Nowadays, the country's economic strength and science and technology has been greatly improved, promoting the growth of various industries. For the weather monitoring station, it not only realizes the automatic de...Nowadays, the country's economic strength and science and technology has been greatly improved, promoting the growth of various industries. For the weather monitoring station, it not only realizes the automatic detection, but also makes the weather monitoring station have a larger space for growth. At the same time, the staff of the weather monitoring station needs to focus on how to reduce the lightning strike rate and then make the correctness of the weather monitoring improve. In view of this, this paper mainly discusses the disadvantages of lightning protection in meteorological monitoring field and the corresponding treatment strategies for reference only.展开更多
Based on the needs of characteristic agricultural production for meteorological services in Huzhou City,we use C# programming language to develop the meteorological disaster monitoring and early warning platform for c...Based on the needs of characteristic agricultural production for meteorological services in Huzhou City,we use C# programming language to develop the meteorological disaster monitoring and early warning platform for characteristic agriculture in Huzhou City. This platform integrates the functions of meteorological and agricultural information monitoring,disaster identification and early warning,fine weather forecast product display,and data query and management,which effectively enhances the capacity of meteorological disaster monitoring and early warning for characteristic agriculture in Huzhou City,and provides strong technical support for the meteorological and agricultural departments in the agricultural meteorological services.展开更多
In this paper, the planting types of main crops in Hainan, meteorological characteristics, the impact of historical meteorological disasters on Hainan's agricultural production were briefly described, and then the...In this paper, the planting types of main crops in Hainan, meteorological characteristics, the impact of historical meteorological disasters on Hainan's agricultural production were briefly described, and then the necessity and importance of meteorological services for agriculture, the main measures to be taken and the establishment of defense system measures were put forward. Based on the analysis of the lack of agricultural meteorological services in Hainan province, this paper puts forward the necessity and trend of the development of agricultural meteorological services in Hainan province. It is necessary for Hainan province to establish a set of innovative defense system to reduce the impact of meteorological disasters on agricultural production.展开更多
Meteorological drought is a natural hazard that can occur under all climatic regimes. Monitoring the drought is a vital and important part of predicting and analyzing drought impacts. Because no single index can repre...Meteorological drought is a natural hazard that can occur under all climatic regimes. Monitoring the drought is a vital and important part of predicting and analyzing drought impacts. Because no single index can represent all facets of meteorological drought, we took a multi-index approach for drought monitoring in this study. We assessed the ability of eight precipitation-based drought indices（SPI（Standardized Precipitation Index）, PNI（Percent of Normal Index）, DI（Deciles index）, EDI（Effective drought index）, CZI（China-Z index）, MCZI（Modified CZI）, RAI（Rainfall Anomaly Index）, and ZSI（Z-score Index）） calculated from the station-observed precipitation data and the Ag MERRA gridded precipitation data to assess historical drought events during the period 1987–2010 for the Kashafrood Basin of Iran. We also presented the Degree of Dryness Index（DDI） for comparing the intensities of different drought categories in each year of the study period（1987–2010）. In general, the correlations among drought indices calculated from the Ag MERRA precipitation data were higher than those derived from the station-observed precipitation data. All indices indicated the most severe droughts for the study period occurred in 2001 and 2008. Regardless of data input source, SPI, PNI, and DI were highly inter-correlated（R^2=0.99）. Furthermore, the higher correlations（R^2=0.99） were also found between CZI and MCZI, and between ZSI and RAI. All indices were able to track drought intensity, but EDI and RAI showed higher DDI values compared with the other indices. Based on the strong correlation among drought indices derived from the Ag MERRA precipitation data and from the station-observed precipitation data, we suggest that the Ag MERRA precipitation data can be accepted to fill the gaps existed in the station-observed precipitation data in future studies in Iran. In addition, if tested by station-observed precipitation data, the Ag MERRA precipitation data may be used for the data-lacking areas.展开更多
