ISSN 1000-0526
CN 11-2282/P

Volume 26,Issue 10,2000 Table of Contents

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  • 1  The drought analysis in 2000 and its outlook
    2000, 26(10):3-9. DOI: 10.7519/j.issn.1000-0526.2000.10.001
    [Abstract](437) [HTML](0) [PDF 534.62 K](566)
    The spatial and temporal characteristics of drought in the north of China from Feb to July, 2000, the features compared with those in China history and aboard, the reasons of drought in atmosphere, ocean, weather and climate features as well as global climate change, the influences on the developments of industry and agriculture, human activities, water resource and ecosystem were analyzed.The prediction of rainfall anomaly and its service in the passed spring and summer are reviewed, and the precipitation predictions in the coming autumn, winter and spring were looking ahead In the end, a suggestion was given that while working out the emergency scheme of drought, protecting the ecosphere environment and water resource, the operational development and study works of meteorology and climate must be enhanced, such as the weather modification, the early warning system as well as the mechanism research of drought.
    2  A Method Determining Prediction Indicator Set for Hailfall:Stepwise Decreasing FAR
    孔燕燕 彭治班 赵秀英 吴宝俊 张纪淮
    2000, 26(10):10-14. DOI: 10.7519/j.issn.1000-0526.2000.10.002
    [Abstract](510) [HTML](0) [PDF 391.98 K](638)
    Some problems determining prediction indicator set for hailfall with stepwise decreasing FAR method,such as the determining procedure,the searching key,the identification and the number of the prediction indicator,were discussed.
    3  Mesoscale Features of Heavy Rain in the Upper Reaches of the Changjiang River
    陈忠明 缪强
    2000, 26(10):15-18. DOI: 10.7519/j.issn.1000-0526.2000.10.003
    [Abstract](739) [HTML](0) [PDF 286.51 K](582)
    The composite analysis of some major physical quantities in a few hours before 12 heavy rains occurring in the upper reaches of the Changjiang River reveales mesoscale features of flow, energy and moisture fields.Analytic results may be applied into prediction of heavy rain in the region.
    4  The Analysis of Weather Pattern in the Heavy Rain Process Over Songhuajiang and Nenjiang in 1998
    陈立亭 孙永罡 白人海
    2000, 26(10):19-23. DOI: 10.7519/j.issn.1000-0526.2000.10.004
    [Abstract](482) [HTML](0) [PDF 359.38 K](604)
    The weather circulation pattern of the summer tight precipitation period and the main heavy rain course in 1998 were analyzed with the NCAR/NCEP and daily precipitation data from 94 surface stations in Songhuajiang and Nenjiang area.The continuous rainfall can be contributed to the following weather patterns:(1)the steady blocking pattern in the middle and high latitude of Asia,(2) controlled by cold vortex long term,(3)advancing north ward of the subtropical high over the west Pacific and its suitable position,(4)the strong monsoon in midsummer.
    5  Vapor Transport of Heavy Rain over Songhuajiang and Nenjiang in 1998
    孙永罡 白人海
    2000, 26(10):24-28. DOI: 10.7519/j.issn.1000-0526.2000.10.005
    [Abstract](462) [HTML](0) [PDF 405.87 K](567)
    The NCAR/NCEP re-analysis data and the daily precipitation data in July—August,1998 from 94 surface stations in the Songhuajiang and Nenjiang area were used to analyze vapor transport,which causes a severe flood of 1998.The analysis considers that the meridional transport of abundant vapor is the key.The water source comes from the low latitude south of the subtropical high over the west Pacific and the Indian Ocean.The strength of south jet,position of the subtropical high over the west Pacific and so on, are closely related to summer monsoon, affecting vapor transport.
    6  The Relationship between the Precipitation and the Water Level over Songhuajiang and Nenjiang
    白人海 李帅 王明洁
    2000, 26(10):29-34. DOI: 10.7519/j.issn.1000-0526.2000.10.006
    [Abstract](470) [HTML](0) [PDF 359.90 K](567)
