Daily variable

Code

NCEP

Precipitation (mm)

prec

Maximum temperature (˚K)

tmax

Minimum temperature (˚K)

tmin

Mean temperature

temp

×

Mean sea level pressure

mslp

×

500 hPa geopotential height

p500

×

850 hPa geopotential height

p850

×

Near surface relative humidity

rhum

×

Relative humidity at 500 hPa height

r500

×

Relative humidity at 850 hPa height

r850

×

Near surface specific humidity

shum

×

Geostrophic airflow velocity

**_f

×

Vorticity

**_z

×

Zonal velocity component

**_u

×

Meridional velocity component

**_v

×

Wind direction

**th

×

Divergence

**zh

×