ISEE Database for Nonlinear Force-Free Field of Solar Active Regions

Example of acknowledgments

ISEE Database for Nonlinear Force-Free Field of Solar Active Regions (doi: 10.34515/DATA_HSC-00000) was developed by the Hinode Science Center, Institute for Space-Earth Environmental Research (ISEE), Nagoya University.

Data DOI

• K. Kusano, H. Iijima, T. Kaneko, S. Masuda, T. IJu, and S. Inoue, "ISEE Database for Nonlinear Force-Free Field of Solar Active Regions," Hinode Science Center, Institute for Space-Earth Environmental Research, Nagoya University, 2021.
  doi: 10.34515/DATA.HSC-00000

Related articles

1. K. Kusano, T. Iju, Y. Bamba, and S. Inoue, "A Physics-Based Method That Can Predict Imminent Large Solar Flares," Science, vol. 369, no. 6503, pp. 587-591, 2020.
   doi: 10.1126/science.aaz2511
2. S. Inoue, T. Magara, V. S. Pandey, D. Shiota, K. Kusano, G. S. Choe, and K. S. Kim, "Nonlinear Force-Free Extrapolation of the Coronal Magnetic Field Based on the MHD-Relaxation Method," The Astrophysical Journal, vol. 780, no. 1, p. 101, 2013.
   doi: 10.1088/0004-637X/780/1/101

Interactive Data Language (IDL)

A sample IDL script returns an IDL structure as output.
Usage:

    IDL> data = load_nlfff('sample_filename.nc') ;; read data silently
    IDL> data = load_nlfff('sample_filename.nc',verbose=1) ;; print meta data
    IDL> data = load_nlfff('sample_filename.nc',verbose=2) ;; print meta data and plot figures
    IDL> help,data ;; show tags stored in the structure
    

Python

A sample Python script defines a Python class to read the dataset.
Please note that the netcdf4-python is required.
Usage:

    >>> import load_nlfff
    >>> data = load_nlfff.nlfff('sample_filename.nc') # read data
    >>> data.info() # print meta-data
    >>> data.plot() # plot Bx, By, Bz
    >>> print(vars(data).keys()) # list class variables
    

Fortran

The fortran program and Makefile are available to read the dataset.
Please note that the netCDF library should be linked.
Please edit the Makefile for your compiler and libraries.
Usage:

   $ make
   $ ./read_nlfff
   Enter netCDF file name:
   "sample_filename.nc"
    

ParaView