ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Volume 23,Issue 3,1997 Table of Contents
1997, 23(3):3-7.
DOI: 10.7519/j.issn.1000-0526.1997.3.001
Abstract:
Based on the basic principle of analytical hierachy process ,and coupled with characteristic meteorological modernization operation benefit ,the index system of meteorological modernization operation benefit was discussed ,and the evaluation system of benefit of meteorological modernization was established.
Based on the basic principle of analytical hierachy process ,and coupled with characteristic meteorological modernization operation benefit ,the index system of meteorological modernization operation benefit was discussed ,and the evaluation system of benefit of meteorological modernization was established.
1997, 23(3):8-14.
DOI: 10.7519/j.issn.1000-0526.1997.03.002
Abstract:
A “black storm ”with severe destructibility occurred in the Northwest Region of China during 4-6 May 1993 (“93.5”).In order to diagnose the heat and moisture budgets of the black storm during its development ,here used were the output data from control simulation for this case using improved MM4 with high resolution PBL parameterization and 40km fine mesh,and the equations of heat and moisture budgets.The diagnostic results for the apparent heat source(Q1) and apparent moisture sink (Q2) indicated that the vertical integrations of the Q1 exhibited marked heating and cooking bands in ahead and behind parts of the black storm ,respectively.The areaaveraged vertical profiles of the Q1 and Q2 in the black storm region revealed that heating of the Q1 for the black storm occurred mainly upper levels of the troposphere,the heating in the midtropospheric levels occurred mainly the developing early stage of the black storm,in correspondence with Q1 ,the marked moisteningcooling and dryingheating of the Q2 occurred the lower levels and middle levels,respectively.These results are not only consistent with observed rapid and intense detemperature rate and showery rain with snow due to the black storm event ,but also provides physically basis for improving and developing mesoscale numerical models used to simulate and forecast the balck storm.
A “black storm ”with severe destructibility occurred in the Northwest Region of China during 4-6 May 1993 (“93.5”).In order to diagnose the heat and moisture budgets of the black storm during its development ,here used were the output data from control simulation for this case using improved MM4 with high resolution PBL parameterization and 40km fine mesh,and the equations of heat and moisture budgets.The diagnostic results for the apparent heat source(Q1) and apparent moisture sink (Q2) indicated that the vertical integrations of the Q1 exhibited marked heating and cooking bands in ahead and behind parts of the black storm ,respectively.The areaaveraged vertical profiles of the Q1 and Q2 in the black storm region revealed that heating of the Q1 for the black storm occurred mainly upper levels of the troposphere,the heating in the midtropospheric levels occurred mainly the developing early stage of the black storm,in correspondence with Q1 ,the marked moisteningcooling and dryingheating of the Q2 occurred the lower levels and middle levels,respectively.These results are not only consistent with observed rapid and intense detemperature rate and showery rain with snow due to the black storm event ,but also provides physically basis for improving and developing mesoscale numerical models used to simulate and forecast the balck storm.
1997, 23(3):15-19.
DOI: 10.7519/j.issn.1000-0526.1997.03.003
Abstract:
On the fundamental of the Coutaque's index of monthly aridity and utilizing the Kppen limit it of the dry steppe climate and wet forest climate in the summer pluvial regions,the examination and revision of the climatic information are conducted.Considering the climatic characteristics of Guangdong,a formula of climatic index of ariditty and wetness has been presented. The aridity and wetness index are computed and analysed with the data of a year,sumer and winter half year,and some year or months in Guangdong.These results are improtant for agriculture porduction and economy planning.
On the fundamental of the Coutaque's index of monthly aridity and utilizing the Kppen limit it of the dry steppe climate and wet forest climate in the summer pluvial regions,the examination and revision of the climatic information are conducted.Considering the climatic characteristics of Guangdong,a formula of climatic index of ariditty and wetness has been presented. The aridity and wetness index are computed and analysed with the data of a year,sumer and winter half year,and some year or months in Guangdong.These results are improtant for agriculture porduction and economy planning.
1997, 23(3):20-24.
