Analysis on Precipitation Variation in Anyang and Nanyang in Recent 57 Years

[Objective] The aim was to analyze precipitation variation in Anyang and Nanyang in recent 57 years. [Method] Based on the data of annual precipitation in Anyang and Nanyang from 1953 to 2009, the changes of precipitation in Anyang and Nanyang were compared by means of mathematical statistics, regression analysis and wavelet analysis. [Result] In recent 57 years, annual precipitation in Anyang and Nanyang showed decrease trend, especially Anyang with obvious decrease trend; from seasonal variation, average precipitation in spring and winter went up in Anyang and went down in Nanyang, while average precipitation in summer and autumn reduced in two cities; from periodic variation, when the time scale of precipitation in Anyang was 12-15 years, there was a catastrophe point in 1970, and Nanyang had two catastrophe points in 1965 and 1997 when the time scale of precipitation was 15 years and 4 catastrophe points in 1968, 1978, 1987 and 1999 when time scale was 7-10 years. [Conclusion] The study could provide theoretical foundation for the forecast of local climate changes.

Analysis of Precipitation Resource and Weather Modification Potential in Anyang

Using ground water vapor pressure and precipitation data at four times of one day during 1985- 2014 in each county( city) of Anyang,precipitable water at each station was calculated,and temporal-spatial distribution of atmospheric maximum precipitable water and its change trend over the years in the city were analyzed. Results showed that atmospheric maximum precipitable water in Anyang City had the characteristics of summer far more than winter,autumn slightly higher than spring,west and south more,and east and north less,and presented the increasing trend year by year. We further analyzed the characteristic of monthly rainfall enhancement potential in each county,and mean in whole year was 80%. In spring and winter,rainfall enhancement potential in the west was bigger than east,while rainfall enhancement potential in the east was bigger than west in summer and autumn. The research provides reference basis for rationally carrying out artificial rainfall work,which could effectively ease uneven temporal-spatial distribution problem of water resource in Anyang City.

Exploration on Cause of a Lightning Strike Process in Anyang in August of 2013

Taking a lightning accident of one unit as clue,weather characteristics and radar echo of lightning disaster occurrence were firstly checked, cause of lightning strike was analyzed,and focus and method of lightning protection in the units were summarized,which was beneficial to reducing loss and risk caused by lightning.

Primary Report on Influences of the Meteorological Factors on High-quality Summer Millet Production in North Henan Province

[Objective]The research aimed to study influences of meteorological factors on high-quality summer millet production in north Henan Province.[Method]By using summer millet yield and corresponding meteorological data in Anyang of Henan,influence of rainfall on yield of new high-quality summer millet variety during 2003-2012 was analyzed.[Result]Rainfall during May-July had the maximum influence on summer millet yield.Correlation regression equation was Y=0.738 8X+159.991(R=0.982 04),reaching extremely significant level.[Conclusion]The research could provide scientific basis for sufficiently using local meteorological condition,breeding high-quality summer millet variety and its high yield.

Analysis of the Relationship between Vertical Distribution of Four Automatic Stations and Local Precipitation in Taihang Mountain of Linzhou

[Objective]The research aimed to analyze the relationship between vertical distribution of four automatic stations and local precipitation in Taihang Mountain of Linzhou.[Method]Using mesoscale detection and statistical data of the automatic stations in Henan,the geographical distribution of the precipitation affected by underlying surface in mountainous area of Linzhou was analyzed.[Result]Surface mesoscale wind field convergence line formed by thermal action of inhomogeneous underlying surface and mountainous terrain and upward movement played the strengthening role to the low-level jet.They affected formation and development of strong convective weather.The geographic distribution of precipitation in mountainous area was highly affected by the terrain,and rainfall,precipitation days and intensity in mountainous area were significantly greater than that in the surrounding hills region.In particular,rainfall on the windward slope significantly increased,and rainfall increased as mountain height within a certain height.[Conclusion]Hourly ground data analysis at automatic stations had very good forecast indication role in formation,development and dissipation of heavy rain in mountainous areas.

The Relationships between Respiratory Disease, Cardio-cerebral Vascular Disease and Temperature Change

Respiratory disease and cardio-cerebral vascular disease frequently occur in Anyang City. In this paper,by comparing incidence numbers of respiratory disease and cardio-cerebral vascular disease in Anyang People's Hospital during 2010- 2012 with seasonal change of local temperature,it is found that they have obvious relationship,which has very important significance for preventing respiratory disease and cardio-cerebral vascular disease in the future.

Analysis on Relationship between Overcast and Rainy Weather, Drought, Flood and Wheat Yield

[Objective] The research aimed to study influence of meteorological factor in late growth stage of wheat. [Method] Based on precipitation, sunshine and yield per unit of wheat in Anyang City in May of 1979-2008, the positive and negative influences of meteorological condition in late growth stage of wheat (May) on wheat yield in Anyang City were analyzed by using agricultural climatic statistical method. Moreover, the reason and defense measure of green-dry hazard in late growth stage of wheat in the city were studied. [Result] When the sunshine percentage in May > 55%, and rainfall < 45 mm, the wheat yield generally increased. But when it was overcast and rainy, and the sunshine was less, especially monthly rainfall > 80 mm, and monthly sunshine percentage < 55%, the wheat yield generally reduced. The overcast and rainy weather, flood in late growth stage of wheat were easy to cause green-dry yield reduction. The rainless weather even drought weren't obviously unfavorable for good harvest of wheat. In May, when precipitation was too more, or duration was too long, and the air humidity was too big, the normal water supply and inorganic nutrient transmission were affected. Meanwhile, when the overcast and rainy weather was longer, the sunshine was shorter, and the sunshine intensity weakened in late stage, it wasn't favorable for accumulation of photosynthetic product, and the normal implementing of grouting process was affected. The measures should be used to prevent and control green-dry yield reduction of wheat, such as discharging water and preventing flood, breeding good seed, scientific planting and reasonable irrigation. [Conclusion] The research provided scientific basis for studying variety improvement, scientific plantation, reasonable irrigation, good quality and high yield of wheat.