Identifying the dominant impact factors and their contributions to heatwave events over mainland China

Liang, Liaofeng; Yu, Linfei; Wang, Zhonggen

doi:10.1016/j.scitotenv.2022.157527

Cited by 21 publications

(7 citation statements)

References 89 publications

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“…This noteworthy increase in earlier 2000s have a similar trend with characteristic of heatwaves in EMC (Xie et al., 2020; Zhou et al., 2016), especially in southern EMC (You et al., 2017). After 2000, the frequency, duration and maximum intensity of heatwaves in EMC have significantly increased (Ji et al., 2023; Liang et al., 2022; Yao et al., 2023). Therefore, more frequent and severe heatwaves since 2000 may cause an increase incidence of hot‐dry days, leading to a rapidly rising trend of amplification indices.…”

Section: Resultsmentioning

confidence: 99%

Amplification of Coupled Hot‐Dry Extremes Over Eastern Monsoon China

Zhang,

Gu,

Slater

et al. 2023

Earth's Future

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High air temperatures and low atmospheric humidity can result in severe disasters such as flash droughts in regions characterized by high humidity (monsoon regions). However, it remains unclear whether responses of hot extremes to warming temperature are amplified on dry days as well as the response of dry extremes on hot days. Here, taking eastern monsoon China (EMC) as a typical monsoon region, we find a faster increase in air temperature on drier summer days, and a faster decrease in atmospheric humidity on hotter days, indicating “hotter days get drier” and “drier days get hotter” (i.e., coupling hotter and drier extremes), especially in southern EMC. The southern EMC is also a hotspot where the coupling hot‐dry extremes has become significantly stronger during the past six decades. The stronger hot‐dry coupling in southern EMC is associated with anomalies in large‐scale circulations, such as reduced total cloud cover, abnormal anticyclones in the upper atmosphere, intense descending motion, and strong moisture divergence over this region. Land‐atmosphere feedback enhance the hot‐dry coupling in southern EMC by increasing land surface dryness (seen as a decrease in the evaporation fraction). The decreasing evaporation fraction is associated with drying surface soil moisture, controlled by decreases in pre‐summer 1‐m soil moisture and summer‐mean precipitation. Given hot extremes are projected to increase and atmospheric humidity is predicted to decrease in the future, it is very likely that increasing hot‐dry days and associated disasters will be witnessed in monsoon regions, which should be mitigated against by adopting adaptive measures.

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Section: Resultsmentioning

confidence: 99%

Amplification of Coupled Hot‐Dry Extremes Over Eastern Monsoon China

Zhang,

Gu,

Slater

et al. 2023

Earth's Future

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“…The point-to-pixel analysis method is employed to match the series of heatwave metrics data, calculated based on T air , with the corresponding pixels of gridded LST data. Only pixels that have at least one available and used a ground-based gauge for the calculation are included [102,103]. Given the extensive research area and the time required for retrieving daily MODIS data, a sampling design with a buffer zone at the confluence of the regular 5 km × 5 km latitude and longitude grid is adopted for validating T air and LST heatwaves.…”

Section: Spatial Homogeneity In Correlation Analysismentioning

confidence: 99%

Spatial-Multitemporal Analysis of Heatwaves in Thailand: Discrepancies between In-Situ Air Temperature and Remote Sensing-Derived Land Surface Temperature

Chongtaku,

Taparugssanagorn,

Miyazaki

et al. 2024

Preprint

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In light of the critical and emerging global challenge posed by the increasing frequency and severity of heatwaves in recent decades, this study demonstrates a practical and robust workflow that bridges the gap in understanding how the effective integration of remote sensing data with ground-based observations can facilitate a comprehensive assessment of spatiotemporal heatwave patterns and trends in the central region of Thailand. This research transcends traditional methods, utilizing air temperature (Tair) and satellite-derived land surface temperature (LST) data from 1981 to 2019. Results exhibit that an analysis of Tair indicates increasing daytime heatwaves in peri-urban areas, with significant trends in heatwave number (HWN), heatwave frequency (HWF), and heatwave duration (HWD), heatwave amplitude (HWA) rises in urban settings while nighttime heatwaves significantly intensify in rural locales. Notably, LST trends reveal varied patterns, with peri-urban areas showing marked daytime increases in heatwave magnitude (HWM), HWA, and HWF. Correlation analysis (p=0.05) highlights strong daytime associations between Tair and LST in rural (HWN, HWF, HWD, r&gt;0.90) and peri-urban (HWM, HWA, r&gt;0.65) regions. Overall, this study advances approaches to the adaptable measurement and spatial-temporal pattern of heatwave-related risk areas, providing insights for decision-makers to develop sustainable practices and strategies for climate change adaptation.

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“…Due to the large amount of artificial heating, the use of high thermal storage materials such as concrete buildings and roads and the reduction of green spaces, the city has become “high-temperature”, which is called the urban heat island effect. , The heat island effect may bring many problems, including deterioration of the living environment, increase of energy consumption, increase of ground ozone concentration, and even endanger people’s life, health, and safety. , Therefore, the research on reducing the urban heat island effect is of great significance in maintaining sustainable development of a city.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 The heat island effect may bring many problems, including deterioration of the living environment, 3 increase of energy consumption, 4 increase of ground ozone concentration, 5 and even endanger people's life, health, and safety. 6,7 Therefore, the research on reducing the urban heat island effect is of great significance in maintaining sustainable development of a city.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Novel Structure-Designed Porous Ceramsite for Water Retention

Zheng,

Li,

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

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Identifying the dominant impact factors and their contributions to heatwave events over mainland China

Cited by 21 publications

References 89 publications

Amplification of Coupled Hot‐Dry Extremes Over Eastern Monsoon China

Amplification of Coupled Hot‐Dry Extremes Over Eastern Monsoon China

Spatial-Multitemporal Analysis of Heatwaves in Thailand: Discrepancies between In-Situ Air Temperature and Remote Sensing-Derived Land Surface Temperature

Preparation of a Novel Structure-Designed Porous Ceramsite for Water Retention

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