Modelling analysis of the potential impact of large reservoir on heatwave events
The impact of large reservoirs on regional climate extremes, such as heatwaves, is not yet well understood, primarily due to the complex interactions of heat, moisture, and momentum over mountainous terrains and the dynamic nature of water surfaces. In this study, we investigate the role of the Miyu...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23009834 |
| _version_ | 1797683076135911424 |
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| author | Jianming Qin Yue Xing Jiahui Liu Pouria Nakhaei Walaa Hamamy Bu Li Long Yang Guangheng Ni |
| author_facet | Jianming Qin Yue Xing Jiahui Liu Pouria Nakhaei Walaa Hamamy Bu Li Long Yang Guangheng Ni |
| author_sort | Jianming Qin |
| collection | DOAJ |
| description | The impact of large reservoirs on regional climate extremes, such as heatwaves, is not yet well understood, primarily due to the complex interactions of heat, moisture, and momentum over mountainous terrains and the dynamic nature of water surfaces. In this study, we investigate the role of the Miyun Reservoir (MYR), one of the largest reservoirs in northern China, covering an extensive water surface area of 180 km2, in influencing a severe heatwave event that occurred southwest of MYR from 2nd to 6th July 2010. Using high-resolution simulations from the Weather Research and Forecasting Model, our findings reveal contrasting thermodynamic effects of MYR on near-surface air temperatures, with up to three degrees of warming during night-time and up to five degrees of cooling during daytime, with a spatial extent of impact reaching up to 20 km away from the reservoir. These impacts are attributed to a combination of synergized land-lake breeze and mountain-valley winds during the night, leading to the transport of warm air plumes downwind towards the plain and intensifying the heatwave. Furthermore, we observe an increase in surface water vapor brought to higher atmospheric levels due to strong vertical mixing, resulting in lowered surface-specific humidity. Our study emphasizes the dual role of large reservoirs in exacerbating remote heatwaves while providing cooling effects in their proximity. Gaining a comprehensive understanding of the intricate interactions between reservoirs, topography, and regional climate extremes is of paramount importance for accurate climate risk assessments and the formulation of effective mitigation strategies.. |
| first_indexed | 2024-03-12T00:09:13Z |
| format | Article |
| id | doaj.art-7a9ebd1878694471869cfb744a8e3fd6 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-12T00:09:13Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-7a9ebd1878694471869cfb744a8e3fd62023-09-16T05:30:08ZengElsevierEcological Indicators1470-160X2023-10-01154110841Modelling analysis of the potential impact of large reservoir on heatwave eventsJianming Qin0Yue Xing1Jiahui Liu2Pouria Nakhaei3Walaa Hamamy4Bu Li5Long Yang6Guangheng Ni7State Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Geography and Ocean Science, Nanjing University, Nanjing 210023, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China; Corresponding author.The impact of large reservoirs on regional climate extremes, such as heatwaves, is not yet well understood, primarily due to the complex interactions of heat, moisture, and momentum over mountainous terrains and the dynamic nature of water surfaces. In this study, we investigate the role of the Miyun Reservoir (MYR), one of the largest reservoirs in northern China, covering an extensive water surface area of 180 km2, in influencing a severe heatwave event that occurred southwest of MYR from 2nd to 6th July 2010. Using high-resolution simulations from the Weather Research and Forecasting Model, our findings reveal contrasting thermodynamic effects of MYR on near-surface air temperatures, with up to three degrees of warming during night-time and up to five degrees of cooling during daytime, with a spatial extent of impact reaching up to 20 km away from the reservoir. These impacts are attributed to a combination of synergized land-lake breeze and mountain-valley winds during the night, leading to the transport of warm air plumes downwind towards the plain and intensifying the heatwave. Furthermore, we observe an increase in surface water vapor brought to higher atmospheric levels due to strong vertical mixing, resulting in lowered surface-specific humidity. Our study emphasizes the dual role of large reservoirs in exacerbating remote heatwaves while providing cooling effects in their proximity. Gaining a comprehensive understanding of the intricate interactions between reservoirs, topography, and regional climate extremes is of paramount importance for accurate climate risk assessments and the formulation of effective mitigation strategies..http://www.sciencedirect.com/science/article/pii/S1470160X23009834Large reservoirHeatwaveThermodynamic impactLand-lake interactionWeather Research and Forecasting ModelMiyun reservoir |
| spellingShingle | Jianming Qin Yue Xing Jiahui Liu Pouria Nakhaei Walaa Hamamy Bu Li Long Yang Guangheng Ni Modelling analysis of the potential impact of large reservoir on heatwave events Ecological Indicators Large reservoir Heatwave Thermodynamic impact Land-lake interaction Weather Research and Forecasting Model Miyun reservoir |
| title | Modelling analysis of the potential impact of large reservoir on heatwave events |
| title_full | Modelling analysis of the potential impact of large reservoir on heatwave events |
| title_fullStr | Modelling analysis of the potential impact of large reservoir on heatwave events |
| title_full_unstemmed | Modelling analysis of the potential impact of large reservoir on heatwave events |
| title_short | Modelling analysis of the potential impact of large reservoir on heatwave events |
| title_sort | modelling analysis of the potential impact of large reservoir on heatwave events |
| topic | Large reservoir Heatwave Thermodynamic impact Land-lake interaction Weather Research and Forecasting Model Miyun reservoir |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23009834 |
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