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Analysis of Changing Trend of Summer Precipitation in North China

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Meteorological and Environmental Research 2024年第4期15卷 15-20,23页

作者： Wei LIU Ulanqab Meteorological Bureau Ulanqab 012000China

Based on the reanalysis data of the National Center for Environmental Prediction(NCEP)and the precipitation dataset of the *** Prediction Center(CPC),the changing trend of summer precipitation in North China(35°-40°N,110°-125°E)during 1979-2020 was *** calculating the monthly climatic precipitation in North China,it is found that precipitation was mainly distributed from June to August,so the trend of precipitation in North China from June to August was mainly ***,the five-point moving average of regional mean precipitation in North China from June to August during 1979-2020 was *** is found that the fitting curve of the five-point sliding average was basically consistent with the changing trend of regional precipitation,and it showed a certain upward ***,the cumulative anomaly of regional average summer precipitation in North China showed a significant upward trend after 2005,which was similar to the moving average result,indicating that the precipitation in the later period increased compared with the earlier *** changing trend of summer precipitation in North China in the past 42 years was analyzed,and the results show that precipitation showed a significant increasing trend in most areas of North China,so that regional average precipitation also tended to increase *** comparing the precipitation in the past five years(2016-2020)and the last 36 years(1979-2015),it is found that the increase of summer precipitation in North China was more obvious,so the reasons for the increase in precipitation were further *** the occurrence of precipitation requires favorable thermal dynamic conditions,the one-dimensional linear regression of water vapor content at 850 hPa and meridional wind speed was conduced,and it is found that the two variables tended to increase obviously,which was consistent with the increasing trend of *** from both the results of regional average and the spatia

关键词： North China Summer precipitation Trend analysis

Spatial and Temporal Distribution Characteristics of Snowstorm in Ulanqab City in Recent 30 Years

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Meteorological and Environmental Research 2024年第4期15卷 11-14页

作者： Jie CHEN Jinhua LIU Ulanqab Meteorological Bureau Jining 012000China

Based on the data of daily snowfall and weather phenomena of 11 national meteorological stations in Ulanqab City from 1991 to 2020,the spatial and temporal distribution characteristics of snowstorm were *** results show that the snowstorm in Ulanqab had obvious seasonal distribution characteristics,mainly happening in spring(March-May)and autumn(September-November).It also had obvious regional distribution in space,and the snowstorm center appeared in Chahar Right Wing Middle Banner and Jining District,namely the east side of the Yinshan *** the past 30 years,the amount of snowstorm in the whole year in Ulanqab showed a certain fluctuation trend,and the number of snowstorm days had shown an obvious upward trend since 2011.

关键词： Ulanqab City Snowstorm Spatial and temporal distribution characteristics

Analysis of a Strong Sandstorm Process in Ulanqab City

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Meteorological and Environmental Research 2024年第1期15卷 8-11页

作者： Biyun LI Yu XUE Yanni SONG Ulanqab Meteorological Bureau Ulanqab 012000China

Based on NCEP reanalysis data,EDAS data and ground observation data,the causes of a strong sandstorm process in Ulanqab City from March 14 to 15,2021 were *** analysis shows that"3.15"sandstorm,a sandstorm process accompanied by northwest gale behind the front,was caused by strong cold air in the *** the early stage,the Mongolian cyclone resulted in the increase of temperature and decrease of pressure on the *** a strong surface cold high pressure at the rear of the cyclone invaded the city,a strong pressure gradient between high and low pressure provided dynamic conditions for the sandstorm *** transit of the surface cold front was the sign of the sandstorm outbreak,and the downward transmission of momentum at high altitudes increased the wind speed near the surface.