DOI: 10.7519/j.issn.1000-0526.1997.3.004
Abstract:
The effect of city on meteorological elements (for example ,temperature)are investigated.As the urban climates in quite different from countryside,the shape of urban area in meteorological map is like a island clearly.So it is clled artificial climate island.For example,they are:heat island (to temperature),rain island(precipitation),dry island(relative humidity )and so on.Urban climate is so special that it can cause many disasters,such sa high temperature disaster ,rural flood,city gale ,acid rain,acid fog,and photochemicla smog,etc.The city has also its own meteorological phenomenon,like city heatland circulation(country breeze).Citys are the most main origins in the world ,and therefore,it is harmful to health of inhabitant living in the artificial air pollution islands.
The effect of city on meteorological elements (for example ,temperature)are investigated.As the urban climates in quite different from countryside,the shape of urban area in meteorological map is like a island clearly.So it is clled artificial climate island.For example,they are:heat island (to temperature),rain island(precipitation),dry island(relative humidity )and so on.Urban climate is so special that it can cause many disasters,such sa high temperature disaster ,rural flood,city gale ,acid rain,acid fog,and photochemicla smog,etc.The city has also its own meteorological phenomenon,like city heatland circulation(country breeze).Citys are the most main origins in the world ,and therefore,it is harmful to health of inhabitant living in the artificial air pollution islands.
1997, 23(3):25-29.
DOI: 10.7519/j.issn.1000-0526.1997.3.005
Abstract:
In terms of an Artificial Neural Netework(ANN),a forecast and diagnostic analysis system of the farmland soil moisture is established.A mixed model and a model involving the extension of time series of the artifivial neural network may be given in the system,respectively,based on soil humidity change and physical factors influencing its change as well.This system may be used to estimate depth of infiltrating water into soil and the change of soil moisture of different soil layers.Application results show that the system operated in interactive mode with Chinese character menu is convenient and superior on prediction and diagnostic analysis for farmland soil moisture due to ANN marked by quasidynamical characterstic,adjusting parameter and structure.The sysytem is suitable to relieve the calamity of the agrometerological drought and to manage water resources.
In terms of an Artificial Neural Netework(ANN),a forecast and diagnostic analysis system of the farmland soil moisture is established.A mixed model and a model involving the extension of time series of the artifivial neural network may be given in the system,respectively,based on soil humidity change and physical factors influencing its change as well.This system may be used to estimate depth of infiltrating water into soil and the change of soil moisture of different soil layers.Application results show that the system operated in interactive mode with Chinese character menu is convenient and superior on prediction and diagnostic analysis for farmland soil moisture due to ANN marked by quasidynamical characterstic,adjusting parameter and structure.The sysytem is suitable to relieve the calamity of the agrometerological drought and to manage water resources.
1997, 23(3):30-33.
DOI: 10.7519/j.issn.1000-0526.1997.3.006
Abstract:
The management,advisory and application system of the crop yield forecasting models was programmed .The software can create the model databases for many types of the crop yield forecasting models,provide the advisory of the crop yield forecast and give automatically the forecasting results.
The management,advisory and application system of the crop yield forecasting models was programmed .The software can create the model databases for many types of the crop yield forecasting models,provide the advisory of the crop yield forecast and give automatically the forecasting results.
1997, 23(3):34-37.
DOI: 10.7519/j.issn.1000-0526.1997.3.007
Abstract:
A objective method and automatic operational system by using Kalman filter technique based on the factors of T63 output products for casting the 48hours' maximum and minimum temperature are given.The results show that the forecasting method can complement the defect that the temperature forcasting in prefecture observatory mainly depends on subjective method and has a certain ability to forecast the temperature.
A objective method and automatic operational system by using Kalman filter technique based on the factors of T63 output products for casting the 48hours' maximum and minimum temperature are given.The results show that the forecasting method can complement the defect that the temperature forcasting in prefecture observatory mainly depends on subjective method and has a certain ability to forecast the temperature.
1997, 23(3):38-41.
