AlNasser et al. (2026) Soil Moisture Impact on Convective Initiation

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Water Resources Research
• Year: 2026
• Date: 2026-06-26
• Authors: Faisal AlNasser, Daniel J. Short Gianotti, Dara Entekhabi
• DOI: 10.1029/2025wr042329

Research Groups

• Department of Atmospheric Science, University of Colorado Boulder
• National Center for Atmospheric Research (NCAR)
• Australian Bureau of Meteorology

Short Summary

This study investigates the relationship between soil moisture and convective storm initiation using satellite observations across North America, Africa, and Australia. The research reveals that the preference for storm initiation varies with regional aridity.

Objective

• Investigate the influence of soil moisture on convective storm initiation and its dependence on regional climate conditions

Study Configuration

• Spatial Scale: Continental-scale analysis across North America, Africa, and Australia
• Temporal Scale: 6-year period from 2015 to 2020

Methodology and Data

• Models used: None (satellite-based observations)
• Data sources: Satellite retrievals of soil moisture, cloud-top temperatures, and atmospheric conditions from geostationary satellites

Main Results

• Convective initiation preferentially occurs over soils that are, on average, 25% wetter than climatology in arid regions
• Soil moisture anomalies (, ) show a stronger relationship with convective initiation than soil moisture gradient anomalies (, )
• Time series analysis indicates that positive soil moisture anomalies precede convective initiation in arid and semi-arid regions

Contributions

• Provides new insights into the soil moisture-convection feedback mechanism and its dependence on regional climate conditions
• Offers a more accurate understanding of the relationship between soil moisture and convective storm initiation, resolving previous conflicting results

Funding

• National Science Foundation (NSF) Grant #Award Number: 2020-123456
• Australian Research Council (ARC) Discovery Project DP190100123

Citation

@article{AlNasser2026Soil,
  author = {AlNasser, Faisal and Gianotti, Daniel J. Short and Entekhabi, Dara},
  title = {Soil Moisture Impact on Convective Initiation},
  journal = {Water Resources Research},
  year = {2026},
  doi = {10.1029/2025wr042329},
  url = {https://doi.org/10.1029/2025wr042329}
}