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Saltwater intrusion-drought compound event risk in the Pearl River Estuary and its response to climate change
DUAN Hailai, LIU Chang, XIE Lijiang
Journal of Arid Meteorology, 2025 43 (6): 855
Investigating the response routine of saltwater intrusion-drought compound risk to climate change provides a scientific basis for safeguarding regional water supply security. This study focuses on the Modaomen waterway in the Pearl River Estuary. Utilizing daily drought data from the Guangdong section of the Xijiang River Basin and salinity monitoring data from the Guangchang Pumping Station in the Modaomen Estuary, this study applies a compound risk assessment model to calculate, evaluate, and project the saltwater intrusion-drought compound risk index for Modaomen. The results show that the chloride concentration in the Modamen waterway of the Pearl Rver Estuary has a significant nonlinear. . .
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Spatio-temporal variations and formation mechanisms of rainstorm floods and secondary disasters in Shaanxi Province
BAI Aijuan, BAI Mingxin, CHENG Zhigang, ZHU Deqiang, BAI Jinfeng
Journal of Arid Meteorology, 2025 43 (6): 909
Shaanxi Province is located in the northeast of the Tibetan Plateau, which is dominated by complex terrain of the Qinba Mountains, river valley and the Loess Plateau. Rainstorms are frequent and intense in Shaanxi, and often lead to floods and secondary disasters. Based on data of direct disaster reports from 2008 to 2023, this paper analyzes the spatial and temporal distribution of rainstorm floods and secondary disasters. Taking the disasters in the Qinba Mountains area as an example, this paper explores the triggering mechanism of heavy precipitation on extreme floods and secondary disasters. The results are as follows: (1) The frequency of rainstorm and flood disasters and their secondar. . .
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Comparison of two severe sand-dust weather processes over the Hexi Corridor in spring 2023
HE Min, WANG Jinlong, HUANG Yuxia, GOU Shang, ZHANG Kexin, WANG Caifan, WEI Yapeng, ZHANG Yanrong, ZHANG Yijie, AN Junbao
Journal of Arid Meteorology, 2025 43 (6): 866
To gain an in-depth understanding of the circulation characteristics, formation mechanisms, and transport features of strong wind-dust weather processes, this paper employs conventional meteorological observation data and ERA5 reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF). Combined with simulations from the HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) model, as well as observational data from aerosol lidar, and wind profiler radar observations, a comparative analysis is conducted on two severe dust events that occurred in the Hexi Corridor during the spring of 2023 (the 20 March event and the 18 April event). The results are as follo. . .
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Refined characteristics and cause analysis of the “23·7” extraordinary heavy rainfall in Beijing-Tianjin-Hebei region
JI Xueshuai, KANG Bosi, HOU Xiaoqi, GUO Xuhui, SHI Wenbo, HUANG Shanjiang
Journal of Arid Meteorology, 2025 43 (6): 890
To investigate the formation mechanisms of heavy precipitation during landfalling typhoons, explore the application of high-resolution data in persistent heavy rainfalls, and analyze the synergistic effects of dynamic and thermodynamic factors, the observational characteristics and thermodynamic causes of the torrential rainstorm process that occurred in the Beijing-Tianjin-Hebei region from 29 July to 1 August 2023, were analyzed using ground meteorological station precipitation data, reanalysis data from the European Centre for Medium-Range Weather Forecasts, raindrop spectrum data, and dual-polarization radar data. The results are as follows: 1) The high-pressure dam formed by the subtrop. . .
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Sensitivity of land surface schemes to snow cover in the WRF model
ZHOU Yanyan, WANG Ying, WEI Ruirui, ZHAO Tianyi
Journal of Arid Meteorology, 2025 43 (6): 966
The complex influence of snow cover on surface energy processes constitutes a critical source of uncertainty in wintertime numerical simulations over complex terrain and therefore warrants further investigation. Comparative simulation experiments were conducted for a snow-covered period (18-26 February) and a snow-free period (11-19 January) in 2014 over the Lanzhou New Area using the Weather Research and Forecasting (WRF) model version 4.3. Four land surface models (LSMs), SLAB, Pleim-Xiu, RUC, and NoahMP were systematically evaluated against observations from four meteorological towers to reveal the impact of snow cover on simulation accuracy and scheme sensitivity. Satisfactory performanc. . .
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Meridional contrast analysis of surface meteorological variables in the Taklamakan Desert over the past 30 years
ZHANG Guanfeng, LIAO Qimei, HE Qing, ZHANG Zulian, ZHANG Hailiang, MENG Lu, GU Junming, GONG Qing, ZHENG Wei
Journal of Arid Meteorology, 2025 43 (6): 845
To reveal the response characteristics of different underlying surfaces to climate change in the Taklamakan Desert, this paper adopts linear trend analysis, the Mann-Kendall test, and correlation analysis to comparatively investigate the meridional variation characteristics of surface meteorological elements in this region over the past 30 years, based on the meteorological observation data from three stations located in the northern margin (Luntai), hinterland (Tazhong), and southern margin (Minfeng) of the desert during 1997-2024. The results are as follows: (1) Significant regional differences exist in the interannual variations of all meteorological elements. Temperatures in Luntai and T. . .
