Contribution of urbanization to the changes in extreme climate events in urban agglomerations across China

Lin, Lijie; Gao, Tao; Luo, Ming; Ge, Erjia; Yang, Yuanjian; Liu, Zhen; Zhao, Yongquan; Ning, Guicai

doi:10.1016/j.scitotenv.2020.140264

Cited by 95 publications

(58 citation statements)

References 71 publications

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“…There are 14 strong UHI events (bold), four weak UHI events ( * ), and three weak urban cold island events, showing that most extreme precipitation events occurred under the strong UHI situation before precipitation. This implies that urban heat island effect has a potential role in promoting the occurrences of local extreme precipitation events in warm sector, which is coincide with previous studies over south China (Su et al, 2019;Lin et al, 2020).…”

Section: Potential Association Between Extreme Precipitation and Urbanizationsupporting

confidence: 91%

“…Su et al (2019) analyzed the variation in presummer precipitation in South China from 1979 to 2015 and its relationship with urbanization, the results also revealed that the intensity of precipitation and the occurrence of extreme precipitation events during the presummer season in South China have increased significantly, and the upward trend is much more significant in urban areas than in non-urban areas. This is because the release of anthropogenic heat and the aerosols produced by urbanization have changed the radiation budget in urban areas, which is conducive to enhanced water vapor transport and upward convergence movement, leading to more frequent extreme precipitation events (Lin et al, 2020).…”

Section: Temporal and Spatial Characteristics Of Different Wshr Typesmentioning

confidence: 99%

“…Previous studies have revealed urban areas are more exposed to extreme precipitation than non-urban areas, due to changed land cover, enhanced urban heat island (UHI) and resultant specific local circulation in urban areas (Su et al, 2019;Wu et al, 2019;Lin et al, 2020;Zheng et al, 2020). For example, when there are sufficient water vapors in the lower-level atmosphere, UHI can induce strong updrafts to easily trigger moist convection, enhancing precipitating convective systems with extreme precipitation (Han and Baik, 2008;Su et al, 2019;Lin et al, 2020). To explore the relationship between the six extreme precipitation events mentioned above and UHI effect, the urban heat island intensity (UHII) is introduced (Wu, 2019), which is defined as:…”

Section: Potential Association Between Extreme Precipitation and Urbanizationmentioning

confidence: 99%

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Modulations of Synoptic Weather Patterns on Warm-Sector Heavy Rainfall in South China: Insights From High-Density Observations With Principal Component Analysis

Sheng

et al. 2021

Front. Earth Sci.

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Based on hourly high-density precipitation data in Guangdong Province, China, 134 warm-sector heavy rainfall (WSHR) events were selected from 2016 to 2018. The synoptic weather patterns of these WSHR events were objectively classified using T-mode principal component analysis. Six WSHR weather patterns were identified, as follows: Type 1-southwest (T1-SW), Type 2-southeast (T2-SE), Type 3-coastal jets I (T3-CJI), Type 4-coastal jets II (T4-CJ II), Type 5-western low vortex (T5-WL), and Type 6-high-pressure (T6-HP). Three high-occurrence WSHR centers were finally extracted: the areas of Yangjiang and Shanwei, and the urban agglomeration of Guangdong–Hong Kong–Macao Greater Bay Area (GBA). Compared with the other five patterns, T6-HP is a newly identified WSHR weather pattern, which is related to a local/small-scale weather system in the context of anomalous northward movement of the western Pacific subtropical high. Notably, the precipitation area of the T6-HP type of WSHR event is smaller, which can only be captured by high-density observations. In addition, the occurrence locations of six large-scale extreme precipitation events were closely associated with the urban agglomerations in GBA, implying that urbanization plays an important role in extreme magnitudes of large-scale WSHR events and their occurrence centers.

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Section: Potential Association Between Extreme Precipitation and Urbanizationsupporting

confidence: 91%

Section: Temporal and Spatial Characteristics Of Different Wshr Typesmentioning

confidence: 99%

Section: Potential Association Between Extreme Precipitation and Urbanizationmentioning

confidence: 99%

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Modulations of Synoptic Weather Patterns on Warm-Sector Heavy Rainfall in South China: Insights From High-Density Observations With Principal Component Analysis

Sheng

et al. 2021

Front. Earth Sci.

