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Geomagnetic Hpo index (V3.0)

This data publication includes the half-hourly Hp30 and ap30 indices as well as the hourly Hp60 and ap60 indices, collectively denoted as Hpo. This dataset is based on near real-time geomagnetic observatory data provided by 13 contributing observatories. It is derived and distributed by GFZ German Research Centre for Geosciences. When using the Hpo index, please cite this data publication as well as the accompanying publications Yamazaki et al. (2024) and Yamazaki et al. (2022), which serve as documentation of the Hpo. The dataset is organised in yearly files, which, for the current year, are updated on a monthly basis. Typically, during the second week of a month, the data for the previous month is appended to the current year's file. The files are in ASCII files and start with header lines marked with # (hash). The Hpo index was initially developed within the H2020 project SWAMI (grant agreement No 776287) and is produced by Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences. It derives from the same 13 geomagnetic observatories that also contribute to the Kp index (Matzka et al., 2021, https://doi.org/10.5880/Kp.0001). They are listed as contributors to this data publication. With the introduction of the DOI for the Hpo index (Matzka et al, 2021, https://doi.org/10.5880/Hpo.0001), this DOI landing page and the associated HTTPS server linked to the DOI become the primary archive of Hpo (while the other established index distribution mechanisms at GFZ will be maintained in parallel). With the DOI, the dataset can grow with time, but a change of the data, once published, is not possible. If necessity arises in the future to correct already published values, then the corrected dataset will be published with a new DOI. Older DOIs and data sets will then still be available. For each DOI, an additional versioning mechanism will be available to document changes to the files such as header or format changes, which do not affect the integrity of the data. The DOI https://doi.org/10.5880/Hpo.0003 identifies the current version. A format description and a version history are provided in the data download folder.

ELFIN-L Level 1 EPD (Electron Losses and Fields INvestigation on board the Lomonosov satellite, Electron Particle Detector)

The objective of the Lomonosov satellite development concerns the studies of the ultra-high energy cosmic rays and fast processes in optic, X-ray and gamma-ranges which occur in the upper layers of the Earth's atmosphere and in the Universe. This dataset consists of electron particle detector (EPD) counts data of the ELFIN-L instrument which has been described in Shprits et al. (2018). The data rate is 2 measurements per second on 8 physical electron detectors with 12 sub-channels from 21 keV to 4.7 MeV. The data is available from May to November 2016. Due to commissioning-phase and changes in the detector configuration only data from August to November 2016 is usable. Some of the electron detector channels do not provide valid or other than noise measurements. The valid channels are for 21 keV, 30 keV, 44 keV, 1.006 MeV and 1.600 MeV.

ELFIN-L Level 2 EPD (Electron Losses and Fields INvestigation on board the Lomonosov satellite, Electron Particle Detector)

The objective of the Lomonosov satellite development concerns the studies of the ultra-high energy cosmic rays and fast processes in optic, X-ray and gamma-ranges which occur in the upper layers of the Earth's atmosphere and in the Universe. This dataset consists of calibrated electron particle detector (EPD) data of the ELFIN-L instrument which has been described in Shprits et al. (2018). The data rate is 2 measurements per second on 8 physical electron detectors with 12 sub-channels from 21 keV to 4.7 MeV. The data is available from May to November 2016. Due to commissioning-phase and changes in the detector configuration only data from August to November 2016 is usable. Some of the electron detector channels do not provide valid or other than noise measurements. The valid channels are for 21 keV, 30 keV, 44 keV, 1.006 MeV and 1.600 MeV.

ELFIN-L Level 3 EPD (Electron Losses and Fields INvestigation on board the Lomonosov satellite, Electron Particle Detector)

The objective of the Lomonosov satellite development concerns the studies of the ultra-high energy cosmic rays and fast processes in optic, X-ray and gamma-ranges which occur in the upper layers of the Earth's atmosphere and in the Universe. This dataset consists of calibrated electron particle detector (EPD) data of the ELFIN-L instrument which has been described in Shprits et al. (2018). The data rate is 2 measurements per second on 8 physical electron detectors with 12 sub-channels from 21 keV to 4.7 MeV. The data is available from May to November 2016. Due to commissioning-phase and changes in the detector configuration only data from August to November 2016 is usable. Some of the electron detector channels do not provide valid or other than noise measurements. The valid channels are for 21 keV, 30 keV, 44 keV, 1.006 MeV and 1.600 MeV.

ELFIN-L Level 2 Adiabatic Invariants (Electron Losses and Fields INvestigation on board the Lomonosov satellite)

The objective of the Lomonosov satellite development concerns the studies of the ultra-high energy cosmic rays and fast processes in optic, X-ray and gamma-ranges which occur in the upper layers of the Earth's atmosphere and in the Universe. This dataset consists of additional adiabatic invariants (Lm, K and I) data of the ELFIN-L instrument which has been described in Shprits et al. (2018). The data is available from May to November 2016.

