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Chunxiao Li 2021-01-23 23:56:49 +08:00
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# Welcome to ATMOS
This package is an archive of scientific routines that implements the estimation of atmospheric properties for various atmosphere models, such as Exponential, COESA76, and NRLMSISE-00. The package mainly estimates density, temperature, pressure and other parameters of air at a set of specific altitudes. For atmosphere below 86 kilometers, it also calculates the speed of sound, viscosity, and thermal conductivity.
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This package is an archive of scientific routines that implements the estimation of atmospheric properties for various atmosphere models, such as Exponential, COESA76, and NRLMSISE-00. The package mainly estimates density, temperature, and pressure of air at a set of specific altitudes.
## How to install
@ -16,7 +18,7 @@ pip install pyatmos --upgrade # to upgrade a pre-existing installation
#### Exponential
```python
>>> from ATMOS.pyatmos import expo
>>> from pyatmos import expo
>>> rhos_geom = expo([0,20,40,60,80]) # geometric altitudes by default
>>> print(rhos_geom) # [kg/m^3]
>>> rhos_geop = expo([0,20,40,60,80],'geopotential') # geopotential altitudes
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#### COESA 1976
```python
>>> from ATMOS.pyatmos import coesa76
>>> from pyatmos import coesa76
>>> rhos_geom,Ts_geom,Ps_geom = coesa76([0,20,40,60,80])
>>> print(rhos_geom) # [kg/m^3]
>>> rhos_geop,Ts_geop,Ps_geop = coesa76([0,20,40,60,80],'geopotential')
@ -52,7 +54,7 @@ pip install pyatmos --upgrade # to upgrade a pre-existing installation
*Before using NRLMSISE-00, the space weather data needs to be prepared in advance.*
```python
>>> from ATMOS.pyatmos import download_sw,read_sw
>>> from pyatmos import download_sw,read_sw
>>> # Download or update the space weather file from www.celestrak.com
>>> swfile = download_sw()
>>> # Read the space weather data
@ -62,7 +64,7 @@ pip install pyatmos --upgrade # to upgrade a pre-existing installation
Calculate the temperature, density at [25N, 102E, 20km] at 03:00:00 UTC on October 5, 2015 with anomalous oxygen and 3h-geomagnetic index.
```
>>> from ATMOS.pyatmos import nrlmsise00
>>> from pyatmos import nrlmsise00
>>> # Set a specific time and location
>>> t = '2015-10-05 03:00:00' # time(UTC)
>>> lat,lon,alt = 25,102,600 # latitude, longitude in [degree], and altitude in [km]
@ -81,9 +83,9 @@ Calculate the temperature, density at [25N, 102E, 20km] at 03:00:00 UTC on Octob
**Note: The range of longitude is [0,360] by default, and the west longitude can also be expressed as a negative number.**
## Change log
- **1.2.0 — Jan 22, 2021**
- Added **Exponential Atmosphere** up to 1000km
- Added **Committee on Extension to the Standard Atmosphere(COESA)** up to 1000km
- **1.2.1 — Jan 22, 2021**
- Added **Exponential Atmosphere** up to 1000 km
- Added **Committee on Extension to the Standard Atmosphere(COESA)** up to 1000 km
- Completed part of the help documentation for NRLMSISE-00
- Improved the code structure to make it easier to read
- **1.1.2 — Jul 26, 2020**