GLOBAL/HEMISPHERIC numerical analysis and forecast systems at JNWPU/NMC/NCEP - a HISTORY!

Year Type Model Horizontal Resolution Layers Domain Forecast Length Documentation Bye #/day
1957 H Barotropic 381 km 1 NH Octagonal 1977 pts 72-h JNWPUB #22 6/1993 2
1958 ? Baroclinic ? 2 36-h JNWPUB #26 1/1962 1
1960
1962 H Cressman filtered-equation 381 km 3 NH 36-h JNWPUB #34; NWS TBP #105 6/1966 (anl until Hough (1974) 2
1962 H Reed Surface 381 km 2 NH 36-h 6/1966
1966 H Primative Equation (PE) 381 km 6 NH (53x57 points) 36-h Shuman and Hovermale, JAM 1968 8/1980 (1/1978) 2
1970 H PE (Barotropic Extension) 381 km 1 NH 84-144 h 8/1980 (1/1978) 1
1974 G PE 2.5 deg 8 Global 12-h (FNL) NWS TPB #115 1976
1976 G PE 2.5 deg 9 Global 12-h (FNL) NWS TPB #258 8/1980
1977 G PE 3.75 deg 3 Global to 48-h; NH to 252-h 252-h NWS TPB #215, #257 4/1981 1
1978 H PE 190.5 km 7 NH (129x129 points) 84-h NMC Office Note #177 8/1980 2
1978 H Barotropic extension ? 1 NH 84-240 h 1/1980 1
1980 H PE extension (4th order finite differencing) 381 km 7 NH 60-144 h NWS TPB #272, #273, NMC Office Note #316 8/1980 1
1980 H Barotropic extension ? 1 NH 144-252 h NMC Office Note #316 8/1980 1
1980 G Global Spectral Model (GSM) (MRF/AVN) R30 12 Global 48-h NMC TPB #282 10/2002 (1983) 2
1980 H Spectral Extension R24 12 NH 48-144 h NMC Office Note #316 4/1981 1
1983 G Global Spectral Model (GSM) (MRF/AVN) R40 12 Global 240-h (00z cycle) 10/2002 (1983) 2
1985 G Global Spectral Model (GSM) (MRF/AVN) R40 18, 12 po Global 240-h (00z); 72-h (12z) NWS TPB #349 10/2002 (1987) 2
1987 G Global Spectral Model (GSM) (MRF/AVN) T80 18 Global 240-h (00z); 72-h (12z) 10/2002 (1991) 2
1991 G Global Spectral Model (GSM) (MRF/AVN) T126 18 Global 240-h, 00z; 72-h (12z) 10/2002 (1993) 2
1992 G+E Global Ensemble Forecast System (GEFS) T62 12 Global 240-h, 3 members NWS TPB #471 Still (1994) 1
1993 G Global Spectral Model (GSM) (MRF/AVN) T126 28 Global 240-h (00z); 72-h (12z) 10/2002 (2000) 2
1994 G+E Global Ensemble Forecast System (GEFS) T62 18 Global 384-h; 17 members Still (2000)
2000 G Global Spectral Model (GSM) (MRF/AVN) T170 (day 1-7) /T62 (day 8-16) 42 (day 1-7)/28 (day 8-16) Global 384-h (00z); 84-h (06,12,18z) 10/2002 (3/2002) 4
2000 G+E Global Ensemble Forecast System (GEFS) T126 (0-84h); T62 (84-384-h) 28 (0-84 h); 18 (84-384 h) Global 384-h Still (2004)
2001 G Seasonal Forecast System T62 28 Global 7 months NWS TPB #480 8/2004 1
2002 G Global Spectral Model (GSM) (MRF/AVN) T170 (day 1-7) /T62 (day 8-16) 42/28 Global 384-h (all 4 cycles) 10/2002 (10/2002) 4
2002 G Global Forecast System (renamed from MRF/AVN) T254 (0-84h); T170 (84-180h); T126 (180-384h) 64 (0-84h); 42 (84-180h); 28 (180-384 h) Global 384-h Still (2005) 4
2004 G Climate Forecast System (CFS, replaces SFM) T62 64 Global 9-10 months Saha et al, 2006 J. Climate Still (2011) 2
2005 G GFS T382 (0-180h); T190 (180-384h) 64 Global 384-h Still (2010) 4
2005 G+E GEFS T126 (0-180 h); T62 (180-384 h) 28 Global 384-h; 11 members Still (2006) 4
2006 G+E GEFS T126, 14+1 mbrs 28 Global 384h EMC Doc Still (2007) 2
2007 G+E GEFS T126, 20+1 mbrs 28 Global 384h NWS TIN Still (2010) 2
2010 G GFS T574 (0-192h); T190 (192-384h) 64 Global 384h NWS TIN Still (2015) 4
2010 G+E GEFS T190 (0-384h) 28 Global 384h NWS TIN Still (2012) 4
2010 G+E NAEFS (GEFS+CEFS) 1 deg lat/lon; 5 km products for CONUS; 6 km products for AK Global 384h NWS TIN Still (2016) 4
2011 G CFS; coupiled to GFDL MOM4 T126 (100 km) 64 Global At 00/06/12/18z: 1 9-month control run; At 00z, 3 1-month perturbed runs; At 06/12/18z; 3 perturbed runs to 45 days AMS Paper Still (2014) 4 cycles/day, 16 total runs/day
2012 G GDAS T254 Hybrid Ensemble DA 64 Global 6h (GDAS fcst) NWS TIN Still (2015) 4
2012 G+E GEFS T254 (55km) for 0-192h ,T190 for 192-384h 42 Global 384-h NWS TIN Still (2015) 4
2012 G NGAC (Global Aerosol Model) T126 (1 deg lat/lon) 64 Global 120h NWS TIN 9/2020 1 (00z)
2015 G GFS T1534 Semi-Lagrangian (0-240h); T574 (240-384h) 64 Global 384h NWS TIN Still (2017) 4
2015 G+E GEFS T574 (33km) to 192h, T382 (55km) from 192-384h 64 Global, 21 mbrs 384h NWS TIN Still (2020) 4
2016 G+E NAEFS (GEFS+CEFS) 1 deg lat/lon (global); 2.5 km products for CONUS; 3 km products for Alaska Global 384h NWS TIN Still (2018) 4
2016 G GDAS T1534 4D-Hybrid Ensemble DA 64 Global 6h (GDAS fcst) NWS TIN Still (2019) 4
2017 G GFS/GDAS (NEMS-IO replaces Spectral IO) T1534 Semi-Lagrangian (0-240h); T574 (240-384h) 64 Global 384h NWS SCN Still (2019) 4
2017 G NGAC (Global Aerosol Model) T126 64 Global 120h NWS SCN 9/2020 2 (00z, 12z)
2018 G+E NAEFS (GEFS+CEFS) 0.5 deg global products; 2.5 km CONUS, 3 km Alaska Global 384h NWS SCN Still 4
2019 G GFS (FV3 replaces GSM) 13 km 64, model top to 0.2 hPa Global 384h NWS SCN Still (2021) 4
2020 G+E GEFS (FV3 replaces GSM) 25 km; 31 mbrs 64 Global 384h (00z cycle runs to 35 days NWS SCN Still 4
2020 G GEFS-Aerosol (replaces NGAC) 25 km 64 Global 120h NWS SCN Still 4
2021 G GFS 13km 127, model top to 80 km Global 384h NWS SCN Still 4
2021 G WAM-IPE (runs GSM) T62 150 (400-600 km model top) Global 48h NWS SCN Still 4