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Applied with Multi-scale Data to Forecast Severe Convcetive Weather

Author: DuKun
Tutor: WeiMing
School: Nanjing University of Information Engineering
Course: Atmospheric Remote Sensing Science and Technology
Keywords: Strong convective Doppler weather radar V-3θ energy structure analysis Forecast
CLC: P458.121.1
Type: Master's thesis
Year: 2011
Downloads: 86
Quote: 1
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Abstract


Strong convective weather atmospheric convective activity strongly the development of severe weather phenomena , is the influence of one of the disastrous weather . The atmosphere in the occurrence of deep moist convection system requires three basic conditions : the instability of the energy structure , moisture conditions and trigger mechanism . The development of deep moist convection in the atmosphere involves a three-phase changes of water and precipitation occurred , so in addition to the heat in the atmosphere , wind direction and speed with height and cloud microphysical processes and precipitation in the atmosphere deep moist convection formation , structure evolution have a significant impact . This paper analyzes the structure and evolution of severe convective weather radar echo characteristics classified summary analysis of its weather models , ground handling and sounding better identify the Doppler weather radar echo ; quoted rules to collect observational data , and extract the desired physical quantity elements to create a single station V-3θ diagram analysis of the energy structure of the strong convective weather characteristics were summarized and the energy structural characteristics before the occurrence of severe convective weather , the V- 3θ strong convective weather forecast explore . Reflect atmospheric stratification stability index validation analysis . Doppler weather radar , satellite , terrestrial and sounding multi-scale data , integrated use of the strong convection radar echo the atmospheric energy structure analysis , in the short-term forecast of MICAPS forecasting platform products and numerical prediction product components by means of Fujian May 1, 2005 , and March 5 , 10 years and Guangdong on April 17 , 11 years , three times a case of severe convective weather analysis , and draw some useful conclusions . Through research and analysis , based on Doppler radar data, the the atmospheric energy structure analysis and conventional weather analysis and other means , to establish the mechanism of the conceptual model of severe weather forecast , rich short-term forecast of the means available to improve the level of short-term forecasting useful exploration .

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CLC: > Astronomy,Earth Sciences > Atmospheric science (meteorology ) > Weather Forecast > Weather analysis of the process > Profile analysis > Individual analysis > Analysis of the precipitation process > Analysis of torrential rain
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