Limitations and uncertainties of climatic interpretations

Climatic interpretations of the SR have real limits, which must be stated honestly. The main sources of uncertainty:

• Uneven and incomplete station coverage. The network of SR receivers is sparse and unevenly distributed, so the global picture of lightning activity is reconstructed from a limited number of points Bozoki 2023.
• Local influences. Each station also captures local conditions (the local electromagnetic environment, nearby sources of interference), which mix with the global signal.
• The need for calibration. Without careful calibration and separation of ionospheric and instrumental effects, the measured intensity cannot be unambiguously converted to lightning activity, let alone to temperature or moisture.

The consequence is that detailed quantitative interpretation is demanding Bozoki 2023. The qualitative relationships described in this cluster (temperature → lightning → SR; manifestations of ENSO; the link to upper-tropospheric moisture) are well supported, but precise figures — especially the conversion of the SR to absolute temperatures or long-term climatic trends — require caution, long calibrated series and the critical separation of the climatic signal from other influences.

For this reason we mark this subtopic with a caution: not because it is pseudoscience, but in order to let the reader clearly distinguish the proven sensitivity of the SR to tropical temperature from the as-yet unresolved precise quantification.

*Cluster G file — part of the Schumann resonance knowledge base.*