Synoptic-scale characteristics and atmospheric controls of summer heat waves in China

Wang, Weiwen; Zhou, Wen; Li, Xiuzhen; Wang, Xin; Wang, Dongxiao

doi:10.1007/s00382-015-2741-8

Cited by 157 publications

(105 citation statements)

References 86 publications

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“…Correspondence to: S. Sugimoto, shiorisug@jamstec.go.jp The Sichuan basin has an area of~190,000 km 2 (Figure 1) and is a major paddy cultivation area in China (Liu et al, 2005). The basin frequently experiences extremely hot summers (Wang et al, 2016;Ye et al, 2014), and mesoscale convective systems generate and develop during the summer (Sugimoto & Ueno, 2012;Ueno et al, 2011), causing flood events on the Yangtze River (Xie & Ueno, 2011). Thus, the Sichuan basin is a remarkable region with respect to the occurrence of extreme summer events, and more accurate simulations would improve our understanding of the physical mechanisms associated with the regional-scale climate over the basin during the summer.…”

Section: 1029/2018jd029434mentioning

confidence: 99%

Modification of Near‐Surface Temperature Over East Asia Associated With Local‐Scale Paddy Irrigation

2019

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This study used two regional climate model experiments to assess the impact of paddy irrigation in the Sichuan Basin, China, on the near‐surface temperature across East Asia: a control experiment (CTL run), which was used to calculate soil moisture using an unmodified land surface scheme and a sensitivity experiment (SEN run) that incorporated an increase in soil moisture over the basin at the beginning of the rice‐growing season. Although the near‐surface temperature in the Sichuan Basin was higher in the CTL run than in the observations, it improved in the SEN run because of a change in the Bowen ratio associated with the increase in soil moisture. In the SEN run, the modification of local‐scale land surface wetness in the basin causes the decrease in the near‐surface temperature over northeastern China and its increase over southern China relative to that in the CTL run because of a change in the cloud convection associated with precipitation, which, in turn, modifies the solar and net radiation at the surface and the partitioning into the sensible and latent heat fluxes. The greenhouse effect associated with an increase in precipitable water in the SEN run also influences near‐surface warming over southeastern China and the ocean north of southwestern Japan, where the impacts of radiation processes and surface heat fluxes on the near‐surface temperature are small. Consequently, these results suggest that local‐scale modifications to land surface wetness in the Sichuan Basin result in changes in the spatial distribution of near‐surface temperatures over a part of East Asia.

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Section: 1029/2018jd029434mentioning

confidence: 99%

Modification of Near‐Surface Temperature Over East Asia Associated With Local‐Scale Paddy Irrigation

2019

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“…The mean length of HWs/WSs generated by this circulation type is 4.5 days, while the longest event reached 11 consecutive days (from 24 April to 4 May 2013). Both sub-types of radiative HWs/WSs are associated with very warm ridges which are imposing a soil moisture deficit prior to the onset of the beginning of the HW/WS event [77], which is known as a main contributor to the increase in TX during HWs [78].…”

Section: Synoptic Conditions Generating Radiative Hws/wssmentioning

confidence: 99%

Synoptic Conditions Generating Heat Waves and Warm Spells in Romania

et al. 2017

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Abstract:Heat waves and warm spells are extreme meteorological events that generate a significant number of casualties in temperate regions, as well as outside of temperate regions. For the purpose of this paper, heat waves and warm spells were identified based on daily maximum temperatures recorded at 27 weather stations located in Romania over a 55-year period . The intensity threshold was the 90th percentile, and the length of an event was of minimum three consecutive days. We analyzed 111 heat wave and warm spell events totaling 423 days. The classification of synoptic conditions was based on daily reanalysis at three geopotential levels and on the online version of a backward trajectories model. The main findings are that there are two major types of genetic conditions. These were identified as: (i) radiative heat waves and warm spells (type A) generated by warming the air mass due to high amounts of radiation which was found dominant in warm season; and (ii) advective heat waves and warm spells (type B) generated mainly by warm air mass advection which prevails in winter and transition seasons. These major types consist of two and three sub-types, respectively. The results could become a useful tool for weather forecasters in order to better predict the occurrence of heat waves and warm spells.

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“…There exist numerous studies focusing on modulation of extreme temperatures by the MJO during boreal winter (Jacques-Coper et al 2015b;Matsueda and Takaya 2015). During boreal summer (very weak MJO signals), however, little have hitherto been known about influences of different BSISO agents on temperatures, especially on extreme high temperatures Wang et al 2016). In particular, in the same context of intraseasonal oscillation, temperature extremes and precipitation extremes may occur concurrently in adjacent regions (Chen et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous modulations of precipitation and temperature extremes in Southern parts of China by the boreal summer intraseasonal oscillation

Chen

Zhai

2017

Clim Dyn

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Synoptic-scale characteristics and atmospheric controls of summer heat waves in China

Cited by 157 publications

References 86 publications

Modification of Near‐Surface Temperature Over East Asia Associated With Local‐Scale Paddy Irrigation

Modification of Near‐Surface Temperature Over East Asia Associated With Local‐Scale Paddy Irrigation

Synoptic Conditions Generating Heat Waves and Warm Spells in Romania

Simultaneous modulations of precipitation and temperature extremes in Southern parts of China by the boreal summer intraseasonal oscillation

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