Volume 31,Issue 2,2003 Table of Contents
2003, 31(2):67.
Abstract:
For the last 30 years, the multi statistical analysis method has been greatly advanced.The present study focuses on some application and development of statistical forecast of meteorology. The materials are chosen mainly from multi statistical analysis and analysis of time series. The fuzzy set method?artifical intelligence (artifical neural networks, etc.)? grey system and Chebysher polyhomial expansion that are not statistical are included in the statistical method. In addition Kalman filter?fractal dimension etc. that are widely used in the domain of the meteorology in recent year is refered to in this paper.
For the last 30 years, the multi statistical analysis method has been greatly advanced.The present study focuses on some application and development of statistical forecast of meteorology. The materials are chosen mainly from multi statistical analysis and analysis of time series. The fuzzy set method?artifical intelligence (artifical neural networks, etc.)? grey system and Chebysher polyhomial expansion that are not statistical are included in the statistical method. In addition Kalman filter?fractal dimension etc. that are widely used in the domain of the meteorology in recent year is refered to in this paper.
2003, 31(2):80.
Abstract:
根據常規氣象觀測資料、GMS-5靜止氣象衛星的紅外云圖和可見光圖像，分析了1999年4月25至5月4日塔里木盆地浮塵天氣。分析結果表明，紅外云圖和可見光圖像能夠監測盆地浮塵的變化，浮塵呈灰色，紋理均勻，邊界清晰。浮塵區的TBB在0～-15℃之間變化，與地面能見度有著較好的對應關系，大范圍浮塵區的反射率在30％～36％之間，浮塵區反射率等值線稀疏，云區反射率等值線密集。
根據常規氣象觀測資料、GMS-5靜止氣象衛星的紅外云圖和可見光圖像，分析了1999年4月25至5月4日塔里木盆地浮塵天氣。分析結果表明，紅外云圖和可見光圖像能夠監測盆地浮塵的變化，浮塵呈灰色，紋理均勻，邊界清晰。浮塵區的TBB在0～-15℃之間變化，與地面能見度有著較好的對應關系，大范圍浮塵區的反射率在30％～36％之間，浮塵區反射率等值線稀疏，云區反射率等值線密集。
2003, 31(2):84-87.
Abstract:
Based on the 1961-2000 observational data of 11 weather stations in Chaidamu Basin ,the time-space distribution characteristics of sandstorm weather in Chaidamu Basin are analyzed. Considering the high circulation situation,ground cold air,affect-factors and the forecast index of forty sandstorm events during 1980-2000 Spring ,the forcasting method of Spring sandstorm weather is established.
Based on the 1961-2000 observational data of 11 weather stations in Chaidamu Basin ,the time-space distribution characteristics of sandstorm weather in Chaidamu Basin are analyzed. Considering the high circulation situation,ground cold air,affect-factors and the forecast index of forty sandstorm events during 1980-2000 Spring ,the forcasting method of Spring sandstorm weather is established.
2003, 31(2):88-93.
Abstract:
HRI high resolution digital data format of Meteosat satellite which has been received in Beijing 1998 is described.
HRI high resolution digital data format of Meteosat satellite which has been received in Beijing 1998 is described.
2003, 31(2):94-96.
Abstract:
The relationship between the coronary heart disease and meteorological condition is analyzed. The result shows that the occurrence of the coronary heart disease is related to temperature, air pressure and other meteorological elements. Based on the correlation analysis, the prediction equation for the weekly incidence of coronary heart disease is set up using the step regression, which provides some references for preventing and treating the disease.
The relationship between the coronary heart disease and meteorological condition is analyzed. The result shows that the occurrence of the coronary heart disease is related to temperature, air pressure and other meteorological elements. Based on the correlation analysis, the prediction equation for the weekly incidence of coronary heart disease is set up using the step regression, which provides some references for preventing and treating the disease.
2003, 31(2):97-100.