关键词： Cold front Gradient wind Downward transportation of momentum

Analysis of Characteristics of Snow Accumulation and Its Meteorological Influencing Factors during a Snowstorm Process in Ulanqab City

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Meteorological and Environmental Research 2024年第2期15卷 10-13,21页

作者： Nan ZHAO Xinyu CHEN Ulanqab Meteorological Bureau Ulanqab 012000China

Based on the data of national observation stations of CMISS system,artificial encrypted observation data of snow depth,ERA5 reanalysis data,the snowfall process in Ulanqab City from March 17 to 19,2022 was *** is found that the influencing system of the snowfall process was upper-air trough combined with ground inverted *** was not proportional to snow depth,and the relationship between the maximum snow depth and total snowfall varied in different value intervals.A large intensity of snowfall was a necessary condition for the formation of abundant accumulated snow when ground temperature was higher than 0℃.After the formation of accumulated snow,ground temperature changed less,and it was easy to produce accumulated snow as ground temperature was *** lower the temperature,the more conducive to the generation of accumulated snow.

关键词： Snowstorm Accumulated snow Snow-to-liquid ratio Influencing factors

Analysis of a Large-scale Hail Process in Ulanqab City

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Meteorological and Environmental Research 2024年第3期15卷 1-5,15页

作者： Yanni SONG Xuetong WU Zetao ZHANG Ulanqab Meteorological Bureau Ulanqab 012000China Fengzhen Meteorological Bureau Fengzhen 012100China

Based on the weather monitoring data,NCEP/NCAR reanalysis data and Doppler weather radar data,the circulation background,atmospheric stability and changing characteristics of radar echoes of a large-scale hail weather process in Ulanqab City on July 5,2021 were *** results show that this hail weather process occurred in the summer afternoon of the hail-prone period in Ulanqab City,and was formed under the influence of upper trough and the circulation background of"two troughs and one ridge",which was conducive to the occurrence of strong convection *** low-level shear line provided the dynamic and water vapor conditions for the occurrence of the *** strong convection weather,water vapor was transported mainly from the Bay of Bengal,India and Nepal over the *** the occurrence of strong convection weather,water vapor transport increased significantly,and the low-level water vapor concentrated below 400 hPa,with obvious convergence and vertical *** characteristic parameters of radar echoes,such as combined reflectivity,vertically integrated liquid,and echo top height,increased significantly before and during the occurrence of hail,which had good indicative significance for the prediction and early warning of hail.

关键词： Hail Upper trough Shear line Convection cell

Harm of Hail to Crops and Countermeasures of Artificial Hail Suppression in Ulanqab City

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Meteorological and Environmental Research 2024年第2期15卷 62-63,70页

作者： Pei WANG Tengge'er WU Jinhua LIU Ulanqab Meteorological Bureau Ulanqab 012000China Huade Meteorological Bureau Huade 013350China

Hail is one of meteorological disasters affecting crop growth in Ulanqab *** happens frequently from May to September,and this period is also the main growing season of *** this period,hail will cause damage to crops,make farmland soil harden,and bring varying degrees of harm to agricultural *** hail suppression is an important scientific and technological means for disaster prevention and *** is necessary to strengthen the monitoring,analysis and forecast of severe convection weather,intensify the release of early warning information of hail weather,provide accurate and reliable real-time information for the implementation of artificial hail suppression operations,strengthen the implementation of artificial weather modification,effectively carry out artificial hail suppression operations,and avoid and reduce the impact of hail disaster.

关键词： Hail Crops Harm Artificial hail suppression Ulanqab City

Analysis of a Rare Heavy Rain Weather Process in Autumn in Ulanqab City

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Meteorological and Environmental Research 2024年第2期15卷 1-3,9页

作者： Xinyu CHEN Nan ZHAO Wenying YU Chao FAN Ulanqab Meteorological Bureau Ulanqab 012000China Huade Meteorological Bureau Huade 013350China

Based on the conventional observation data and NCEP/NCAR reanalysis data,the circulation situation,influencing systems and causes of the heavy rain during September 20-21,2010 in Ulanqab City were analyzed from the evolution process of weather circulation situation and the changes of various physical quantity *** results show that there was an obvious frontal zone between 45-52°N,which brought strong cold *** transport of warm and humid air outside the subtropical high and typhoon was the main water vapor source of the strong precipitation,and the southwest jet at 700 hPa transported abundant water *** was a broad inverted trough to the south of 45°N,with a central value of 1000.0 *** City was on the top of the inverted trough,stable and less moved,which was conducive to the occurrence of systematic heavy *** rainstorm was a strong precipitation process caused by the intersection of cold air brought by the southward movement of the upper frontal zone and warm and humid air outside the subtropical *** the precipitation,the invasion of strong cold air brought frost and cold wave weather to Ulanqab City.

