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Volume 16
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10.3390/rs16203779
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Article

Relationship between Tibetan Plateau Surface Heat Fluxes and Daily Heavy Precipitation in the Middle and Lower Yangtze River Basins (1980–2022)

by
Lu Li
1,2,
Xiaohua Dong
1,2,*,†,
Yaoming Ma
1,3,4,5,6,7,8,†,
Hanyu Jin
9,10,
Chong Wei
1,2 and
Bob Su
11
1
College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China
2
Engineering Research Center for the Ecological Environment of the Three Gorges Reservoir Area, Ministry of Education, Yichang 430072, China
3
Land-Atmosphere Interaction and Its Climatic Effects Group, State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
4
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
5
College of Atmospheric Science, Lanzhou University, Lanzhou 730000, China
6
National Observation and Research Station for Qomolongma Special Atmospheric Processes and Environmental Changes, Dingri 858200, China
7
Kathmandu Center of Research and Education, Chinese Academy of Sciences, Beijing 100101, China
8
China-Pakistan Joint Research Center on Earth Sciences, Chinese Academy of Sciences, Islamabad 45320, Pakistan
9
Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650504, China
10
Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security, Yunnan University, Kunming 650504, China
11
Faculty of Geo-Information Science and Earth Observation, University of Twente, 7500 AE Enschede, The Netherlands
 
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Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Remote Sens. 2024, 16(20), 3779; https://doi.org/10.3390/rs16203779
Submission received: 23 August 2024 / Revised: 8 October 2024 / Accepted: 10 October 2024 / Published: 11 October 2024
(This article belongs to the Special Issue Land-Atmosphere Interactions and Effects on the Climate of the Tibetan Plateau and Surrounding Regions III)
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Abstract

Variable heat fluxes over the Tibetan Plateau (TP) interact thermally with the atmosphere, affecting weather in surrounding areas, particularly in the Middle and Lower Yangtze River (MLYR). However, the circulation patterns and time-lag effects between TP heat fluxes and MLYR precipitation remain unclear. This study identified 577 large-scale daily heavy precipitation events (LSDHPEs) in the MLYR from 1980 to 2022. We analyzed the weather causation and spatiotemporal correlations between the TP surface heat fluxes and MLYR LSDHPEs using self-organizing map clustering, singular value decomposition, and harmonic analysis of time series. The results found two dominant synoptic patterns of LSDHPEs at 500 hPa: one, driven by anticyclonic and cyclonic circulations coinciding with shifts in the West Pacific subtropical high and South Asian high, increased from 2000 to 2022; the other, influenced by MLYR cyclonic circulation, showed a significant decrease. For the first time, we revealed lagged effects of the latent heat anomalies (with a lag time of 1–10 d and 130–200 d) and sensible heat anomalies (with a lag time of 2–4 months) over the TP during LSDHPEs in the MLYR. The results may enhance our understanding of TP heat flux anomalies as precursor signals for early warning of heavy rainfall and flooding in the MLYR.
Keywords: large-scale daily heavy rainfall event; surface heat flux; self-organizing map; singular value decomposition; Tibetan Plateau; Middle and Lower Yangtze River large-scale daily heavy rainfall event; surface heat flux; self-organizing map; singular value decomposition; Tibetan Plateau; Middle and Lower Yangtze River

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MDPI and ACS Style

Li, L.; Dong, X.; Ma, Y.; Jin, H.; Wei, C.; Su, B. Relationship between Tibetan Plateau Surface Heat Fluxes and Daily Heavy Precipitation in the Middle and Lower Yangtze River Basins (1980–2022). Remote Sens. 2024, 16, 3779. https://doi.org/10.3390/rs16203779

AMA Style

Li L, Dong X, Ma Y, Jin H, Wei C, Su B. Relationship between Tibetan Plateau Surface Heat Fluxes and Daily Heavy Precipitation in the Middle and Lower Yangtze River Basins (1980–2022). Remote Sensing. 2024; 16(20):3779. https://doi.org/10.3390/rs16203779

Chicago/Turabian Style

Li, Lu, Xiaohua Dong, Yaoming Ma, Hanyu Jin, Chong Wei, and Bob Su. 2024. "Relationship between Tibetan Plateau Surface Heat Fluxes and Daily Heavy Precipitation in the Middle and Lower Yangtze River Basins (1980–2022)" Remote Sensing 16, no. 20: 3779. https://doi.org/10.3390/rs16203779

APA Style

Li, L., Dong, X., Ma, Y., Jin, H., Wei, C., & Su, B. (2024). Relationship between Tibetan Plateau Surface Heat Fluxes and Daily Heavy Precipitation in the Middle and Lower Yangtze River Basins (1980–2022). Remote Sensing, 16(20), 3779. https://doi.org/10.3390/rs16203779

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