will still run until implementation) 2009/11/03/18Z
NAM Fall 2008 Change Package (NCO real-time parallel) NAMX ops NAM 2008/10/01/00Z 2008/12/16/06Z 2008/12/16/12Z
North American WRF-NMM with various physics and/or analysis changes NAMY NAMEXP until 00z 3/31/2008, ops NAM thereafter 2007/12/18/12Z 2008/10/08/12Z All changes except TAMDAR data and partial cycling implemented at 12z 3/31/2008, partial cycling and other changes implemented 12z 12/16/2008
North American WRF-NMM with various physics and/or analysis changes NAMX NAMEXP until 00z 8/12/08, NAMY thereafter 2008/07/14/12Z 2008/09/16/12Z 2008/12/16/12Z
North American WRF-NMM with various physics and/or analysis changes NAMR NAMY 2008/07/01/12Z 2008/08/01/00Z
North American WRF-NMM with use of GDAS first guess for on-time GSI analysis NAMR NAMY, ops NAM 2008/05/21/00Z 2008/07/01/00Z
North American WRF-NMM with various physics and/or analysis changes NAMEXP Ops NAM, NAMY (from 12z 7/14) 2008/03/31/18Z 2008/08/12/00Z 2008/12/16/12Z
North American WRF-NMM with expanded integration domain and various physics and/or analysis changes; real-time NCO NAM parallel NAMX Ops NAM 2008/01/12/00Z 2008/03/31/06Z 2008/03/31/12Z
North American WRF-NMM with various physics and/or analysis changes NAMR NAMY 2007/08/28/12Z 2007/12/05/00Z
North American WRF-NMM with 20% reduction of raob data in the stratosphere NAMR Ops NAM 2007/06/13/00Z 2007/08/08/12Z
North American WRF-NMM with expanded integration domain and various physics and/or analysis changes NAMEXP Ops NAM until 12z 2/25/2008, NAMX thereafter 2007/04/19/00Z 2008/03/31/00Z Two WRF-NMM model changes (roughness length for heat and change to the minimum canopy resistance for evergreen and mixed forest) were implemented into the ops NDAS/NAM on 6/19/2007
All other changes except for TAMDAR data implemented at 12z 3/31/2008
North American WRF-NMM with various physics and/or analysis changes NAMX Ops NAM 2006/10/24/00Z 2007/06/25/12Z
North American WRF-NMM with various physics and/or analysis changes NAMY Ops NAM 2006/12/21/00Z 2007/12/18/00Z Two WRF-NMM model changes (roughness length for heat and change to the minimum canopy resistance for evergreen and mixed forest) were implemented into the ops NDAS/NAM on 6/19/2007
North American WRF-NMM various analysis and/or physics changes NAMX Parallel Ops NAM run on mist 2006/10/24/00Z 2007/01/22/12Z
North American WRF-NMM with fully cycled land-states, 2 mb model top pressure, various experimental tests NAMY NAMX until 00Z 20 June 2006, Ops NAM thereafter 2006/03/02/00Z 2006/12/19/12z 2006/06/20/12Z (WRF-NMM and GSI implemented into production NAM)
2006/12/19/12Z (Divergence damping, BMJ convection, microphyiscs, and horizontal diffusion changes implemented into production NAM)
North American WRF-NMM with fully cycled land-states and 2 mb model top pressure NAMX Ops NAM 2005/10/27/00Z 2006/06/20/06Z 2006/06/20/12Z
North American WRF-NMM with fully cycled land-states, 2 mb model top pressure NAMY Ops NAM, NAMX 2005/11/04/12Z 2006/01/11/12Z 2006/06/20/12Z
North American WRF-NMM with fully cycled land-states NAMXF Ops NAM 2005/08/30/12Z 2005/11/04/00Z 2006/06/20/12Z
North American WRF-NMM with ops NAM land states, terrain, z0 NAMX Ops NAM 2005/05/26/12Z 2005/10/26/12Z 2006/06/20/12Z
Eta-32 with winter 2005 ops Eta change package and experimental changes to ops radiation ETAL ETAY 2004/11/17/12Z 2004/12/13/12Z 2005/05/03/12Z
NAM-12 and DGEX with winter 2005 ops NAM change package NAMX Operational NAM-12 2004/11/01/12Z for NAM, 2005/1/2/00z for DGEX 2005/05/03/00Z 2005/05/03/12Z
Eta-32 with winter 2005 ops Eta change package and experimental changes to GFS radiation and/or cloud microphysics ETAW ETAL 2004/09/24/12Z 2004/11/17/12Z 2005/05/03/12Z
Eta-32 with assimilation of surface temperature data ETAW ETAV 2004/09/09/12Z 2004/09/24/00Z 2005/05/03/12Z
Eta-32 with winter 2005 ops Eta change package and experimental changes to GFS radiation and/or cloud microphyiscs ETAL ETAY 2004/09/09/12Z 2004/10/25/12Z 2005/05/03/12Z
Eta-32 with winter 2005 ops Eta change package ETAY ETAV 2004/08/23/12Z 2005/01/24/12Z 2005/05/03/12Z
Eta-32 with modified shallow convection parameterization ETAW ETAV 2004/06/28/12Z 2004/09/09/00Z
Eta-32 with assimilation of Level 2.5 radial wind data ETAW ETAV 2004/06/04/12Z 2004/06/28/00Z 2005/05/03/12Z
Eta-32 with GFS radiation physics ETAY ETAV 2004/04/30/12Z 2004/08/23/00Z
