# How do you calculate standard atmosphere table?

## How do you calculate standard atmosphere table?

Standard atmosphere for the [0km – 11km] range (troposphere)

- PP0=[T0−a×HT0]n=[TT0]n.
- derived from properties at sea level, with n=5.2561, and where H is the altitude in meters:
- P=101325×(1−2.25569×10−5×H)5.25616 [Pa]

**What is the standard atmospheric model?**

The International Standard Atmosphere (ISA) is a static atmospheric model of how the pressure, temperature, density, and viscosity of the Earth’s atmosphere change over a wide range of altitudes or elevations.

### What is the weight of Earth’s atmosphere at standard conditions?

approximately 14.70 pounds per square inch

Its effect on bodies within the air is called pressure. Under standard conditions at sea level, the average pressure exerted by the weight of the atmosphere is approximately 14.70 pounds per square inch (psi) of surface, or 1,013.2 millibars (mb).

**What is standard value of atmospheric pressure?**

Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103 dynes per square centimetre, 1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals.

#### What is the atmospheric pressure on a standard day at 10000 ft altitude?

Example – Air pressure at Elevation 10000 m

Altitude Above or Below Sea Level | Absolute Atmospheric Pressure | |
---|---|---|

feet | metre | psia |

9000 | 2743 | 10.5 |

10000 | 3048 | 10.1 |

15000 | 4572 | 8.29 |

**How cold is it at 40000 ft?**

After all, commercial airplanes can cruise at an altitude of nearly 40,000 feet, where temperatures hover around -70 degrees Fahrenheit.

## How many pounds does the atmosphere weigh?

When we multiply the average pressure ‘pressing’ down or exerted on you (14.7 pounds per square inch) times the square inches that make up the atmosphere (793 quadrillion) that equals about 11,700,000,000,000,000,000 pounds (over 11 quintillion)!

**How cold is it at 100000 feet?**

U.S. Standard Atmosphere Air Properties – Imperial (BG) Units

Geo-potential Altitude above Sea Level – h – (ft) | Temperature – t – (oF) | Density – ρ – (10-4 slugs/ft3) |
---|---|---|

80000 | -61.98 | 0.86 |

90000 | -56.54 | 0.56 |

100000 | -51.10 | 0.33 |

150000 | 19.40 | 0.037 |

### What is the standard atmospheric pressure in kPa?

101.325 kPa

For example, standard atmospheric pressure (or 1 atm) is defined as 101.325 kPa. The millibar, a unit of air pressure often used in meteorology, is equal to 0.1 kPa. (For comparison, one pound per square inch equals 6.895 kPa.)