There is an urgent need for the development of a method that can undertake rapid, effective, and accurate monitoring and identification of fog by satellite remote sensing, since heavy fog can cause enormous disasters ...There is an urgent need for the development of a method that can undertake rapid, effective, and accurate monitoring and identification of fog by satellite remote sensing, since heavy fog can cause enormous disasters to China’s national economy and people's lives and property in the urban and coastal areas. In this paper, the correlative relationship between the reflectivity of land surface and clouds in different time phases is found, based on the analysis of the radiative and satellite-based spectral characteristics of fog. Through calculation and analyses of the relative variability of the reflectivity in the images, the threshold to identify quasi-fog areas is generated automatically. Furthermore, using the technique of quick image run-length encoding, and in combination with such practical methods as analyzing texture and shape fractures, smoothness, and template characteristics, the automatic identification of fog and fog-cloud separation using meteorological satellite remote sensing images are studied, with good results in application.展开更多
Article title:Evaluating the accuracy of two satellite-based Quantitative Precipitation Estimation products and their application for meteorological drought monitoring over the Lake Victoria Basin,East Africa Authors:...Article title:Evaluating the accuracy of two satellite-based Quantitative Precipitation Estimation products and their application for meteorological drought monitoring over the Lake Victoria Basin,East Africa Authors:Priyanko Das,Zhenke Zhang&Hang Ren Journal:GEO-SPATIAL INFORMATION SCIENCE DOI:https://doi.org/10.1080/10095020.2022.2054731 When the above article was first published online,some of the Figure captions were incorrect.展开更多
To enhance the prevention capability of meteorological disasters in semi-arid mountainous areas,in view of the characteristics of strong suddenness,significant locality and high basin correlation of hazardous weather ...To enhance the prevention capability of meteorological disasters in semi-arid mountainous areas,in view of the characteristics of strong suddenness,significant locality and high basin correlation of hazardous weather in Liangcheng County,the progress of risk warning technology of hazardous weather and the innovative achievements of the construction of the basin joint prevention mechanism were systematically analyzed based on the recent prevention and mitigation practices of meteorological disasters in Liangcheng Meteorological Bureau.The results show that firstly,Liangcheng County has established an"ground-air-space"integrated monitoring network to achieve 5-min full coverage monitoring of core meteorological elements throughout the region.Secondly,relying on a multi-level forecasting system and intelligent technologies,the lead time of early warnings of hazardous weather has been extended to several hours,and the accuracy has significantly improved.Thirdly,a multi-channel and targeted warning dissemination system has been constructed,with a public coverage rate of over 90%.Fourthly,a basin joint prevention innovation model of"information sharing,joint discussion,and hierarchical linkage"has been formed,and the collaborative effectiveness of disaster response across regions and departments has been significantly enhanced.This research results can provide technical references and practical models for optimizing the prevention and mitigation system of meteorological disasters in regions with similar climate and geographical characteristics.展开更多
文摘Nowadays, the country's economic strength and science and technology has been greatly improved, promoting the growth of various industries. For the weather monitoring station, it not only realizes the automatic detection, but also makes the weather monitoring station have a larger space for growth. At the same time, the staff of the weather monitoring station needs to focus on how to reduce the lightning strike rate and then make the correctness of the weather monitoring improve. In view of this, this paper mainly discusses the disadvantages of lightning protection in meteorological monitoring field and the corresponding treatment strategies for reference only.
基金Supported by Huzhou Science and Technology Program(2013GY06)Research Project of Huzhou Municipal Meteorological Bureau(hzqx201602)
文摘Based on the needs of characteristic agricultural production for meteorological services in Huzhou City,we use C# programming language to develop the meteorological disaster monitoring and early warning platform for characteristic agriculture in Huzhou City. This platform integrates the functions of meteorological and agricultural information monitoring,disaster identification and early warning,fine weather forecast product display,and data query and management,which effectively enhances the capacity of meteorological disaster monitoring and early warning for characteristic agriculture in Huzhou City,and provides strong technical support for the meteorological and agricultural departments in the agricultural meteorological services.
文摘In this paper, the planting types of main crops in Hainan, meteorological characteristics, the impact of historical meteorological disasters on Hainan's agricultural production were briefly described, and then the necessity and importance of meteorological services for agriculture, the main measures to be taken and the establishment of defense system measures were put forward. Based on the analysis of the lack of agricultural meteorological services in Hainan province, this paper puts forward the necessity and trend of the development of agricultural meteorological services in Hainan province. It is necessary for Hainan province to establish a set of innovative defense system to reduce the impact of meteorological disasters on agricultural production.
