Hierro (2025) Observational Evidence of Vertical Drying Over Deforested Amazonia From GPS ‐ RO Data

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

Identification

• Journal: International Journal of Climatology
• Year: 2025
• Date: 2025-11-12
• Authors: R. Hierro
• DOI: 10.1002/joc.70184

Research Groups

Not explicitly mentioned in the abstract.

Short Summary

This study investigates the impact of deforestation on the vertical humidity structure in Amazonia, revealing significant drying, particularly in the lower troposphere, in highly deforested regions, which intensifies during the dry season.

Objective

• To examine how deforestation affects the vertical structure of humidity in Amazonia.

Study Configuration

• Spatial Scale: Amazonia, with grid cells classified by the percentage of accumulated forest loss.
• Temporal Scale: 2007 to 2023 (17 years).

Methodology and Data

• Models used: Not applicable for humidity simulation; PRODES/INPE system used for classifying forest loss.
• Data sources: High-vertical-resolution specific humidity profiles from GPS radio occultation (GPS-RO) observations; PRODES/INPE system data for forest loss classification.

Main Results

• Consistent and significant drying was observed in highly deforested areas (forest loss > 50%).
• The drying is most pronounced in the lower troposphere (below approximately 3000–4000 meters).
• The strongest reductions in specific humidity, up to -0.0078 kg kg⁻¹, were found below 1500 meters.
• This drying intensifies during the dry season (May–September).
• Humidity differences persist into the mid-troposphere, suggesting potential changes in convective development or broader-scale compensatory subsidence.
• The robustness of the observed drying signal was validated through integrated humidity profiles at different vertical layers.

Contributions

• Provides novel insights into the vertical structure of humidity changes due to deforestation, moving beyond surface-level impacts.
• Utilizes high-vertical-resolution GPS radio occultation observations to quantify these changes.
• Highlights the deep coupling between land cover and moisture dynamics in tropical regions.
• Offers critical implications for regional climate modeling and conservation strategies in the Amazon.

Funding

Not explicitly mentioned in the abstract.

Citation

@article{Hierro2025Observational,
  author = {Hierro, R.},
  title = {Observational Evidence of Vertical Drying Over Deforested Amazonia From <scp>GPS</scp> ‐ <scp>RO</scp> Data},
  journal = {International Journal of Climatology},
  year = {2025},
  doi = {10.1002/joc.70184},
  url = {https://doi.org/10.1002/joc.70184}
}