NCEP Atmospheric Models

 

Model

application

CFS

Climate

GFS

Global/Wx

GEFS/ NAEFS

Global Ensembles

NAM

Regional/ SevereWx

SREF

 

Regional

Ensembles

Domain

Global

Global

Global

No. Am.

No. Am.

Resolution

T62 (~200km)  64 levels MOM3

1 deg

40 lev

T382(~35km) to 7.5days T190(~70km) to 16 days

64 levels

T126

(~105km)

28 levels

12 km         60 levels

32-45 km/

28-60 lvls

Forecast length

9 months

4/day

16 days

4/day

16 days

4/day

84 hrs

4/day

87 hrs

4/day

# of Members

120/month

N/A

84/day

N/A

84/day

Model

RUC

Domestic Aviation

& Severe Wx

Air Quality

Domestic

Sfc Ozone [Smoke]

HiRes-Window

Severe Weather

Fire Wx/ IMET Support [Homeland Security]

Hurricane

track & intensity

Domain

CONUS

CONUS

[CONUS & Alaska]

2/3 CONUS

Alaska

Hawaii & PR

Selectable 4-8 State

[1-3 state]

Storm

Movable nest

Resolution

13 km

50 levels

CMAQ

12 km / 22 levels

[HYSPLIT off the 12 km NAM]

WRF-NMM

4.0 km 35 lvls

WRF-ARW   5.1 km 35 lvls

NMM

[+ HYSPLIT]

8 [4] km       50 lvls

HWRF & GFDL

9 km

42 levels

Forecast length

12 hours

24 / day

12-48 hours

2 / day

[4/day]

48 hours

1 large nest +    1 small nest

4/day when no hurricanes

48 [30] hrs

4/day

120 hrs

4 storms

4/day