Microbarom low-frequency data products of the International Monitoring System’s infrasound stations

This data series consists of data products derived from broadband signal detection lists that have been processed for the certified infrasound stations of the International Monitoring System. More specifically, this data series covers the dominant frequency range of microbaroms (0.15-0.35 Hz) and is therefore called the ‘mb_lf’ product. The temporal resolution (time step and window length) is 15 min. For processing the infrasound data, the Progressive Multi-Channel Correlation (PMCC) array processing algorithm with a one-third octave frequency band configuration between 0.01 and 4 Hz has been used. The detected signals from the most dominant directions in terms of number of arrivals within a time window and the product-specific frequency range are summarized at predefined time steps. Along with several detection parameters such as the back azimuth, apparent velocity, or mean frequency, additional quantities for assessing the relative quality of the detection parameters are provided. For each year since 2003, one dataset containing the data product of all certified IMS stations (.nc files, NetCDF format) is available as a compressed .zip file. Further information on the processing and details about the open-access data products can be found in: Hupe et al. (2021), IMS infrasound data products for atmospheric studies and civilian applications, Earth System Science Data, doi: XXX. The supplementary material of that publication includes basic example scripts for reading the .nc files in MATLAB or Python.