Zhou et al. (2025) Evaluation of the Linkage Between the Variations in Jet Stream Shape and Surface Air Temperature From CMIP6

⚠️ 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: 2025-10-19
• Authors: Wenyu Zhou, Shan Zhao, Anqi Liu, Ning Wang, Danqing Huang
• DOI: 10.1002/joc.70164

Research Groups

Not specified in the abstract.

Short Summary

This study evaluates the capability of CMIP6 models (AMIP and historical runs) to simulate the relationship between jet stream shapes and surface air temperature, finding that AMIP simulations generally outperform historical runs and that models capture key regional temperature anomalies linked to jet patterns and Arctic Oscillation-like circulation.

Objective

• To assess the ability of CMIP6 models to simulate the relationship between jet stream shapes and surface air temperature (SAT), using both AMIP and historical runs.

Study Configuration

• Spatial Scale: Mid- to high-latitudes, with specific focus on East Asia and North America.
• Temporal Scale: Interannual variability.

Methodology and Data

• Models used: CMIP6 models (AMIP and historical runs).
• Data sources: Model output from CMIP6 simulations. Evaluation metrics included weighted Taylor scores, interannual variability skill (IVS) scores, and jet stream indices.

Main Results

• AMIP simulations generally outperform historical runs in representing both jet streams and surface air temperature (SAT).
• Most models successfully capture SAT anomalies over East Asia and North America, indicating a robust link between regional temperature extremes and distinct jet patterns.
• Models reproduce sea level pressure anomalies resembling the Arctic Oscillation (AO), suggesting that AO-like circulation is a key driver of temperature extremes across different jet groups.
• Horizontal temperature advection anomalies closely match SAT anomalies, highlighting their primary role in shaping temperature distributions in critical regions.

Contributions

• Provides a comprehensive assessment of CMIP6 models' skill in simulating the complex relationship between jet stream shapes and surface air temperature.
• Identifies the relative performance of AMIP versus historical CMIP6 runs for jet stream and SAT representation.
• Reinforces the robust link between regional temperature extremes and distinct jet patterns, as well as the influence of AO-like circulation, within CMIP6 models.
• Highlights the importance of horizontal temperature advection as a primary thermodynamic driver for temperature distributions in key regions.

Funding

Not specified in the abstract.

Citation

@article{Zhou2025Evaluation,
  author = {Zhou, Wenyu and Zhao, Shan and Liu, Anqi and Wang, Ning and Huang, Danqing},
  title = {Evaluation of the Linkage Between the Variations in Jet Stream Shape and Surface Air Temperature From <scp>CMIP6</scp>},
  journal = {International Journal of Climatology},
  year = {2025},
  doi = {10.1002/joc.70164},
  url = {https://doi.org/10.1002/joc.70164}
}