Abstract:
A squall weather process over the northern Zhejiang Province is analyzed. The results show that the squall took place under the condition of upper forward trough and in the instability area near the sub tropical high. The warm and moist temperature advection and the continious rising surface temperature over northern Zhejiang province stored a great energy of instability, and the upper cold temperature advection greatly promoted the instability. The water vapour analysis revealed that the warm and moist southwest air current at 850hPa transported water vapour to the squall occarence place where is just the interface of dry and moist air or the front zone of dew point, but the water vapour at 500hPa and 700hPa was transported by northwest air current. This is the squall weather process's feature.
A squall weather process over the northern Zhejiang Province is analyzed. The results show that the squall took place under the condition of upper forward trough and in the instability area near the sub tropical high. The warm and moist temperature advection and the continious rising surface temperature over northern Zhejiang province stored a great energy of instability, and the upper cold temperature advection greatly promoted the instability. The water vapour analysis revealed that the warm and moist southwest air current at 850hPa transported water vapour to the squall occarence place where is just the interface of dry and moist air or the front zone of dew point, but the water vapour at 500hPa and 700hPa was transported by northwest air current. This is the squall weather process's feature.
2003, 31(2):101-104108.
Abstract:
The acid rain observation in Nanning is analyzed.The results show that the acid rain frequence and the acidity in Nanning are both high, the frequency of acid rain in 2000 is 61.8%.The frequence is lower in summer half year and higher in winter half year. The relationship between acid rain and weather in different seasons is also analyzed. The seasonal distribution characters of acid rain have obviously relativity with the upper and surface wind direction freguency and the atmospheric circulation.
The acid rain observation in Nanning is analyzed.The results show that the acid rain frequence and the acidity in Nanning are both high, the frequency of acid rain in 2000 is 61.8%.The frequence is lower in summer half year and higher in winter half year. The relationship between acid rain and weather in different seasons is also analyzed. The seasonal distribution characters of acid rain have obviously relativity with the upper and surface wind direction freguency and the atmospheric circulation.
2003, 31(2):105-108.
Abstract:
The characters of ultraviolet radiation in Nanning city are discussed, its relation with global radiation and cloudage is also analyzed. It points out that the character of ultraviolet radiation in Nanning varies obviously in different seasons,it is the strongest in summer and the weakest in winter. The ultraviolet radiation becomes stronger since April and becomes weaker since October every year and is the strongest between 12 o'clock and 14 o'clock everyday. Its correlation coefficient with global radiation is 0.67 and the correletion with cloudage in some months is obvious.The daily varying curve is the most smooth in sunny days,worse smooth in cloudy days,the worst smooth in little cloudy days.
The characters of ultraviolet radiation in Nanning city are discussed, its relation with global radiation and cloudage is also analyzed. It points out that the character of ultraviolet radiation in Nanning varies obviously in different seasons,it is the strongest in summer and the weakest in winter. The ultraviolet radiation becomes stronger since April and becomes weaker since October every year and is the strongest between 12 o'clock and 14 o'clock everyday. Its correlation coefficient with global radiation is 0.67 and the correletion with cloudage in some months is obvious.The daily varying curve is the most smooth in sunny days,worse smooth in cloudy days,the worst smooth in little cloudy days.
2003, 31(2):109-114.
