Spatially distinct effects of preceding precipitation on heat stress over eastern China

Liu, Xingcai; Tang, Qiuhong; Zhang, Xuejun; Groisman, P. Y.; Sun, Siao; Lu, Hui; Li, Zhe

doi:10.1088/1748-9326/aa88f8

Cited by 13 publications

(12 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…oppressive heat stress in the hottest month in several low latitude areas. It is generally consistent with previous studies in Eastern China (Liu et al 2017) and Illinois of the USA (Ford and Schoof 2016). The larger probability of occurrence of oppressive hot days (above-average NHD-Wx) after wet conditions than that after dry conditions indicates that abundant preceding rainfall favors oppressive hot days in the following month.…”

Section: Discussionsupporting

confidence: 91%

“…The SPI (McKee et al 1993) is widely used as a proxy of soil moisture conditions (e.g. Hirschi et al 2011, Liu et al 2017. Global soil moisture products are also available (e.g.…”

Section: Standardized Precipitation Indexmentioning

confidence: 99%

“…Huber 2010, Im et al 2017). We estimate WBGT from ERA and NCEP using the same equation as Liu et al (2017): WBGT=0.567T+0.393e+3.94, where T is temperature (°C), and e is simultaneous water vapor pressure (hPa) estimated from temperature and dew point temperature in ERA and from specific humidity and surface pressure in NCEP.…”

Section: Heat Stress Indexmentioning

confidence: 99%

“…Strong links between preceding precipitation and oppressive heat stress have been found in Illinois of the USA Schoof 2016, 2017) and Eastern China (Liu et al 2017). To date, however, the influence of preceding wet soil conditions on the development of heat stress is insufficiently well understood in lower latitudes where about 5 billion people live, although considerable heat stress events caused by high temperature and humidity have been reported in these regions (Dunne et al 2013, Im et al 2017.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes

Liu

Tang

Liu

et al. 2019

Environ. Res. Lett.

Self Cite

View full text Add to dashboard Cite

In addition to high temperature, high humidity can have significant consequences on thermal comfort of human beings. The co-occurrence of high temperature and high humidity (so-called 'oppressive hot days') often results in heat stress events, but the extent to which it is affected by preceding surface moisture has not been fully understood to date. In this study, we examine the relations between preceding 3-month standardized precipitation index (SPI) and the number of hot days indicated by the surface air temperature (NHD-Tx) and the wet-bulb globe temperature (NHD-Wx) that combines both temperature and humidity in the hottest month in low latitudes. Results show that, in contrast with the negative correlations between SPI and NHD-Tx, which are associated with the previously reported precipitation deficit-temperature feedback, significant positive correlations between SPI and NHD-Wx are found in some low latitude areas. The probability of above-average NHD-Wx could be ∼30% higher after wet conditions than that after dry conditions in areas like southern South America, some parts of Africa, and West Asia. Hotspot analyses further show that abundant preceding rainfall has an asymmetric impact on oppressive hot days by favoring more above-average NHD-Wx. Our analyses imply that a local feedback may exist between surface moisture and oppressive hot extremes, via which the unbearable heat stress over some parts of the tropics is modulated, controlled, and/or caused by changes in the preceding near-surface humidity/soil moisture. The spatially heterogeneous patterns of the relations between preceding rainfall and heat stress confirm the precipitation deficit-temperature feedback in many areas and reveal the coexistence of surface moisture-oppressive heat stress in several low latitude areas. We emphasize the necessity of considering both feedbacks for a better understanding of the distinct roles of preceding rainfall in the consequent development of heat stress in low latitudes.

show abstract

Section: Discussionsupporting

confidence: 91%

“…The SPI (McKee et al 1993) is widely used as a proxy of soil moisture conditions (e.g. Hirschi et al 2011, Liu et al 2017. Global soil moisture products are also available (e.g.…”

Section: Standardized Precipitation Indexmentioning

confidence: 99%

Section: Heat Stress Indexmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes

Liu

Tang

Liu

et al. 2019

Environ. Res. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, the dry condition may lead to the increase of local temperature due to the land atmosphere interaction during summer, especially in transitional climate regimes (Hirschi et al 2011, Mueller and Seneviratne 2012, Koster et al 2016. For example, Liu et al (2017) showed that precipitation deficits in the preceding months enhanced the heat stress in northeastern China due to the positive feedback between dry and hot extremes. Finally, the natural variability (e.g.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Changes in the severity of compound drought and hot extremes over global land areas

Hao

Singh

et al. 2018

Environ. Res. Lett.

162

View full text Add to dashboard Cite

Global warming has been shown to affect weather and climate extremes, such as droughts, floods, windstorms, cold waves, and heat waves. A number of studies have focused on the variability of different characteristics of these extremes, including their frequency, spatial extent, and severity. Recently, the study of compound extremes, defined by the co-occurrence of multiple events with extreme impacts, has attracted much attention. The compound dry and hot extreme is one type of compound extreme and may lead to detrimental impacts on the society and ecosystem. Most previous studies have focused on changes in the frequency or spatial extent of compound dry and hot extremes, while assessments of changes in the severity of compound extremes are lacking. This study evaluated changes in the severity of compound dry and hot extremes at the global scale, based on the Standardized Dry and Hot Index (SDHI). A significant increase in the severity of compound dry and hot extremes (or decrease of the SDHI value) during the warm season was found in western US, northern South America, western Europe, Africa, western Asia, southeastern Asia, southern India, northeastern China and eastern Australia. Moreover, a significant temporal increase in the average severity of the hottest month over global land areas was also observed. Results from this study highlight the increased severity of compound dry and hot extremes over global land areas and call for improved efforts on assessing the impact of compound extremes under global warming.

show abstract

Characteristics of summer heat stress in China during 1979‒2014: climatology and long-term trends

Luo

2019

Clim Dyn

View full text Add to dashboard Cite

Spatially distinct effects of preceding precipitation on heat stress over eastern China

Cited by 13 publications

References 60 publications

The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes

The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes

Changes in the severity of compound drought and hot extremes over global land areas

Characteristics of summer heat stress in China during 1979‒2014: climatology and long-term trends

Contact Info

Product

Resources

About