关键词： Frontal zone Subtropical high Inverted trough Frost Ulanqab City

Empowerment of Precise Ideological and Political Education in Higher Education with Educational Digitalization

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Journal of Contemporary Educational Research 2024年第4期8卷 23-28页

作者： Yan Dong Yu Yu Ge Yao Ulanqab Key Laboratory of Intelligent Information Processing and Security Jining Normal UniversityUlanqab 012000China

The study explores how educational digitalization enables the precise development of ideological and political education in colleges and *** transformation enables colleges and universities to accurately define educational objectives,content strategies,effect evaluation,and process management,and realize the precision and intelligence of ideological and political *** application of big data technology enhances the data-oriented thinking of teachers and students,promotes the accurate application of data,and improves the efficiency of ideological and political educa*** research also prospected a new vision of the digital construction of ideological and political courses and clarified the theoretical and practical path of the implementation and evaluation mode of ideological and political courses under digital *** digitalization enables precise ideological and political education,which is a key way to promote the innovative development of ideological and political education in colleges and universities and will strongly support the improvement of the overall quality of higher education and the training of excellent talents.

关键词： Education digital empowerment Precise ideological and political education Improvement of efficiency

内蒙古平原灌区土壤固碳与养分吸附特征及秸秆还田调控

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华北农学报 2024年第1期39卷 120-126页

作者：于博刘雅梦杨哲王佳乐王钰艳郭艳马扬任琴穆俊祥集宁师范学院生命科学与技术学院内蒙古集宁012000 乌兰察布市生物学经济作物抗逆重点实验室内蒙古集宁012000 集宁师范学院内蒙古集宁012000 集宁区农牧水利事业发展中心内蒙古集宁012000

为内蒙古平原灌区春玉米连续高产稳产过程中秸秆培肥高产田和改良盐碱田提供理论依据。设置了玉米秸秆还田1~4 a(HT1~HT4)定位试验,以秸秆不还田作为对照(CK),测定了春播前和收获期土壤有机碳含量、全氮含量、有效氮含量、有效磷含量、... 详细信息

为内蒙古平原灌区春玉米连续高产稳产过程中秸秆培肥高产田和改良盐碱田提供理论依据。设置了玉米秸秆还田1~4 a(HT1~HT4)定位试验,以秸秆不还田作为对照(CK),测定了春播前和收获期土壤有机碳含量、全氮含量、有效氮含量、有效磷含量、阳离子交换量、pH值和酸碱缓冲曲线。结果表明,HT1~HT4收获期与春播前相比土壤有机碳含量、全氮含量、有效氮含量、有效磷含量、阳离子交换量的相对变化率为1.34%~3.62%,0.20%~1.51%,-0.11%~0.78%,0.89%~6.36%,0.09%~0.41%,CK收获期与春播前相比土壤有机碳含量、全氮含量、有效氮含量、有效磷含量、阳离子交换量的相对变化率为1.57%,-0.02%,-0.45%,-0.15%,-0.05%;HT2、HT3、HT4比CK的土壤pH值显著降低;土壤对碱的缓冲能力依次为HT4>HT3>HT2>HT1>CK。综上所述,随秸秆还田年限的增加,土壤固碳能力、保肥能力和缓冲性能增大,有效抵御因施化肥等因素导致土壤pH值剧烈变化的能力增强,秸秆还田培肥改土措施显著提升了土壤质量。

关键词：秸秆还田土壤有机碳土壤养分吸附土壤阳离子交换量土壤酸碱缓冲曲线盐碱田