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New progresses in the study of land-atmosphere interaction in summer monsoon transition zone in China
ZHANG Liang, ZHANG Qiang, WANG Runyuan, YUE Ping, WANG Sheng, ZENG Jian, YANG Zesu, LI Hongyu, QIAO Liang, WANG Wenyu, ZHANG Hongli, YANG Siqi, ZHAO Funian
Journal of Arid Meteorology, 2023 41 (4): 530
The summer monsoon transition zone in China is one of the regions with strong land-atmosphere interaction in the world, and it is also an area where extreme weather disasters are frequent and easy to cause serious economic losses. Further understanding of land-atmosphere interaction in the transition area will help to improve the disaster prevention and mitigation ability of this region. Based on the research results of the summer monsoon transition area related projects carried out by the Key Laboratory of Drought Climate Change and Disaster Reduction of China Meteorological Administration in recent years, this paper systematically summarizes the new progresses of land-atmosphere interactio. . .
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Meteorological drought and atmospheric circulation anomalies characteristics in Heilongjiang Province from May to September in recent 50 years
WANG Ying, ZHANG Shu, XU Yongqing, QUE Linjing, LI Xinhua, HUANG Yingwei, CHEN Xue, WANG Lei
Journal of Arid Meteorology, 2023 41 (4): 549
Heilongjiang Province is the major grain production base in China, the study of drought climate characteristics in Heilongjiang Province is of great importance for scientific prevention and management of drought disasters. Based on daily temperature and precipitation data from 80 national meteorological stations in Heilongjiang Province from May to September during 1971-2020, the daily meteorological drought composite index (MCI) of Heilongjiang Province was calculated, and the spatial and temporal distribution characteristics of drought, severe drought and extreme drought days in Heilongjiang Province were analyzed. At the same time, the circulation characteristics of typical dry and wet ye. . .
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Spatio-temporal evolution characteristics of drought in the “Heng-Shao-Lou drought corridor”
YANG Yang, ZHAO Weiming, HU Yingbing, SHENG Dong, WEI Yongqiang, SHEN Zhigao, TAN Jun
Journal of Arid Meteorology, 2023 41 (4): 559
Recently, the droughts attack frequently in the Yangtze River basin, resulting in more and more loss. To further improve regional drought risk management and drought resistance capabilities, it is of great significance to conduct research on the spatio-temporal evolution characteristics of drought in typical drought-prone areas. “Heng-Shao-Lou drought corridor” in Hunan Province is a region with most severe droughts, the standardized precipitation index (SPI) dataset based on monthly precipitation data from 33 meteorological stations in this area from 1971 to 2022 is constructed. Citing the case of Shaoyang County, run theory is applied to integrate drought events, and Gumbel-Copula is adopt. . .
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Desertification monitoring in the Qaidam Basin based on NDVI-Albedo feature space
SUN Shujiao, CAO Xiaoyun, XIAO Jianshe, SUN Weijie, ZHU Cunxiong
Journal of Arid Meteorology, 2023 41 (4): 569
Desertification has become a major threat to the global ecological environment, and the desertification monitoring is crucial for desertification prevention and control. Based on the Suomi/NPP (National Polar-orbiting Partnership) remote sensing data and the observation data of 8 meteorological stations during the vegetation growing season (from May to September) from 2014 to 2021 in the Qaidam Basin, the desertification difference index (DDI) was calculated by using NDVI-Albedo (Normalized Difference Vegetation Index-Albedo) feature space. Moreover, the natural discontinuity method, Sen+M-K trend analysis method, correlation analysis method, accuracy error matrix and transfer matrix analysi. . .
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Spatio-temporal distribution characteristics of summer hourly heavy rainfall in the Three Gorges Reservoir area from 1992 to 2021
TANG Yonglan, XU Guirong, WANG Xiaofang, XIAO Yanjiao, QI Haixia, LENG Liang
Journal of Arid Meteorology, 2023 41 (4): 598
The Three Gorges Reservoir area (TGRA), which is located in the hinterland of the Yangtze River Basin, is a typical area with frequent meteorological disasters and fragile ecological environment, especially the hourly heavy rainfall (HHR) in summer is prone to disasters due to suddenness and difficulty in prediction. Based on the hourly precipitation data in summer during 1992-2021 from the National Meteorological Information Center of China Meteorological Administration, the fine spatio-temporal distribution characteristics of HHR and heavy rainfall event (HRE) in the TGRA are investigated. The results show that the summer HHR in the TGRA has strong local features, its intensity is strong, . . .
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Pollution characteristics of two strong dust processes in northern China in March 2021
TU Aiqin, WANG Zhenzhu, ZHU Genghua, WANG Zhifei, ZHANG Hai, ZHANG Shuai, LIU Dong, WENG Ningquan
Journal of Arid Meteorology, 2023 41 (4): 619
In order to study the development law and pollution characteristics of dust weathers, two strong sandstorm processes occurring in northern China in March 2021 (the processes on March 15 and 27, referred to as “3·15” process and “3·27” process, respectively) are analyzed based on polarized mie-scattering lidar observation data and hourly urban particulate mass concentration data in Shijiazhuang and Jinan. The results are as follows: (1) When the dust arrived, the mass concentration of PM10 in the two cities increased rapidly, and the mass concentration ratio of PM2.5 and PM10 decreased rapidly. (2) The PM10 mass concentration of the two cities conformed to the normal distribution during the t. . .