DOI: 10.7519/j.issn.1000-0526.1997.03.008
Abstract:
Based on the longterm data(1964-1994) of a comparison observation between Jinghong city and rurality ,the effects of development of Jinghong city on climate are studied.The results indicate that with the rapid development of Jinghong city,the urban heat island effect is gradually increasing;the rainfall,air humidity,numbers of fog days,sunshine duration,direct solar radiation and global radiation over the city attenuate remarkably,but the sky radiation is increasing gradually.The urban heat island effect is of seasonality obviously,and iss more obvious in dry season than in rainy season,far more obvious at night than day in dry season,far more obvious at day than night in rainy season.
Based on the longterm data(1964-1994) of a comparison observation between Jinghong city and rurality ,the effects of development of Jinghong city on climate are studied.The results indicate that with the rapid development of Jinghong city,the urban heat island effect is gradually increasing;the rainfall,air humidity,numbers of fog days,sunshine duration,direct solar radiation and global radiation over the city attenuate remarkably,but the sky radiation is increasing gradually.The urban heat island effect is of seasonality obviously,and iss more obvious in dry season than in rainy season,far more obvious at night than day in dry season,far more obvious at day than night in rainy season.
9 Agroclimatic Similarity Diagnosic Analysis for Introduction of Cotton Varieties in Shandong Province
1997, 23(3):42-45.
DOI: 10.7519/j.issn.1000-0526.1997.3.009
Abstract:
Based on the agroclimatic analogue principle，the key similarity elements and their weighting coefficients were screened by cluster analysis method．The weighted mean of modified Euclidean distances is the similarity distance as a quantitative index，and the agroclimatic analogue diagnostic analysis of introducing cotton varieties was completed，showing suitable areas and subsuitable areas for introducing spring sown cotton and summer sown cotton varieties in Shandong．
Based on the agroclimatic analogue principle，the key similarity elements and their weighting coefficients were screened by cluster analysis method．The weighted mean of modified Euclidean distances is the similarity distance as a quantitative index，and the agroclimatic analogue diagnostic analysis of introducing cotton varieties was completed，showing suitable areas and subsuitable areas for introducing spring sown cotton and summer sown cotton varieties in Shandong．
1997, 23(3):46-49.
DOI: 10.7519/j.issn.1000-0526.1997.3.010
Abstract:
According to threepopulation model in mathematicalecological theory，considering the interrelation among ear，stem and leaf of winter wheat in Xuhuai Region of Jiangsu Province，an interaction model was setup，which described their dry matter weight．The study carried out is very useful to winter wheat growth modeling．
According to threepopulation model in mathematicalecological theory，considering the interrelation among ear，stem and leaf of winter wheat in Xuhuai Region of Jiangsu Province，an interaction model was setup，which described their dry matter weight．The study carried out is very useful to winter wheat growth modeling．
1997, 23(3):50-54.
DOI: 10.7519/j.issn.1000-0526.1997.3.011
Abstract:
The dividing method of the rainfall pattern in July，the circulation features and the forecasting criteria of each rainfallpattern are summarized．The relationship is analysed between the three rainfall patterns and the factors of SST in eastern equatorial Pacific，the circulation at500hPa level in Winter，the subtropical high in western Pacific in Spring，as well as the QBO windphase in Summer．This method is of some guide to the forecast of China precipitation inJuly．
The dividing method of the rainfall pattern in July，the circulation features and the forecasting criteria of each rainfallpattern are summarized．The relationship is analysed between the three rainfall patterns and the factors of SST in eastern equatorial Pacific，the circulation at500hPa level in Winter，the subtropical high in western Pacific in Spring，as well as the QBO windphase in Summer．This method is of some guide to the forecast of China precipitation inJuly．
1997, 23(3):55-57.
DOI: 10.7519/j.issn.1000-0526.1997.3.012
Abstract:
An analysis of the recording raingauge records at Jining from April to October in 1963—1987 was made．The heavy rain intensity formula were developed with diagram method．
An analysis of the recording raingauge records at Jining from April to October in 1963—1987 was made．The heavy rain intensity formula were developed with diagram method．
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ISSN:1000-0526 CN:11-2282/P