    The meteorological and hydrological data in the Songhuajiang and Nenjiang area were used to discuss the effect of precipitation on the change of the water level.The conclusion is that there is a close relationship between the water level in floodwater season and the precipitation over the Songhuajiang and Nenjiang area.The severe flood in the summer of 1998 was caused by more precipitation over the Nenjiang river.The daily change of water level is closely related to the upstream water level and the precipitation over the near region.
    7  The Features of Meso-scale Rain Clusters over Nenjiang and Songhuajiang in 1998
    许秀红 王承伟 石定朴 徐宝祥
    2000, 26(10):35-40. DOI: 10.7519/j.issn.1000-0526.2000.10.007
    [Abstract](417) [HTML](0) [PDF 12.66 M](671)
    Surface observation of hourly precipitation, infrared pictures of stationary satellite and TBB were used to discuss the feature of two cloud types of meso-scale rain cluster and TBB over the Nenjiang and Songhuajiang area in 1998.The conclusion shows the features of the meso scale rain cluster generation, development,movement, and extinction.
    8  The Application of Stepwise Decreasing FAR Method to Hail Cloud Recognition
    刘子英 陆海席 赵秀英 徐玉强 孙艳辉 张纪淮
    2000, 26(10):41-44. DOI: 10.7519/j.issn.1000-0526.2000.10.008
    [Abstract](756) [HTML](0) [PDF 267.85 K](732)
    A detail method of recognizing hail cloud was introduced by stepwise decreasing FAR.The synoptic pattern,convective parameter and radar echo parameter were used for the factors to produce the indicator set of hail cloud recognition.
    9  Contrast Analysis of E601 Versus Small-sized Evaporation Gauge
    2000, 26(10):45-48. DOI: 10.7519/j.issn.1000-0526.2000.10.009
    [Abstract](484) [HTML](0) [PDF 264.18 K](606)
    The evaporation capacity in the summer (May to Sep.) from 1986 to 1997 and ice surface evaporation in the winter of 1997 ( next Apr.),measured by small-sized evaporation gauge,were compared with the measurement by E601 at Changchun National Standard climatic station.The conversion coefficient of two Rinds evaporation data was obtained by correlation analysis and contrast.The climate estimated values of E601 evaporation for years in succession were obtained.
    10  The Effective Test of the Numerical Prediction Products and the Application to Rainfall Prediction
    王家芬 王志利 林曲凤
    2000, 26(10):49-52. DOI: 10.7519/j.issn.1000-0526.2000.10.010
    [Abstract](854) [HTML](0) [PDF 296.44 K](632)
    Through the test,contrast and analysis among the three numerical prediction products of T106 HLAFS and Japanese model used in present work on the effect of Yantai rainfall prediction,it is found that the numerical prediction products have some directive functions in the rainstorm and rainfall prediction,and Japanese model is better than HLAFS.Yet,HLAFS is better than T106 on the effect of the rainstorm and general rainfall prediction.The accurate rate of rainfall prediction of the three prediction products to the low pressure and upside down trough is commonly higher,and the accuracy of rainfall is 75.9% when the three prediction products all predict that there will be rainfall.
    11  Diagnosis Analyses of the Heavy Rain Process over the East Part of the Qingzang Plateau in September 1999
    李海红 戴升 史津梅 裴少阳
    2000, 26(10):53-55. DOI: 10.7519/j.issn.1000-0526.2000.10.011
    [Abstract](580) [HTML](0) [PDF 236.54 K](621)
    The diagnosis analyses of the heavy rain process over the east part of the Qingzang Plateau on 9—10 September 1999 was made, and the cloud band pattern and physics fields of the heavy rain process was summarized.
    12  New Generation Weather Forecast System in Henan Province
    孙景兰 李平 田万顺 郑世林 布亚林
    2000, 26(10):56-57. DOI: 10.7519/j.issn.1000-0526.2000.10.012
    [Abstract](502) [HTML](0) [PDF 3.79 M](641)
    The main substance, function and features of the new generation weather forecast system in Henan province were described.The system developed by Henan Meteorological Observatory consists of two versions, or SGI working station and computer.

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