flipchem.geophys

flipchem.geophys.read_geophys(date)

Parses a directory of files, expecting one file per year. See Notes for file structure.

Parameters:date (datetime.datetime) – Date and time for which to read geophysical parameters Returns:

• f107 (float) – F10.7 for the previous day
• f107a (float) – An 81 day average of the F10.7 values
• ap (array_like) –

  An array of AP values where each index in the array corresponds to:

  • 0 : daily AP
  • 1 : 3 hr AP index for current time
  • 2 : 3 hr AP index for 3 hrs before current time
  • 3 : 3 hr AP index for 6 hrs before current time
  • 4 : 3 hr AP index for 9 hrs before current time
  • 5 : Average of eight 3 hr AP indicies from 12 to 33 hrs prior to current time
  • 6 : Average of eight 3 hr AP indicies from 36 to 57 hrs prior to current time

Notes

Each file in the directory of files is expected to have the following structure:

1901012529 81013271720 3 0 7 97  4  5 12  6  7  2  0  3  50.21---069.50
1901022529 9 0 0 0 0 3 3 0 0  7  0  0  0  0  2  2  0  0  00.00---072.70
19010325291010 0 0 3 3 0 0 3 20  4  0  0  2  2  0  0  2  10.00---070.20

etc.

Examples

from datetime import datetime
import flipchem

f107, f107a, ap = flipchem.read_geophys(datetime(2017,1,4,2))

flipchem.geophys.update_geophys(year=None, base_url='https://amisr.com/geophys_params/')

This function downloads geophysical parameter files from the default url.

Parameters:

• year (int, optional) – The year for which to download a geophysical parameter file. If year is None, all files are downloaded.
• base_url (str, optional) – The URL at which the geophysical parameter files are hosted.

Notes

The files are updated on a daily basis, so it is important to update the local copy of these files on a regular basis.

Examples

import flipchem
flipchem.update_geophys(2020)