文摘Meteorological drought is a natural hazard that can occur under all climatic regimes. Monitoring the drought is a vital and important part of predicting and analyzing drought impacts. Because no single index can represent all facets of meteorological drought, we took a multi-index approach for drought monitoring in this study. We assessed the ability of eight precipitation-based drought indices（SPI（Standardized Precipitation Index）, PNI（Percent of Normal Index）, DI（Deciles index）, EDI（Effective drought index）, CZI（China-Z index）, MCZI（Modified CZI）, RAI（Rainfall Anomaly Index）, and ZSI（Z-score Index）） calculated from the station-observed precipitation data and the Ag MERRA gridded precipitation data to assess historical drought events during the period 1987–2010 for the Kashafrood Basin of Iran. We also presented the Degree of Dryness Index（DDI） for comparing the intensities of different drought categories in each year of the study period（1987–2010）. In general, the correlations among drought indices calculated from the Ag MERRA precipitation data were higher than those derived from the station-observed precipitation data. All indices indicated the most severe droughts for the study period occurred in 2001 and 2008. Regardless of data input source, SPI, PNI, and DI were highly inter-correlated（R^2=0.99）. Furthermore, the higher correlations（R^2=0.99） were also found between CZI and MCZI, and between ZSI and RAI. All indices were able to track drought intensity, but EDI and RAI showed higher DDI values compared with the other indices. Based on the strong correlation among drought indices derived from the Ag MERRA precipitation data and from the station-observed precipitation data, we suggest that the Ag MERRA precipitation data can be accepted to fill the gaps existed in the station-observed precipitation data in future studies in Iran. In addition, if tested by station-observed precipitation data, the Ag MERRA precipitation data may be used for the data-lacking areas.
基金Key research project "Research of Shanghai City and Costal Heavy Fog Remote Sensing Detecting and Warning System" of Science and Technology Commission of Shanghai Municipality (075115011)
文摘There is an urgent need for the development of a method that can undertake rapid, effective, and accurate monitoring and identification of fog by satellite remote sensing, since heavy fog can cause enormous disasters to China’s national economy and people's lives and property in the urban and coastal areas. In this paper, the correlative relationship between the reflectivity of land surface and clouds in different time phases is found, based on the analysis of the radiative and satellite-based spectral characteristics of fog. Through calculation and analyses of the relative variability of the reflectivity in the images, the threshold to identify quasi-fog areas is generated automatically. Furthermore, using the technique of quick image run-length encoding, and in combination with such practical methods as analyzing texture and shape fractures, smoothness, and template characteristics, the automatic identification of fog and fog-cloud separation using meteorological satellite remote sensing images are studied, with good results in application.
文摘Article title:Evaluating the accuracy of two satellite-based Quantitative Precipitation Estimation products and their application for meteorological drought monitoring over the Lake Victoria Basin,East Africa Authors:Priyanko Das,Zhenke Zhang&Hang Ren Journal:GEO-SPATIAL INFORMATION SCIENCE DOI:https://doi.org/10.1080/10095020.2022.2054731 When the above article was first published online,some of the Figure captions were incorrect.
文摘To enhance the prevention capability of meteorological disasters in semi-arid mountainous areas,in view of the characteristics of strong suddenness,significant locality and high basin correlation of hazardous weather in Liangcheng County,the progress of risk warning technology of hazardous weather and the innovative achievements of the construction of the basin joint prevention mechanism were systematically analyzed based on the recent prevention and mitigation practices of meteorological disasters in Liangcheng Meteorological Bureau.The results show that firstly,Liangcheng County has established an"ground-air-space"integrated monitoring network to achieve 5-min full coverage monitoring of core meteorological elements throughout the region.Secondly,relying on a multi-level forecasting system and intelligent technologies,the lead time of early warnings of hazardous weather has been extended to several hours,and the accuracy has significantly improved.Thirdly,a multi-channel and targeted warning dissemination system has been constructed,with a public coverage rate of over 90%.Fourthly,a basin joint prevention innovation model of"information sharing,joint discussion,and hierarchical linkage"has been formed,and the collaborative effectiveness of disaster response across regions and departments has been significantly enhanced.This research results can provide technical references and practical models for optimizing the prevention and mitigation system of meteorological disasters in regions with similar climate and geographical characteristics.
