Cheng et al. (2025) The 3D Evolution of Spatiotemporally Contiguous Summer Heatwaves in China: Tracks and Underlying Mechanism Associated With Compound Typhoons and High‐Pressure Systems

⚠️ 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: 2025-11-29
• Authors: Minjie Cheng, Yangchen Lai, Jiayi Xing, Guicai Ning, Shuang Zhou, Yuanjian Yang, Tianliang Zhao, Simone Lolli
• DOI: 10.1029/2025jd044719

Research Groups

Not explicitly mentioned in the abstract.

Short Summary

This study introduces a 3D perspective to track the evolution of regional summer heatwaves (HWs) in China from 1979 to 2022, revealing that the interactions between inland high-pressure systems and typhoon tracks critically modulate HW intensity, duration, and affected area.

Objective

• To understand the underlying mechanisms of the evolutions of spatiotemporally contiguous summer heatwaves (HWs) by tracking their 3D (latitude × longitude × time) characteristics and investigating how compound typhoons and high-pressure systems influence them.

Study Configuration

• Spatial Scale: Regional summer heatwaves in China.
• Temporal Scale: 1979–2022 (44 years).

Methodology and Data

• Models used: Not explicitly mentioned, likely an observational or reanalysis-based analysis of atmospheric conditions.
• Data sources: Not explicitly mentioned, likely observational or reanalysis data of temperature and atmospheric pressure/wind fields.

Main Results

• A 3D perspective (latitude × longitude × time) was introduced to continuously track the horizontal evolution of heatwaves (HWs).
• The characteristics (intensity, duration, affected area) of regional summer HWs in China during 1979–2022 were investigated.
• 29 HWs were identified whose dynamic evolutions were influenced by compound typhoons and high-pressure systems.
• High-pressure systems contribute to the triggering and maintenance of regional HWs through enhanced surface heating and subsidence warming.
• Typhoon tracks modulate the retreat of regional HWs.
• Westward-moving typhoons, influenced by easterly airflows on the southern edge of strong inland high-pressure systems, force the high-pressure system to slowly retreat eastward, resulting in long-duration and large-affected-area HWs.
• Northeastward-moving typhoons quickly cut weak inland high-pressure systems, which in turn promotes the typhoon's northeastward movement, leading to low-intensity, short-duration, and small-affected-area HWs.

Contributions

• Introduces a novel 3D perspective for tracking the spatiotemporal evolution of heatwaves.
• Systematically reveals the complex interactions between inland high-pressure systems and typhoon tracks as a key mechanism modulating regional heatwave characteristics.
• Provides new insights that can improve the warning and forecasting capabilities for the 3D evolution of spatiotemporally contiguous heatwaves.

Funding

Not mentioned in the abstract.

Citation

@article{Cheng20253D,
  author = {Cheng, Minjie and Lai, Yangchen and Xing, Jiayi and Ning, Guicai and Zhou, Shuang and Yang, Yuanjian and Zhao, Tianliang and Lolli, Simone},
  title = {The 3D Evolution of Spatiotemporally Contiguous Summer Heatwaves in China: Tracks and Underlying Mechanism Associated With Compound Typhoons and High‐Pressure Systems},
  journal = {Journal of Geophysical Research Atmospheres},
  year = {2025},
  doi = {10.1029/2025jd044719},
  url = {https://doi.org/10.1029/2025jd044719}
}