Evaluation of the HighResMIP Model Simulations for Warm Season Precipitation on the Eastern Slope of the Qinghai-Xizang Plateau 

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  • 1. Plateau Atmosphere and Environment Key Laboratory of Sichuan ProvinceSchool of Atmospheric SciencesChengdu University of Information TechnologyChengdu 610225SichuanChina
    2. Key Laboratory of Land Surface Process and Climate Change in Cold and Arid RegionsNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000GansuChina
    3. Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041Sichuan,China
    4. Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan ProvinceChengdu 610041SichuanChina

Online published: 2025-06-16

Abstract

This study evaluates the simulation capabilities of 16 models with varying resolutions from the HighResolution Model Intercomparison ProjectHighResMIPin reproducing warm-season precipitation over the eastern slope of the Qinghai-Xizang Plateauusing the CN05. 1 dataset as observational reference. Through comparative analysis of outputs from multiple models against observational datathis study elucidates model strengths and limitations in capturing spatiotemporal variabilityprecipitation intensityand terrain-related mechanisms. Results indicate that high-resolution climate models demonstrate reasonable accuracy in simulating annual and warm-season precipitation spatial patternsthough notable inter-model discrepancies persist. Three models CMCC-CM2-HR4CMCC-CM2-VHR4FGOAL-f3-Hsuccessfully replicate the observed increasing trend in annual precipitationwhile others exhibit stable or decreasing trends. Persistent model deficiencies emerge in simulating precipitation frequency and intensityall models systematically underestimate light precipitation events<1 mm∙d-1while overestimating heavy precipitation frequency>4 mm∙d-1. Medium-to-low-resolution models show a systematic phase lag of approximately 30 days in diurnal precipitation cycles compared to observations. In contrastthe high-resolution models performed better in simulating precipitation frequency than the medium low resolution group. Based on comprehensive evaluation of temporal distributionfrequency characteristicsand model skill scoresthe ECWMF model demonstrates superior performancewhereas the FGOAL-f3-H model exhibits significant negative biases.

Cite this article

YANG Zhou, YANG Xianyu, LÜ Yaqiong, MENG Xianhong, WEN Jun . Evaluation of the HighResMIP Model Simulations for Warm Season Precipitation on the Eastern Slope of the Qinghai-Xizang Plateau [J]. Plateau Meteorology, 0 : 1 . DOI: 10.7522/j.issn.1000-0534.2024.00112

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