Cross-spectrum

{
  "id": "MLC-T-MET-004776",
  "term": "Cross-spectrum",
  "field": "Meteorology and atmospheric science",
  "definition": "A mathematical function that describes the frequency-domain relationship between two time series, indicating how the power of each series is distributed across different frequencies and their phase difference. It is the Fourier transform of the cross-correlation function. The cross-spectrum is used to identify common periodicities and lead-lag relationships between atmospheric phenomena.",
  "url": "https://mlchart.com/terminology/meteorology/cross-spectrum/"
}