Li et al. (2026) Hourly Atmospheric Heat Source Over the Tibetan Plateau Derived From FY‐4A Geostationary Satellite Imagery and Multisource Data

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Identification

• Journal: Journal of Geophysical Research Atmospheres
• Year: 2026
• Date: 2026-07-15
• Authors: Zhaoyang Li, Lei Zhong Lei Zhong, Yaoming Ma, Mijun Zou, Weiqiang Ma, Zhipeng Xie, Yuting Qi, Liqin Cai, Qiyue Chen
• DOI: 10.1029/2026jd047184

Research Groups

• Institute of Atmospheric Physics, Chinese Academy of Sciences
• University of Science and Technology of China

Short Summary

This study generates a high-resolution hourly atmospheric heat source dataset for 2020 over the Tibetan Plateau, resolving thermodynamic hysteresis between radiative forcing and land-atmosphere responses. The findings highlight the importance of sub-daily perturbations in capturing climate dynamics.

Objective

• Investigate the numerical intensity of diabatic heating over the Tibetan Plateau and its impact on the Asian summer monsoon.

Study Configuration

• Spatial Scale: Regional scale, focusing on the Tibetan Plateau.
• Temporal Scale: Hourly resolution for 2020.

Methodology and Data

• Models used: Fengyun 4A geostationary observations with a direct calculation method.
• Data sources: Satellite (Fengyun 4A) and ground-based benchmarks.

Main Results

• High-resolution hourly atmospheric heat source dataset resolves thermodynamic hysteresis between radiative forcing and land-atmosphere responses.
• Sustained Sensible Heat Air Pump effect identified in the western arid zone, with soil thermal inertia maintaining high heating rates past sunset.
• Phase lag of 2–3 hr between radiation peak and latent heat release observed in the eastern humid zone.

Contributions

• Provides critical observational constraints for correcting phase biases and energy intensity in convective parameterization schemes.
• Highlights the necessity of resolving sub-daily perturbations to accurately capture climate dynamics over the Tibetan Plateau.

Funding

• National Natural Science Foundation of China (Grant No. 91837204)
• Chinese Academy of Sciences Strategic Pioneer Program (XDA19040202)

Citation

@article{Li2026Hourly,
  author = {Li, Zhaoyang and Zhong, Lei Zhong Lei and Ma, Yaoming and Zou, Mijun and Ma, Weiqiang and Xie, Zhipeng and Qi, Yuting and Cai, Liqin and Chen, Qiyue},
  title = {Hourly Atmospheric Heat Source Over the Tibetan Plateau Derived From FY‐4A Geostationary Satellite Imagery and Multisource Data},
  journal = {Journal of Geophysical Research Atmospheres},
  year = {2026},
  doi = {10.1029/2026jd047184},
  url = {https://doi.org/10.1029/2026jd047184}
}