# pres_atm_kPa: Get mean atmospheric pressure at given altitude in kPa In physiology: Calculate physiologic characteristics of awake and anesthetized adults, children and infants

## Description

Get mean atmospheric pressure at given altitude in kPa

## Usage

 ```1 2 3``` ```pres_atm_kPa(altitude_m) pres_atm_frac(altitude_m) ```

## Arguments

 `altitude_m` Altitude above mean sea level in meters

## Value

Pressure in pascals

## Functions

• `pres_atm_frac`: Get fraction of mean atomspheric pressure at sea level

## References

Below 51 km: Practical Meteorology by Roland Stull, pg 12. Above 51 km: http://www.braeunig.us/space/atmmodel.htm Validation data: https://www.avs.org/AVS/files/c7/c7edaedb-95b2-438f-adfb-36de54f87b9e.pdf

Other physics: `Pa_to_torr`, `svp_sea_level`, `temp_c_to_k`

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11``` ```pres_atm_kPa(-430.5) # Dead Sea pres_atm_kPa(0) pres_atm_kPa(3440) # Namche Bazaar pres_atm_kPa(4260) # Dingboche pres_atm_kPa(5364) # Everest Base Camp pres_atm_kPa(6000) # Camp 1 pres_atm_kPa(6400) # Camp 2 pres_atm_kPa(7200) # Camp 3 pres_atm_kPa(7950) # Camp 4 pres_atm_kPa(8850) # Everest summit pres_atm_frac(8850) # fraction of sea level pressure on Everest ```

### Example output

```[1] 106605
[1] 101325
[1] 66289.45
[1] 59602.43
[1] 51474.86
[1] 47217.62
[1] 44689.9
[1] 39963.69
[1] 35909.55
[1] 31492.01
[1] 0.3108019
```

physiology documentation built on May 2, 2019, 8:58 a.m.