Module: atmosphericmoisture atmosphericmoisture.py

Functions related to the thermodynamics of atmospheric moisture

Imported modules
import Numeric
Functions
dewpointdepression2rh
q2e
rh2shum
rh2w
saturation_mixing_ratio
saturation_pressure
saturation_pressure_over_ice
saturation_pressure_over_water
dewpointdepression2rh
```dewpointdepression2rh (
dpdp,
P,
T,
)

```

### Get the relative humidity from the dew-point depression

#### Arguments:

`dpdp`
Dew point depression (K)
`P`
Pressure (Pa)
`T`
Temperature (K)
q2e
```q2e ( q,  P )

```

### Get the partial vapour pressure from specific humidity

#### Arguments:

`q`
Specific humidity
`P`
Pressure (Pa)
rh2shum
```rh2shum (
rh,
P,
T,
)

```

### Get the specific humidity from the relative humidity

#### Arguments:

`rh`
Relative humidity (%)
`P`
Pressure (Pa)
`T`
Temperature (K)
rh2w
```rh2w (
rh,
P,
T,
)

```

### Get the mixing ratio from the relative humidity

#### Arguments:

`rh`
Relative humidity (%)
`P`
Pressure (Pa)
`T`
Temperature (K)
saturation_mixing_ratio
```saturation_mixing_ratio ( P,  T )

```

### Saturation mixing ratio from temperature and pressure

See Wallace and Hobbs

#### Arguments:

`P`
Presure (Pa)
`T`
Temperature (K)
saturation_pressure
```saturation_pressure ( T )

```

### Saturation pressure (Pa) from temperature

Consider the cases over water and ice, according to the temperature involved Do not consider subcooled water at all.

#### Arguments:

`T`
Temperature (K)
saturation_pressure_over_ice
```saturation_pressure_over_ice ( T )

```

### Saturation pressure (Pa) over ice

See Bohren, Albrecht (2000), pages 197-200

#### Arguments:

`T`
Temperature (K)
saturation_pressure_over_water
```saturation_pressure_over_water ( T )

```

### Saturation pressure (Pa) over water

See Bohren, Albrecht (2000), pages 197-200

`T`
Temperature (K)