Python interface for space weather indices
This python module interfaces the space weather data available at https://celestrak.com/SpaceData/, https://kp.gfz-potsdam.de/en/data, and https://omniweb.gsfc.nasa.gov/ow.html. It includes the geomagnetic Ap and Kp indices, both the 3h values and the daily sum/averages. The data also include the solar f10.7 cm radio fluxes, the observed values as well as the 1 AU adjusted values, daily values and the 81-day running means. See Data sources below.
Documentation is available at https://pyspaceweather.readthedocs.io.
numpy- requiredpandas- requiredrequests- required for updating the data filespytest,pytest-mock- optional, for testing
A pip package called spaceweather is available from the
main package repository, and can be installed with:
$ pip install spaceweatherThe latest development version can be installed
with pip directly from github
(see https://pip.pypa.io/en/stable/reference/pip_install/#vcs-support
and https://pip.pypa.io/en/stable/reference/pip_install/#git):
$ pip install [-e] git+https://github.com/st-bender/pyspaceweather.gitThe other option is to use a local clone:
$ git clone https://github.com/st-bender/pyspaceweather.git
$ cd pyspaceweatherand then using pip (optionally using -e, see
https://pip.pypa.io/en/stable/reference/pip_install/#install-editable):
$ pip install [-e] .or using setup.py:
$ python setup.py installOptionally, test the correct function of the module with
$ py.test [-v]or even including the doctests in this document:
$ py.test [-v] --doctest-glob='*.md'The python module itself is named spaceweather and is imported as usual
by calling
>>> import spaceweatherThe module provides two functions to access the data from
Celestrak,
sw_daily() for the daily data
as available from the website, and ap_kp_3h() for the 3h Ap and Kp values.
Both functions return pandas.DataFrames.
When the data available in the packaged version are too old for the use case,
they can be updated by passing update=True to both functions, or by calling
update_data() explicitly.
>>> import spaceweather as sw
>>> df_d = sw.sw_daily()
>>> print(df_d.loc["2000-01-01"].Apavg)
30.0
>>> df_3h = sw.ap_kp_3h()
>>> df_3h.loc["2000-01-01 01:30:00"]
Ap 56.0
Kp 5.3
Name: 2000-01-01 01:30:00, dtype: float64
>>> # All 3h values for one day
>>> df_3h.loc["2000-01-01"]
Ap Kp
2000-01-01 01:30:00 56 5.3
2000-01-01 04:30:00 39 4.7
2000-01-01 07:30:00 27 4.0
2000-01-01 10:30:00 18 3.3
2000-01-01 13:30:00 32 4.3
2000-01-01 16:30:00 15 3.0
2000-01-01 19:30:00 32 4.3
2000-01-01 22:30:00 22 3.7The "GFZ" module supports the ascii and WDC files as offered by the GFZ German Research Centre for Geosciences on their data page. In contrast to the official python client, this module reads the data from the (downloaded) files and does not access the web service API. The interface is mostly the same as for the "Celestrak" data:
>>> import spaceweather as sw
>>> df_d = sw.gfz_daily()
>>> print(df_d.loc["2000-01-01"].Apavg)
30.0
>>> df_3h = sw.gfz_3h()
>>> df_3h.loc["2000-01-01 01:30:00"]
Ap 56.000
Kp 5.333
Name: 2000-01-01 01:30:00, dtype: float64Currently, the data are not included in the package, downloads can be triggered
by passing update=True to sw.gfz_daily() or by running sw.update_gfz().
The lower-level interface functions are called read_gfz(<filename>)
for the ascii .txt files, and read_gfz_wdc(<filename>) for the WDC format.
They can also be used directly for reading already downloaded data files
outside of the package's data directory.
>>> import spaceweather as sw
>>> df_d = sw.read_gfz("./tests/Kp_ap_Ap_SN_F107_since_2024.txt")
>>> print(df_d.loc["2024-01-01"].Apavg)
10.0The data format for the GFZ Hpo indices
Hp30 and Hp60 is also supported.
For downloading and updating the local Hp30 and Hp60 data files,
use sw.update_gfz_hp30() and sw.update_gfz_hp60().
For reading individual files, use read_gfz_hp(<filename>).
>>> import spaceweather as sw
>>> df_hp30 = sw.read_gfz_hp("./tests/Hp30_ap30_nowcast.txt")
>>> df_hp30.loc["2025-07-01 00:15:00"]
year 2025.000000
month 7.000000
day 1.000000
hh_h 0.000000
hh_m 0.250000
days 34150.000000
days_m 34150.011719
Hp 3.000000
ap 15.000000
D 0.000000
Name: 2025-07-01 00:15:00, dtype: float64
>>> df_hp60 = sw.read_gfz_hp("./tests/Hp60_ap60_nowcast.txt")
>>> df_hp60.loc["2025-07-01 00:30:00"]
year 2025.000000
month 7.000000
day 1.000000
hh_h 0.000000
hh_m 0.500000
days 34150.000000
days_m 34150.019531
Hp 3.333000
ap 18.000000
D 0.000000
Name: 2025-07-01 00:30:00, dtype: float64To get a complete combined historic and nowcast dataset, use sw.gfz_daily()
by passing the Hp30 or Hp60 file locations and setting gfz_format to "hp30" or "hp60".