Abstract:
1990～ 2 0 0 0年北京地區大氣能見度的統計分析表明 ,大氣能見度有明顯的年際變化、季節變化和日變化特征。冬、春、秋三季及全年日平均年際變化表現為 2 0世紀 90年代中期能見度較好 ,前期和末期能見度較差 ,2 0 0 0年能見度迅速好轉 ;夏季能見度年際變化在 1997年以前與其他季節相反 ,1995年能見度最差。大氣能見度與同期地面氣象條件和主要污染物濃度的相關性比較表明 ,春、夏、秋三季以空氣濕度、PM10 和風速為主要影響因子 ,冬季以PM10 、SO2 、空氣濕度和風速為主要影響因子。能見度與相對濕度和空氣污染物濃度呈反相關 ,與風速的相關性較為復雜 (有時呈正相關 ,有時呈反相關 ) ;高濕度 (相對濕度 f≥ 80 % )、小風速 (地面風速u≤ 2m·s-1)和霧是造成低能見度的主要氣象條件 ;污染物濃度對能見度的影響以冬季最為明顯 ,秋季次之 ,夏季最差
1990～ 2 0 0 0年北京地區大氣能見度的統計分析表明 ,大氣能見度有明顯的年際變化、季節變化和日變化特征。冬、春、秋三季及全年日平均年際變化表現為 2 0世紀 90年代中期能見度較好 ,前期和末期能見度較差 ,2 0 0 0年能見度迅速好轉 ;夏季能見度年際變化在 1997年以前與其他季節相反 ,1995年能見度最差。大氣能見度與同期地面氣象條件和主要污染物濃度的相關性比較表明 ,春、夏、秋三季以空氣濕度、PM10 和風速為主要影響因子 ,冬季以PM10 、SO2 、空氣濕度和風速為主要影響因子。能見度與相對濕度和空氣污染物濃度呈反相關 ,與風速的相關性較為復雜 (有時呈正相關 ,有時呈反相關 ) ;高濕度 (相對濕度 f≥ 80 % )、小風速 (地面風速u≤ 2m·s-1)和霧是造成低能見度的主要氣象條件 ;污染物濃度對能見度的影響以冬季最為明顯 ,秋季次之 ,夏季最差
2003, 31(2):115.
Abstract:
In combination with airborn GPS real-time position parameter, a wind speed and direction calculating program is given with longitudinal and latitudinal starting points and destination ,thus an important base to real-time follow and the tracks of advection diffusion and position control in the seeding area is provided. It's more accurate than the way that time and space extension in the fixed-point and fixed-time wind speed and direction detected in neighbour area. In additation, the possible error in computing PMS particle concentration produced by wind speed and direction is given.
In combination with airborn GPS real-time position parameter, a wind speed and direction calculating program is given with longitudinal and latitudinal starting points and destination ,thus an important base to real-time follow and the tracks of advection diffusion and position control in the seeding area is provided. It's more accurate than the way that time and space extension in the fixed-point and fixed-time wind speed and direction detected in neighbour area. In additation, the possible error in computing PMS particle concentration produced by wind speed and direction is given.
2003, 31(2):119-123.
Abstract:
The trend of atmospheric sounding technology is introduced.The direction and key problem of trendency of atmospheric sounding technology are proposed.
The trend of atmospheric sounding technology is introduced.The direction and key problem of trendency of atmospheric sounding technology are proposed.
2003, 31(2):124-128.
Abstract:
From the previous research result it can be found that fine particle congregates most of the nocuous matter of aerosol. These matters can enter into respiration system of humanbeing, and be deposited in the alveolus. Fine particles seriously affect people's health, and make environment even worse. Experts have attached great importance to the research in this field. The background,project,science policy and problem of the PM 2.5 research in New York City are given. The measurement sites and some already acquired primary results are particularly introduced in order that all these can provide some help to similar research in China.
From the previous research result it can be found that fine particle congregates most of the nocuous matter of aerosol. These matters can enter into respiration system of humanbeing, and be deposited in the alveolus. Fine particles seriously affect people's health, and make environment even worse. Experts have attached great importance to the research in this field. The background,project,science policy and problem of the PM 2.5 research in New York City are given. The measurement sites and some already acquired primary results are particularly introduced in order that all these can provide some help to similar research in China.
External LinksChina Meteorological AdministrationCMA Meteorological Observation CentreChinese Academy of Meteorological SciencesBeijing Meteorological ServiceNational Satellite Meteorological Center
You are thevisitors
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.