ELFIN-L Level 1 ENG (Electron Losses and Fields INvestigation on board the Lomonosov satellite, Engineering data)

The objective of the Lomonosov satellite development concerns the studies of the ultra-high energy cosmic rays and fast processes in optic, X-ray and gamma-ranges which occur in the upper layers of the Earth's atmosphere and in the Universe. This dataset consists of engineering housekeeping data (ENG) data of the ELFIN-L instrument which has been described in Shprits et al. (2018). The data is available from May to November 2016.

ELFIN-L Level 1 PRM (Electron Losses and Fields INvestigation on board the Lomonosov satellite, Pierce-Rowe Magnetometer data)

The objective of the Lomonosov satellite development concerns the studies of the ultra-high energy cosmic rays and fast processes in optic, X-ray and gamma-ranges which occur in the upper layers of the Earth's atmosphere and in the Universe. This dataset consists of Pierce-Rowe Magnetometer data (PRM) of the ELFIN-L instrument which has been described in Shprits et al. (2018). The data is available from May to November 2016.

An empirical model of electron pitch angle distributions in the outer radiation belt based on Van Allen Probes data

Here, we present an empirical model of the equatorial electron pitch angle distributions, based on the Magnetic Electron Ion Spectrometer (MagEIS) instrument aboard the Van Allen Probes. The model was created for energies from 37 keV up to 2.65 MeV. The model uses the solar wind dynamic pressure as a driving parameter and has a continuous dependence on Lm, magnetic local time and activity. It works for L-shells from 3.05 up around 5.95. For each channel of the MagEIS instrument, there are two files with model coefficients, one for Pdyn <5.5-6 nPa (e.g., “Pijk_246_keV.dat’) , and the second one for very high dynamic pressure values above 5.5 nPa (e.g., “Pijk_246_keV_HIGH.dat’). The script to read both file types is provided (“read_coefs.py”), and the data format is explained in the readme file.

Geomagnetic Hpo index

This data publication includes the half-hourly Hp30 and ap30 indices as well as the hourly Hp60 and ap60 indices, collectively denoted as Hpo. This dataset is based on near real-time geomagnetic observatory data provided by 13 contributing observatories. It is derived and distributed by GFZ German Research Centre for Geosciences. When using the Hpo index, please cite this data publication as well as the accompanying publication Yamazaki et al. (submitted), which serves as documentation of the Hpo. The dataset is organised in yearly files, which, for the current year, are updated on a monthly basis. Typically, during the second week of a month, the data for the previous month is appended to the current year's file. The files are in ASCII files and start with header lines marked with # (hash). The Hpo index was developed within the H2020 project SWAMI (grant agreement No 776287) and is produced by Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences. It derives from the same 13 geomagnetic observatories that also contribute to the Kp index (Matzka et al., 2021, https://doi.org/10.5880/Kp.0001). They are listed as contributors to this data publication. With the introduction of the DOI for the Hpo index (Matzka et al, 2021, https://doi.org/10.5880/Hpo.0001), this DOI landing page and the associated HTTPS server linked to the DOI become the primary archive of Hpo (while the other established index distribution mechanisms at GFZ will be maintained in parallel). With the DOI, the dataset can grow with time, but a change of the data, once published, is not possible. If necessity arises in the future to correct already published values, then the corrected dataset will be published with a new DOI. Older DOIs and data sets will then still be available. For each DOI, an additional versioning mechanism will be available to document changes to the files such as header or format changes, which do not affect the integrity of the data. The DOI https://doi.org/10.5880/Hpo.0002 identifies the current version. A format description and a version history are provided in the data download folder.

Geomagnetic Hpo index

This data publication includes the half-hourly Hp30 and ap30 indices as well as the hourly Hp60 and ap60 indices. All are unitless and collectively denoted as Hpo or Hpo index family. The dataset is based on near real-time geomagnetic observatory data provided by 13 contributing observatories. It is derived and distributed by GFZ German Research Centre for Geosciences. When using the Hpo index, please cite this data publication as well as the accompanying publication Matzka et al. (in prep), which serves as documentation of the Hpo index family. The dataset is organised in yearly files, which, for the current year, are updated on a monthly basis. Typically, during the second week of a month, the data for the previous month is appended to the current year's file. The files are in ASCII files and start with header lines marked with # (hash). The Hpo index was developed within the H2020 project SWAMI and is produced by Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences. It derives from the same 13 geomagnetic observatories that also contribute to the Kp index (Matzka et al., 2021). They are listed as contributors to this data publication. With the introduction of the DOI ‘https://doi.org/10.5880/Hpo.0001’, this DOI landing page and the associated FTP server linked to the DOI become the primary archive of Hpo (while the other established index distribution mechanisms at GFZ will be maintained in parallel). With the DOI, the dataset can grow with time, but a change of the data, once published, is not possible. If necessity arises in the future to correct already published values, then the corrected dataset will be published with a new DOI. Older DOIs and data sets will then still be available. For each DOI, an additional versioning mechanism will be available to document changes to the files such as header or format changes, which do not affect the integrity of the data. The DOI https://doi.org/10.5880/Hpo.0001 identifies the current version. A format description is provided in the data download folder.

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