Non‐stationary climate changes in summer high‐temperature extremes in Shanghai since the late 19th century

2020 ◽  
Author(s):  
Kai Tu ◽  
Zhongwei Yan
Keyword(s):  
High Temperature ◽  
19Th Century ◽  
Climate Changes ◽  
Temperature Extremes ◽  
Late 19Th Century ◽  
High Temperature Extremes

High-Temperature Enantiomeric Azobenzene-Based Photoisomerized Piezoelectrics: 4-(Phenyldiazenyl)anilinium) D- and L-Tartrate

2021 ◽  
Author(s):  
Xin Mu ◽  
Lei Xu ◽  
Yiyi Xu ◽  
Han-Yue Zhang ◽  
Ren-Gen Xiong
Keyword(s):  
High Temperature ◽  
19Th Century ◽  
Rochelle Salt ◽  
Late 19Th Century

Rochelle Salt, as the initiator of piezoelectrics and ferroelectrics, has built a bridge between homochirality as well as piezoelectricity and ferroelectricity since the late 19th century. One can greatly increase...

Future high-temperature extremes and stationarity

2018 ◽  
Vol 98 (3) ◽  
pp. 1115-1134 ◽  
Author(s):  
S. Parey ◽  
T. T. H. Hoang ◽  
D. Dacunha-Castelle
Keyword(s):  
High Temperature ◽  
Temperature Extremes ◽  
High Temperature Extremes

scholarly journals Summer High Temperature Extremes over China Linked to the Pacific Meridional Mode

2020 ◽  
Vol 33 (14) ◽  
pp. 5905-5917
Author(s):  
Ming Luo ◽  
Ngar-Cheung Lau ◽  
Wei Zhang ◽  
Qiang Zhang ◽  
Zhen Liu
Keyword(s):  
High Temperature ◽  
Land Surface ◽  
Southern China ◽  
Eastern China ◽  
Northern China ◽  
Temperature Extremes ◽  
The Pacific ◽  
Meridional Mode ◽  
High Temperature Extremes ◽  
Pacific Meridional Mode

AbstractThis study investigates the association between summer high temperature extremes (HTEs) over China and the Pacific meridional mode (PMM) that is characterized by an anomalous north–south sea surface temperature gradient and an anomalous surface circulation over the northeastern subtropical Pacific. It is found that the HTE activities over most parts of southern China (particularly eastern China) are prominently intensified during the positive PMM phase and weakened during the negative phase. Further examinations suggest that the PMM is linked with HTEs in China through processes that entail both eastward and westward development of signals emanating from the PMM site. The westward development is associated with the formation of an anomalous low-level cyclone over the western North Pacific (WNP), which may be viewed as a Matsuno–Gill-type response to the off-equatorial heating in the eastern Pacific. This circulation change is accompanied by anomalous ascent over WNP and northern China, and subsidence over eastern China. On the other hand, the eastward development process is linked to the PMM-induced displacement of the East Asian jet stream and the generation of a midlatitude Rossby wave train. In the positive PMM phase, the above circulation changes are accompanied by anomalous air subsidence and enhanced adiabatic heating, reduced precipitation, anomalous lower-level anticyclone, and rising surface pressure over the eastern part of China. Moreover, the land surface of that region receives more solar radiation. Opposite changes are discernible over northern China. These changes are favorable for the occurrence and persistence of HTEs over eastern China and tend to suppress HTEs over northern China.

scholarly journals Climate Characteristics of High-Temperature and Muggy Days in the Beijing-Tianjin-Hebei Region in the Recent 30 Years

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Guohua Zhang ◽  
Jian Guan ◽  
Jingyi Ai ◽  
Jiangtao Zhang ◽  
Xiaoqing Jin
Keyword(s):  
High Temperature ◽  
Precipitation Amount ◽  
The Other ◽  
Annual Precipitation ◽  
Temperature Extremes ◽  
The Past ◽  
Annual Precipitation Amount ◽  
High Temperature Extremes

The climate characteristics of high-temperature (37°C and above) and muggy days in the Beijing-Tianjin-Hebei region over the past 30 years from 1981 to 2010 are analyzed. The results are summarized as follows. During this period, the years with the most number of high-temperature days are 1997–2005 and 2009 in the Beijing-Tianjin-Hebei region, while high-temperature extremes appear in 1999, 2000, 2002, 2009, and 2010. This disparity between the years with high-temperature extremes and the years with the most number of high-temperature days is located primarily in the central and southern cities of the Beijing-Tianjin-Hebei region. High-temperature extremes in the southern cities appear in June and July, while high-temperature extremes in the other cities appear in July. The years with the most number of muggy days are 1994, 1997, 1998, 2000, and 2010 in the Beijing-Tianjin-Hebei region, but the years with the extreme muggy conditions appear in 1981, 2002, 2005, and 2010. The most number of muggy days are in July, and the muggy days in July and August account for about 90% of the entire summer. Over the 30-year period, no apparent changes are observed in the number of days with precipitation and the annual precipitation amount.

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