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427 results on '"Zheng, JingYun"'

9. Coupled Pacific Rim megadroughts contributed to the fall of the Ming Dynasty’s capital in 1644 CE

Author

Chen, Feng, primary, Wang, Tao, additional, Zhao, Xiaoen, additional, Esper, Jan, additional, Charpentier Ljungqvist, Fredrik, additional, Büntgen, Ulf, additional, Linderholm, Hans W., additional, Meko, David, additional, Xu, Hongna, additional, Yue, Weipeng, additional, Wang, Shijie, additional, Yuan, Yujiang, additional, Zheng, Jingyun, additional, Pan, Wei, additional, Roig, Fidel, additional, Hadad, Martín, additional, Hu, Mao, additional, Wei, Jiachang, additional, and Chen, Fahu, additional

Published
2024
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21. Major advances in studies of the physical geography and living environment of China during the past 70 years and future prospects

Author

Chen, Fahu, Fu, Bojie, Xia, Jun, Wu, Duo, Wu, Shaohong, Zhang, Yili, Sun, Hang, Liu, Yu, Fang, Xiaomin, Qin, Boqiang, Li, Xin, Zhang, Tingjun, Liu, Baoyuan, Dong, Zhibao, Hou, Shugui, Tian, Lide, Xu, Baiqing, Dong, Guanghui, Zheng, Jingyun, Yang, Wei, Wang, Xin, Li, Zaijun, Wang, Fei, Hu, Zhenbo, Wang, Jie, Liu, Jianbao, Chen, Jianhui, Huang, Wei, Hou, Juzhi, Cai, Qiufang, Long, Hao, Jiang, Ming, Hu, Yaxian, Feng, Xiaoming, Mo, Xingguo, Yang, Xiaoyan, Zhang, Dongju, Wang, Xiuhong, Yin, Yunhe, and Liu, Xiaochen

Published
2019
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29. Prediction of Clausius–Clapeyron Scaling of Daily Precipitation Extremes over China.

Author

Chen, Wenhui, Cui, Huijuan, and Zheng, Jingyun

Subjects
CLIMATIC zones, EXTREME environments, CLIMATE sensitivity, MOUNTAIN soils, FORECASTING, MODELS & modelmaking
Abstract

Observations and model simulations have confirmed that the higher percentiles of precipitation intensity of all wet days have increased with the local daily dewpoint temperature at the Clausius–Clapeyron (C-C) rate of 7% °C−1 using the binning technique over China. It is uncertain whether the binning scaling rates will remain constant in the future climate. Here, we use daily precipitation and dewpoint temperature (DPT) over China from 20 CMIP6 models to examine and project the change of binning scaling of precipitation extremes. The results of the study suggest that the multimodel ensemble median (MEM) generally captures the spatial distribution of binning scaling rates and binning curves in different climate zones across China. The binning scaling rates have stability in the future but with a large increasing trend (more than 30%) in southeast China in the far future (2061–2100) under the SSP5-8.5 scenario. CMIP6 models project that both the peak of extreme precipitation and the temperature for the plateau mountain zone will increase in the far future under the SSP5-8.5 scenario, implying that the peak structure does not provide an upper limit for future precipitation extremes. Significance Statement: The binning scaling rates describe the relationship between precipitation extremes and temperature based on their day-to-day variations. However, it is still unclear whether the binning scaling rates of daily precipitation extremes with daily temperature will change in the future. We use 20 CMIP6 models to project the scaling rates of precipitation extremes with dewpoint temperature over China in the future. The results show that the sensitivity of precipitation extremes to dewpoint temperature will generally be stable, except that southeast China shows an increasing trend of up to 30%. Moreover, the peak of extreme precipitation and the temperature will increase with warming in the plateau mountain zone. Our results have implications for precipitation prediction and risk assessment. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Reconstruction of ancient drought in Northwest China and societal responses: A case study of 1759

Author

Hao, Zhixin, Yang, Haonan, Jiang, Meirun, Xiong, Danyang, and Zheng, Jingyun

Abstract

According to the written records and scores of grain harvest in the official historical documents of the Qing Dynasty in China, the spatial-temporal distribution of and the impact caused by the 1759 AD drought in Northwest China were reconstructed, and the response of Chinese society to the drought at that time was summarized. In the spring and summer of 1759, vast areas of northern China suffered from drought, of which that experienced in the northwest region was the most serious. Starting from 27 April 1759, droughts covered Zhili, Shanxi, Shaanxi, and Gansu provinces, and the droughts in Gansu and northern Shaanxi provinces lasted until 23 July 1759. This severe drought caused the worst crop failure in Northwest China in 1759 during the period 1730–1900. By implementing a series of disaster relief measures, the Qing government managed to ease the adverse societal impact of the drought in the summer of 1760. Among the relief measures, tax reduction and exemption in disaster-stricken areas, grain storage in the northwest region, and bumper agricultural harvests in Henan, Shandong, Jiangsu, and Anhui provinces in 1759 were the main reasons for the rapid recovery from the drought impacts. With better climatic conditions in the 18th century, China had higher agricultural harvest levels in the 18th century than in the 19th century. Favorable financial conditions increased drought relief efforts, which was the background for the greater societal adaptability to the climate disaster of 1759.

Published
2023

38. Climate Change and Carbon Cycle

Author

Ge, Quansheng, Zheng, Jingyun, Liu, Haolong, Yu, Guirui, Fang, Huajun, Wang, R. L., Fang, Jingyun, Hu, Huifeng, Guo, Zhaodi, Shen, Haihua, Dong, Yunshe, Qi, Yuchun, Peng, Qin, Wang, Xiaoke, Zhao, Hong, Lu, Fei, Song, Changchun, Sun, Xiaomin, Wen, Xuefa, and Li, Wenhua, editor

Published
2015
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50. Chemical contaminants in canned food and can-packaged food: a review.

Author

Zheng, Jingyun, Tian, Lei, and Bayen, Stéphane

Subjects
*CANNED foods, *POLLUTANTS, *PACKAGED foods, *FOOD contamination, *PERISHABLE foods, *FOOD quality, *FOOD safety
Abstract

Canning, as a preservation technique, is widely used to extend the shelf life as well as to maintain the quality of perishable foods. During the canning process, most of the microorganisms are killed, reducing their impact on food quality and safety. However, the presence of a range of undesirable chemical contaminants has been reported in canned foods and in relation to the canning process. The present review provides an overview of these chemical contaminants, including metals, polymeric contaminants and biogenic amine contaminants. They have various origins, including migration from the can materials, formation during the canning process, or contamination during steps required prior to canning (e.g. the disinfection step). Some other can-packaged foods (e.g. beverages or milk powder), which are not canned foods by definition, were also discussed in this review, as they have been frequently studied simultaneously with canned foods in terms of contamination. The occurrence of these contaminants, the analytical techniques involved, and the factors influencing the presence of these contaminants in canned food and can-packaged food are summarized and discussed. [ABSTRACT FROM AUTHOR]

Published
2023
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