>>> import spaceweather as sw
>>> df_d = sw.gfz_daily(
... gfzpath_all=sw.HP30_PATH_ALL,
... gfzpath_30d=sw.HP30_PATH_30D,
... gfz_format="hp30",
... )
>>> df_d.loc["2025-07-01 00:15:00"]
year 2025.000000
month 7.000000
day 1.000000
hh_h 0.000000
hh_m 0.250000
days 34150.000000
days_m 34150.011719
Hp 3.000000
ap 15.000000
D 0.000000
Name: 2025-07-01 00:15:00, dtype: float64The OMNI 1-hour yearly data
are accessible via omnie_hourly(<year>) or read_omnie(<file>).
Both functions should work with the OMNI2 standard and extended text files.
If the data are not already available locally, they can be cached by passing
cache=True to that function or by calling cache_omnie(<year>) explicitly.
As for the Celestrak data, pandas.DataFrames are returned.
>>> import spaceweather as sw
>>> df_h = sw.omnie_hourly(2000) # doctest: +SKIP
>>> # or with automatic caching (downloading)
>>> df_h = sw.omnie_hourly(2000, cache=True) # doctest: +SKIPIf the data are already available locally, you can point the parser to that location:
>>> import spaceweather as sw
>>> df_h = sw.omnie_hourly(2000, local_path="/path/to/omni/data/") # doctest: +SKIPAnother option is to provide a filename directly to read_omnie():
>>> import spaceweather as sw
>>> df = sw.read_omnie("/path/to/omni/data/file.dat") # doctest: +SKIPBasic class and method documentation is accessible via pydoc:
$ pydoc spaceweather
$ pydoc spaceweather.celestrak
$ pydoc spaceweather.gfz
$ pydoc spaceweather.omniThis python interface is free software: you can redistribute it or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 (GPLv2), see local copy or online version.
The "celestrak" data can be found at https://celestrak.com/SpaceData/ and is included with kind permission from Dr. T.S. Kelso at celestrak, for details see the included COPYING.data file.
The data sources and file format are described at http://celestrak.com/SpaceData/SpaceWx-format.php (see file_format.txt for a local copy of the format description).
The "GFZ" data are provided as tabulated ascii files (format description, local copy) and in WDC format (local copy) by the GFZ German Research Centre for Geosciences on their official data webpage. The data have the doi: 10.5880/Kp.0001, and they are provided under the "Creative Commons attribution license" CC-by 4.0 (local copy COPYING.CCby4.0).
The "GFZ" Hp30 and Hp60 data are provided as tabulated ascii files (Hp30 format, local copy; Hp60 format, local copy). The Hpo data are available from https://kp.gfz-potsdam.de/en/hp30-hp60 and via the doi: 10.5880/Hpo.0003.
When using data from the GFZ Potsdam, consider to cite the following publications, see also COPYING.gfz for details:
Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O., & Morschhauser, A. (2021), The geomagnetic Kp index and derived indices of geomagnetic activity, Space Weather, volume 19, issue 5, e2020SW002641. https://doi.org/10.1029/2020SW002641
Yamazaki, Y., Matzka, J., da Silva, M.V., Kervalishvili, G., Korte, M., Rauberg, J., (2024), Assessment of geomagnetic activity for the Kp=9 "Gannon Storm" in May 2024 based on version 3.0 Hpo Indices. ESS Open Archive, https://doi.org/10.22541/essoar.171838396.68563140/v1
This package includes part of the hourly-resolved OMNI data, accessible through https://spdf.gsfc.nasa.gov/pub/data/omni/low_res_omni/, and it enables easy downloading of it. The file format is described at https://spdf.gsfc.nasa.gov/pub/data/omni/low_res_omni/omni2.text (local copy omni_format.txt) and the "extended" format at https://spdf.gsfc.nasa.gov/pub/data/omni/low_res_omni/extended/aareadme_extended (local copy omnie_format.txt).
If you use the OMNI data in your work, please read COPYING.omni carefully and cite the following publication:
King, Joseph H. and Natalia E. Papitashvili, Solar wind spatial scales in and comparisons of hourly Wind and ACE plasma and magnetic field data, J. Geophys. Res., 110, A02104, 2005.
Please acknowledge the OMNI sources, using the following DOIs for the OMNI datasets:
Papitashvili, Natalia E. and King, Joseph H. (2022), "OMNI 1-min Data" [Data set], NASA Space Physics Data Facility, https://doi.org/10.48322/45bb-8792
Papitashvili, Natalia E. and King, Joseph H. (2022), "OMNI 5-min Data" [Data set], NASA Space Physics Data Facility, https://doi.org/10.48322/gbpg-5r77
Papitashvili, Natalia E. and King, Joseph H. (2022), "OMNI Hourly Data" [Data Set], NASA Space Physics Data Facility, https://doi.org/10.48322/1shr-ht18
Papitashvili, Natalia E. and King, Joseph H. (2022), "OMNI Daily Data" [Data set], NASA Space Physics Data Facility, https://doi.org/10.48322/5fmx-hv56
Papitashvili, Natalia E. and King, Joseph H. (2022), "OMNI 27-Day Data" [Data set], NASA Space Physics Data Facility, https://doi.org/10.48322/nmh3-jf75
The OMNI data are also available from CDAWeb, and thus available via various other methods https://cdaweb.gsfc.nasa.gov/alternative_access_methods.html In particular, you might find our Python web service library useful https://pypi.org/project/cdasws Or through the HAPI streaming protocol https://github.com/hapi-server/client-python