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“…The long-term trends of mean and extreme heat stress indicators are estimated by the simple linear regression, and their statistical significances are evaluated by the non-parametric modified Mann-Kendall test, which considers the autocorrelation in the time series (Hamed & Rao, 1998). Similar to previous studies (e.g., Ren and Zhou (2014), Lin et al (2020)), for significant urbanization effects and their relative contribution, it is required that the urban trend ( ) should be statistically significant at the 0.05 level, as is the denominator in the calculation of urbanization contribution.…”

Section: Accepted Articlementioning

confidence: 99%

Increasing Human‐Perceived Heat Stress Risks Exacerbated by Urbanization in China: A Comparative Study Based on Multiple Metrics

Luo

Lau

2021

Earth's Future

Self Cite

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 All indicators of heat stress increase in nearly all major urban agglomerations (UAs), especially in more urbanized and populated UAs  On average, local urbanization contributes to ≈1/4 (1/2) of the total increase in mean (extreme) heat stress in urban core areas of UAs  Urbanization tends to have a strong warming (cooling or weak warming) effect on heat stress in wet (arid) areas and low (high) altitudes Accepted ArticleThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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“…In particular, due to the rapid increase in carbon emissions, greenhouse gases act on climate change, causing global warming. Although the cities within the GZPUA are all inland cities, the probability of disasters such as typhoons, hurricanes, and tsunamis is extremely small, but it is worth noting that global warming has increased the probability of extreme weather (Ren and Zhou, 2014;Lin et al, 2020). The natural disaster crisis caused by climate change has become a part of the urban crisis, which has greatly affected the development of urban economy, society and culture.…”

Section: Introductionmentioning

confidence: 99%

The Coupling Coordinated Relationship Between New-type Urbanization, Eco-Environment and its Driving Mechanism: A Case of Guanzhong, China

Dong

Shang

Ali

et al. 2021

Front. Environ. Sci.

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As an important platform for participating in international competition and cooperation, supporting economic growth and promoting coordinated regional development, urban agglomeration plays an important role in China’s economic, social and urbanization development. At this time, the Guanzhong Plain urban agglomeration (GZPUA), as the second largest urban agglomeration in western China, has a moderate population density. The high demand and high input of resources for population growth make the regional ecological destruction and environmental pollution more prominent. Therefore, it is of great practical significance to study the coordinated development of urbanization and ecological environment in GZPUA. By using the panel data of the GZPUA of China between 2008 and 2017, this study constructed evaluation index system of new-type urbanization and ecological environment quality and calculated the weights of the indices within the evaluation system via the improved entropy weight method, finally determined the new-type urbanization and ecological environment quality of each city. Then the coupling coordination degree model was used to analyze the coupling coordination relationship between two systems of GZPUA and their coupling stages and levels. In addition, the driving mechanism of their coordination degree was explored by using geographic detector method. The results show that: 1) The GZPUA new-type urbanization quality is characterized by both slow growth except Xi’an by a rapid increase. The ecological environment quality is characterized by both slow growth and fluctuations, except Qingyang by a decrease. There are spatial differences between the quality of new-type urbanization and the quality of ecological environment. 2) The 11 cities can be divided into high-high type (Xi’an), high-low type (Xianyang, Yuncheng, Linfen), low-low type (Pingliang, Weinan), and low-high type (Shangluo, Tianshui, Qingyang), different types should take different development paths. 3) The coordination degree between urbanization and ecological environment quality in GZPUA showed an upward trend, and formed a spatial distribution pattern with Xi’an as the core and decreasing to the outer circle cities, with regional differences. 4) The coordinated development of new-type urbanization and ecological environment is a process in which various driving factors act on different driving forces. These driving forces can be summarized as market driving force, endogenous driving force, outward driving force and administrative driving force. Based on the current situation of coordinated development of new-type urbanization and ecological environment in the GZPUA, it is recommended to promote the coordinated development of urbanization and ecological environment according to local conditions, strengthen the urbanization market mechanism, and optimize the industrial layout. Further, guide the flow of various factors across regions, strengthen technological innovation on the basis of breaking regional divisions, narrow the gap between urban and rural areas, establish the concept of coordinated development, and give play to the government’s “visible hand” role.

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Contribution of urbanization to the changes in extreme climate events in urban agglomerations across China

Cited by 95 publications

References 71 publications

Modulations of Synoptic Weather Patterns on Warm-Sector Heavy Rainfall in South China: Insights From High-Density Observations With Principal Component Analysis

Modulations of Synoptic Weather Patterns on Warm-Sector Heavy Rainfall in South China: Insights From High-Density Observations With Principal Component Analysis

Increasing Human‐Perceived Heat Stress Risks Exacerbated by Urbanization in China: A Comparative Study Based on Multiple Metrics

The Coupling Coordinated Relationship Between New-type Urbanization, Eco-Environment and its Driving Mechanism: A Case of Guanzhong, China

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