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Spatiotemporal variation characteristics of drought disaster in China and correlations with direct economic losses
CHEN Yixiao, YUE Siyu, XIA Wenwen
Journal of Arid Meteorology, 2024 42 (4): 497
In recent decades, under the global warming, drought disasters have had a significant impact on society and economy in China, and the intensity and disastrousness of droughts have significant regional characteristics. It is very important to understand the spatial and temporal characteristics of drought disasters and their associated economic losses for future drought loss estimation, regional drought disaster risk management, and drought resource allocation. Therefore, based on meteorological drought composite indexes from 1961 to 2022 and drought disaster loss data from 2001 to 2022 in China (except Hong Kong, Macau and Taiwan), the spatial and temporal changes of drought disasters and the. . .
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Analysis of influence of drought risk on maize yield in Jilin Province
MU Jia, WU Di, LIU Yang, WANG Dongni, REN Jingquan
Journal of Arid Meteorology, 2024 42 (4): 506
Under climate warming, drought is still the most serious agro-meteorological disaster affecting maize production in Jilin Province. Accurately assessing drought risk and grasping the quantitative relationship between drought risk and yield could provide scientific reference for ensuring the safety of maize production. Based on the daily meteorological data, maize developmental stages and maize yield data from 1961 to 2020 in Jilin Province, the drought risk index of maize was constructed, its spatial distribution characteristics were analyzed. Moreover, the response relationship between relative meteorological yield and drought risk index was discussed. The result show that drought risk inde. . .
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Characteristics of regional high temperature and drought in China from April to June 2024 and their influence factors
YAN Pengcheng, LI Yiping, ZENG Dingwen, WANG Lijuan, ZHANG Jinyu, LU Xiaojuan, YUE Ping, JIN Jie
Journal of Arid Meteorology, 2024 42 (4): 518
Under the severe situation of global warming, regional high temperature and drought events are becoming more frequent, posing a major threat to ecological environment, food security, economic development and life and health. From April to June 2024, high-temperature and drought events occurred again in North China, Northwest China, and Southwest China, causing significant losses in agricultural production. This study utilized various data to preliminarily analyze the characteristics and causes of the high-temperature and drought processes in above three regions. The results show that the drought in southwest China mainly occurred in April, while the drought in North China and Northwest China. . .
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Analysis of climatic characteristics of meteorological drought in arid and semi-arid regions of China in recent 60 years
LI Chunhua, ZHU Biao, YANG Jinhu, HUANG Pengcheng
Journal of Arid Meteorology, 2024 42 (4): 526
In order to study the variation trend of climatic characteristics of consecutive dry days (CDDS) in arid and semi-arid regions of China the variation characteristics of CDDS and their differences in the period of 1961-1990 and 1991-2020 in the study area were analyzed by using the daily precipitation data from 74 meteorological stations in arid and semi-arid regions of China from 1961 to 2022. The CDDS equal to 16 days and above were focused on, and the CDDS of 16 to 25 days, 26 to 40 days, 41 to 60 days and above 60 days were defined as partial drought, moderate drought, severe drought and extreme drought, respectively. The results show that there are significant differences in the occurren. . .
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Spatial-temporal distribution characteristics and influencing factors of dry and wet in Guangdong Province based on CWSI
WANG Min, CHEN Xiaoyang, LIU Yanqun, LIANG Jian, HUANG Guanrong, LI Caoming, LI Xuan
Journal of Arid Meteorology, 2024 42 (4): 535
Analyzing the evolution of dry and wet in Guangdong Province is of great significance for strengthening water resource utilization and maintaining ecological environment stability. Based on evapotranspiration product of MODIS (Moderate Resolution Imaging Spectroradiometer) and meteorological observation stations data, choosing CWSI (Crop Water Stress Index) as the index of drought, Mann-Kendall (M-K) trend analysis and contribution methods were adopted to spatial-temporal distribution characteristics of CWSI as well as dominant meteorological factors. The results were indicated as follows: the annual CWSI indicated a downward trend through M-K trend test (-2.8×10-3 per year), season in year . . .
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Trends of extreme weather and climate events in China in recent 60 years and their characteristics in 2023
ZHANG Cunjie, ZHANG Siqi, NING Huifang
Journal of Arid Meteorology, 2024 42 (4): 552
In order to find out the change rules of extreme climatic events in China and its different regions, the extreme weather and climate events ( short for “extreme events”) such as extreme high temperature, extreme low temperature, extreme precipitation, extreme drought and extreme typhoon were analyzed by using the daily observation data of 2 254 meteorological observation stations in China (except Hong Kong, Macao and Taiwan) over the past 60 years and in 2023. The results show that since 1961, the overall trend of extreme events in China has been decreasing, and the trend of decreasing from 1970 to the early 1990s was obvious, and the trend of increasing since the late 1990s was obvious. The. . .