Eta-32 with modified precipitation assimilation, modified PBL physics, modified land-surface physics, assimilation of NEXRAD level 2.5 radial wind data ETAZ ETAV 2004/04/29/12Z; modified PBL physics added 2004/07/16/00Z, modified land-surface physics added 2004/07/26/12Z, assimilation of Level 2.5 radial winds added 2004/09/20/12Z 2005/01/24/12Z 2005/05/03/12Z
Eta-32 with modified Eta land-surface physics and modified precipitation assimilation (added 6/1/04) ETAL ETAY until 00Z 4/30, ETAV until 00Z 7/28, ETAZ thereafter 2003/12/01/12Z 2004/09/09/00Z 2005/05/03/12Z
Eta-12 with minor change to the Eta land-surface physics, adjustment of biases in the multi-sensor precipitation analyses using daily gauge data, and use of GOES-12 radiances in the Eta 3DVAR analysis ETAX Operational Eta-12 2004/01/09/12Z 2004/03/16/12Z 2004/03/16/12Z
Eta-32 with modified Eta land-surface physics ETAY ETAV 2003/11/26/00Z 2004/04/30/00Z
Eta-12 with modified Eta land-surface physics, adjustment of biases in the multi-sensor precipitation analyses using daily gauge data, and use of GOES-12 radiances in the Eta 3DVAR analysis ETAX Operational Eta-12 2003/10/25/00Z 2004/01/09/00Z 3 May 2005 for NOAH-LSM changes, 16 March 2004 for the others
Eta-32 with modified Eta land-surface physics, adjustment of biases in the multi-sensor precipitation analyses using daily gauge data, use of GOES-12 radiances in the Eta 3DVAR analysis, and modified radiation physics ETAY ETAV 2003/09/09/12Z, restarted 2003/10/04/00Z, new radiation physics added 2003/10/10/12Z 2003/11/25/12Z 3 May 2005 for NOAH-LSM changes, 16 March 2004 for the others
Eta-12 with surface land temperatures excluded from the 3DVAR analysis ETAX Ops Eta-12 2003/08/13/12Z 2003/09/09/00Z 2003/09/10/18Z
Eta-32 with new radiation physics, modified BMJ convective parameterization, and adjustment of biases in the multi-sensor precipitation analyses using daily gauge data. ETAY ETAV 2003/07/23/12Z, restarted at 12Z 8/26/2003 2003/09/09/00Z 16 March 2004 for the precipitation bias adjustment
Eta-32 with assimilation of merged Stage II/Stage IV precipitation analyses ETAL ETAV 2002/11/19/12Z 2003/01/13/12Z 2003/07/08/12Z
Eta-32 with modified treatment of surface data in the Eta 3DVAR analysis ETAL ETAV 2002/10/30/12Z 2002/11/19/00Z
Eta-32 with reduced aerodynamic resistance and reduced canopy resistance to transpiration ETAL ETAV 2002/10/08/12Z 2002/10/30/00Z
Eta-12 with modified cloud microphysics, assimilation of GOES cloud top pressure data, assimilation of NEXRAD radial velocity data ETAX Ops Eta-12 2002/08/14/12Z ; EDAS restarted from production at 12Z 9/19/02 2003/07/08/00Z 2003/07/08/12Z
Eta-32 forecast from GFS initial conditions ETAY ETAV 2002/10/01/12Z 2003/05/24/12Z Not applicable
Eta-32 with GOES cloud top pressure assimilation ETAY ETAZ 2002/06/25/12Z 2002/07/09/00Z 2003/07/08/12Z
Eta-12 with reduced physics timestep ETAX Ops Eta-12 2002/06/03/12Z 2002/06/14/00Z 2002/06/19/12Z
Eta-32 with modified cloud microphysics ETAZ ETAV 2002/03/19/12Z 2002/07/09/00Z 2003/07/08/12Z
Eta-32 with new radiance processing ETAY ETAV 2002/03/06/12Z 2002/06/03/00Z 2003/07/08/12Z
Eta-32 with assimilation of NEXRAD radial winds ETAL ETAV (to 00Z 3/6/2002)
ETAY (from 00Z 3/6/2002)
2002/02/22/12Z 2002/06/03/00Z 2003/07/08/12Z
Meso-08 HiResWindow Model - Eastern U.S. Nest EAST8 EAST 2002/02/10/18Z 2002/07/10/06Z 2002/07/17/12Z
Meso-08 HiResWindow Model - Central U.S. Nest CENT8 CENT 2002/02/10/12Z 2002/07/10/06Z 2002/07/17/12Z
Meso-08 HiResWindow Model - Western U.S. Nest WEST8 WEST 2002/02/10/06Z 2002/07/10/06Z 2002/07/17/12Z
Meso-08 HiResWindow Model - Puerto Rico Nest PR08 PR10 2002/02/10/06Z 2002/07/10/06Z 2002/07/17/12Z
Meso-10 HiResWindow Model - Alaska Nest AK10 AK12 2002/02/10/00Z 2002/07/10/06Z 2002/07/17/12Z
Meso-08 HiResWindow Model - Hawaii Nest HI08 HI10 2002/02/10/00Z 2002/07/10/06Z 2002/07/17/12Z
Eta-32 with new radiance processing and modified cloud microphysics / EDAS precipitation assimilation ETAY ETAV 2002/01/23/00Z 2002/03/06/00Z 2003/07/08/12Z
Eta-32 with modified thermal conductivity through snow cover ETAL ETAV 2002/01/23/00Z 2002/02/22/00Z 2002/02/26/12Z
Eta-10 Central nest with NEXRAD Winds CENTX CENT 2002/01/15/12Z 2002/04/14/12Z Spring/summer 2002

Disclaimer

Eric Rogers
NCEP/EMC Mesoscale Modeling Branch
Page Last Modified: 18 December 2007