Huang et al. (2025) Seasonal and Spatial Variations of Vertical Profile Heating (VPH) Latent Heat Over Northern East Asia Based on GPM Observations

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

Identification

• Journal: Journal of Geophysical Research Atmospheres
• Year: 2025
• Date: 2025-11-11
• Authors: C. Huang, Rui Li
• DOI: 10.1029/2025jd044415

Research Groups

Not specified in the abstract.

Short Summary

This study quantifies the three-dimensional structure of latent heating (LH) from precipitation over northern East Asia using GPM observations, documenting its seasonal, meridional, and land-sea contrasts. It reveals that summer precipitation exhibits stronger and higher LH, with a poleward decrease in LH heights and coastal amplification, providing a crucial midlatitude LH climatology.

Objective

• To quantify the three-dimensional structure of latent heating (LH) from precipitation over northern East Asia (30°–60°N, 105°–140°E) and document its seasonal, meridional, and land-sea contrasts.

Study Configuration

• Spatial Scale: Northern East Asia (30°–60°N, 105°–140°E)
• Temporal Scale: 2014–2021

Methodology and Data

• Models used: Vertical Profile Heating (VPH) method; GPM Goddard convective-stratiform heating (CSH) product; Spectral Latent Heating (SLH) product (for intercomparison).
• Data sources: Global Precipitation Measurement (GPM) observations (specifically mentions DPR for limitations).

Main Results

• Summer precipitation exhibits higher rain tops, elevated positive/negative turning points, and stronger latent heating (LH) compared to spring/autumn, with peak release occurring 1–2 km higher for comparable near-surface rain rates or echo-top heights.
• From 30°N to 60°N, the heights of maximum heating, the sign-change (turning) levels, and the LH top all decrease poleward by approximately 1–2 km, consistent with lower freezing levels in colder climates.
• The horizontal pattern of LH mirrors both latitude and land-sea distribution, with heating at approximately 5 km amplified over coastal/peninsular regions compared with inland mountains.
• Spectral analyses indicate that increasing precipitation intensity shifts profiles toward convective-type, column-deep heating and lowers the turning level.
• Intercomparisons with GPM CSH and SLH products confirm the temporal and vertical robustness of these patterns; mid-tropospheric heating is comparable across data sets, while VPH retrieves markedly stronger low-level cooling than CSH/SLH.
• Uncertainties include DPR's limited snowfall sensitivity (leading to winter underestimation) and potential low-level cold bias in VPH where raindrop breakup mimics evaporation.

Contributions

• Provides a midlatitude latent heating (LH) climatology for northern East Asia.
• Establishes a benchmark for models simulating LH.
• Clarifies seasonal and meridional controls on the vertical structure of LH.
• Informs simulations of monsoon evolution and extratropical cyclone development.

Funding

Not specified in the abstract.

Citation

@article{Huang2025Seasonal,
  author = {Huang, C. and Li, Rui},
  title = {Seasonal and Spatial Variations of Vertical Profile Heating (VPH) Latent Heat Over Northern East Asia Based on GPM Observations},
  journal = {Journal of Geophysical Research Atmospheres},
  year = {2025},
  doi = {10.1029/2025jd044415},
  url = {https://doi.org/10.1029/2025jd044415}
}