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Meteorology

actvpr_mnmx_fao56 Compute actual vapor pressure via equation 17 as described in FAO 56.
actvpr_rhmean_fao56 Compute actual vapor pressure via equation 19 as described in FAO 56.
advect_variable Horizontally advect a variable on the globe.
angmom_atm Calculates the atmosphere's relative angular momentum.
brunt_vaisala_atm Compute the Brunt-Vaisala frequency which is a measure of bouyancy in a continuously stratified atmosphere.
coriolis_param Calculate the Coriolis parameter.
daylight_fao56 Compute maximum number of daylight hours as described in FAO 56.
dewtemp_trh Calculates the dew point temperature given temperature and relative humidity.
dpres_plevel Calculates the pressure layer thicknesses of a constant pressure level coordinate system.
eady_growth_rate Compute the maximum Eady growth rate.
epflux Compute quasi-geostrophic Eliassen-Palm fluxes at isobaric levels using NCEP Reanalysis.
fire_index_haines Computes the Haines fire index (aka: Lower Atmosphere Severity Index) from a sounding.
fluxEddy Calculates time averaged eddy flux quantities.
grad_latlon_cfd Compute the meridional and zonal gradients of a variable on a global or limited area rectilinear grid.
hydro Computes geopotential height using the hydrostatic equation.
hyi2hyo Interpolates from data on one set of hybrid levels to another set of hybrid levels.
hyi2hyo_Wrap Interpolates from data on one set of hybrid levels to another set of hybrid levels and preserves metadata.
kf_filter Extract equatorial waves by filtering in the Wheeler-Kiladis wavenumber-frequency domain.
latent_heat_water Estimate latent heat flux for water: evaporization (condensation), melting (freezing) or sublimation (deposition).
lclvl Calculates the pressure of the lifting condensation level.
mixhum_ptd Calculates the mixing ratio or specific humidity given pressure and dew point temperature.
mixhum_ptrh Calculates the mixing ratio or specific humidity given pressure, temperature and relative humidity.
netlw_fao56 Compute longwave radiation as described in FAO 56.
netsw_fao56 Compute net shortwave radiation as described in FAO 56.
omega_to_w Convert omega vertical velocity (Pa/s) to (m/s).
pot_temp Compute potential temperature.
pot_temp_equiv Compute equivalent potential temperature.
pot_vort_hybrid Compute potential vorticity on hybrid levels and a global grid.
pot_vort_isobaric Compute potential vorticity on isobaric levels and a global rectilinear grid.
prcwater_dp Computes column precipitable water of the rightmost dimension.
pres2hybrid Interpolates data on constant pressure levels to hybrid levels.
pres2hybrid_Wrap Interpolates data on constant pressure levels to hybrid levels and retains metadata.
pres_sigma Calculates the pressure at specified sigma levels.
prsatm_tz_fao56 Compute atmospheric pressure as described in FAO 56.
prsatm_z_fao56 Compute atmospheric pressure using the approximation described in FAO 56: Chapter 3; equation 7.
pslec Computes sea level pressure from CCM/CAM hybrid model variables using the ECMWF formulation.
pslhor Computes sea level pressure from CCM/CAM hybrid model variables using the ECMWF formulation and Trenberth's horizontal correction.
pslhyp Computes sea level pressure using the hypsometric equation.
psychro_fao56 Computes the psychrometric constant [kPa/C] as described in FAO 56.
radext_fao56 Compute extraterrestrial radiation for daily periods as described in FAO 56.
radsol2_fao56 Compute solar radiation from daily sunshine and day-of-year as described in FAO 56.
radsol3_hargreaves_fao56 Compute solar radiation derived from air temperature differences using Hargreaves method as described in FAO 56.
radsol_clrsky_fao56 Compute clear sky solar radiation as described in FAO 56.
radsol_fao56 Compute solar radiation via the 'Angstrom Formula' which uses extraterrestrial radiation and relative sunshine as described in FAO 56 (equation 35).
rdsstoi Reads weekly/monthly compocp site and climatology grids.
refevt_hamon Use the Hamon formulation to derive reference evapotranspiration.
refevt_hargreaves_fao56 Use the Hargreaves ETo equation to derive reference evapotranspiration as described in FAO 56.
refevt_penman_fao56 Use the full Penman-Monteith equation to derive reference evapotranspiration as described in FAO 56.
refevt_turc Use the Turc ETo formulation to derive reference evapotranspiration.
refevt_turc_rh Use the Turc ETo formulation with a correction for low relative humidity to derive reference evapotranspiration.
relhum Calculates relative humidity given temperature, mixing ratio, and pressure.
relhum_ice Calculates relative humidity with respect to ice, given temperature, mixing ratio, and pressure.
relhum_ttd Calculates relative humidity given temperature and dew point temperature.
relhum_water Calculates relative humidity with respect to water, given temperature, mixing ratio, and pressure.
rhum_fao56 Compute relative humidity as described in FAO 56.
rigrad_bruntv_atm Compute the atmospheric gradient Richardson number and, optionally, the Brunt-Vaisala, buoyancy and shear.
satvpr_mean_fao56 Compute mean saturation vapor pressure using minimum and maximum temperature temperature as described in FAO 56.
satvpr_slope_fao56 Compute the slope of the saturation vapor pressure curve as described in FAO 56.
satvpr_tdew_fao56 Compute actual saturation vapor pressure as described in FAO 56.
satvpr_temp_fao56 Compute saturation vapor pressure using temperature as described in FAO 56.
satvpr_water_bolton Estimate the saturation vapor pressure over water using Bolton's equation 10.
satvpr_water_stipanuk Estimate the saturation vapor pressure over water using the Stipanuk approximation.
soil_heatflux_month_fao56 Compute soil heat flux for monthly periods as described in FAO 56.
static_stability Compute static stability.
stdatmus_p2tdz Calculates the corresponding temperature, density, and height based on the 1976 U.S. standard atmosphere, given the pressure.
stdatmus_z2tdp Calculates the corresponding temperature, density, and pressure based on the 1976 U.S. standard atmosphere, given the height.
tdew_actvpr_fao56 Compute dew point temperature as a function of actual vapor pressure as described in FAO 56.
thornthwaite Estimate the potential evapotranspiration (PET) via the Thornthwaite method.
u2_fao56 Compute 2-meter wind speed (m/s) as described in FAO 56.
uv2dv_cfd Computes divergence using centered finite differences.
uv2vr_cfd Computes relative vorticity using centered finite differences.
vapor_pres_rh Compute vapor pressure given relative humidity (%) and saturation vapor pressure.
vibeta Performs vertical integration using beta factors.
w_to_omega Convert vertical velocity with units (m/s) to Pa/s.
wetbulb Compute wetbulb temperature.
wetbulb_stull Calculate wet bulb temperature at standard sea level pressure (1013.25 hPa) using the method of R.Stull.
wgt_vertical_n Calculate a weighted vertical average and/or sum (integral).
wind_component Calculate zonal and meridional wind components from wind speed and wind direction.
wind_direction Calculate meteorological wind direction from zonal and meridional wind components.
wind_speed Calculate wind speed from zonal and meridional wind components.
wind_stats Given a sequence of wind speeds and directions, compute assorted wind-related statistics including the standard deviation of the wind direction.
z2geouv Computes the geostrophic zonal and meridional wind components using geopotential height on isobaric levels (rectilinear grid only).
zonal_mpsi Computes a zonal mean meridional stream function.
zonal_mpsi_Wrap Computes a zonal mean meridional stream function and retains metadata.