Spatial and temporal characteristics of tropical nights in Seoul

Zheng, Haiyan; Yu, Jinhang; Lim, Joo-Hoon; Lee, Kyoo-Seock

doi:10.1007/s10661-020-08608-4

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…In addition, these changes occur in low-lying areas with high population density, where the urban heat island effect may further amplify these extremes [22,39], as we observed in this study with larger increases in urban regions. Other studies from Georgian Territory, the Spanish Mediterranean coast, and Seoul, also showed a significant increase in TNs during the last decades [40][41][42].…”

Section: Hazardmentioning

confidence: 99%

Trends in tropical nights and their effects on mortality in Switzerland across 50 years

et al. 2023

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Increasing temperatures and more frequent and severe heat waves in Switzerland are leading to a larger heat-related health burden. Additionally, high nighttime temperatures or tropical nights (TNs) also affect the well-being of the population. We aimed to assess the spatiotemporal patterns in the frequency and the exposed population to TNs, and its mortality effect in Switzerland. We identified the TNs (minimum nighttime temperature ≥ 20°C) in each district in Switzerland using population-weighted hourly temperature series (ERA5-Land reanalysis data set) between 1970–2019. We assessed the change in the frequency of TNs and the exposed population per district and decade through a spatiotemporal analysis. We then performed a case time series analysis to estimate the TN-mortality association (controlled for the daily mean temperature) by canton and for the main 8 cities using data on all-cause mortality at the district level between 1980–2018. We found an overall increase in the annual frequency of TN (from 90 to 2113 TNs per decade) and the population exposed (from 3.7 million to over 157 million population-TN per decade) in Switzerland between 1970–2019, mainly in the cities of Lausanne, Geneva, Basel, Lugano, and Zurich, and during the last two decades. The TN-mortality association was highly heterogeneous across cantons and cities. In particular, TNs were associated with an increase of 22–37% in the risk of mortality in the cantons of Vaud (Relative risk: 1.37 (95%CI:1.19–1.59)), Zurich (1.33 (0.99–1.79)), Lucerne (1.33 (0.95–1.87)) and Solothurn (1.22 (0.88–1.69)), while a negative association was observed in Ticino (0.51 (0.37–0.7)), Basel-Land (0.4 (0.24–0.65)) and Thurgau (0.65 (0.5–0.85)), and a null association in the remaining cantons. Our findings indicate that TNs are a relevant health hazard for a large part of the Swiss population leading to potentially larger impacts in the future due to climate change and increasing urbanization.

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Section: Hazardmentioning

confidence: 99%

Trends in tropical nights and their effects on mortality in Switzerland across 50 years

et al. 2023

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“…It was believed that tropical nights are a local and their frequency had a relationship with land cover changes by the urbanization process [5]. There were more tropical nights at high-rise buildings and commercial business district areas with low sky view factors than in mountain foothill areas [6]. It goes without saying that in urban stations, tropical night occurrences are climatologically higher, more active and frequent.…”

Section: Literature Reviewmentioning

confidence: 99%

Tropical nights (1976–2019) as an indicator of climate change in Ukraine

Klok

Kornus

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents the results of an analysis of the number, frequency and intensity of tropical nights in Ukraine. We have selected such weather stations that are located at different latitudes and correspond with the north, west, east, and south as well as the central part of Ukraine. This was done in order to analyse the differences in tropical nights across latitudes. Also we have weather stations located at the approximately one latitude to analyse how tropical nights vary in longitude. Data from weather stations for 1976-2019 were under analysis. We can say that the increase in the minimum air temperature during summer is on the whole territory of Ukraine. This leads to the fact that since the mid-1990s tropical nights begin to be observed in the east of Ukraine, as well as in the south. After 2000, tropical nights also have begun to be observed in the centre and even in the west of Ukraine. Between two half-periods (1976-1997 and 1998-2019) the increase of number of tropical night events in the south of Ukraine (up to 300 cases) is much more significant than the increase in their number in the northwest (up to 20 cases). As well as the frequency, the intensity of tropical nights also increases. There are cases with minimum daily air temperatures above 25°C. The analysis of the North Atlantic Oscillation (NAC) and the Mediterranean (Cairo-Algeria) indices in the context of explaining the tropical night’s occurrence in Ukraine turned out to be quite effective.

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Unpacking the nonlinear relationships and interaction effects between urban environment factors and the urban nighttime heat index

Park,

Lee

2023

Journal of Cleaner Production

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Spatial and temporal characteristics of tropical nights in Seoul

Cited by 4 publications

References 13 publications

Trends in tropical nights and their effects on mortality in Switzerland across 50 years

Trends in tropical nights and their effects on mortality in Switzerland across 50 years

Tropical nights (1976–2019) as an indicator of climate change in Ukraine

Unpacking the nonlinear relationships and interaction effects between urban environment factors and the urban nighttime heat index

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