CAJ | 학술논문

利用NCEP 每6 h一次的1°×1°格点资料和中尺度模式WRF （V3.2），选用不同的陆面参数化方案，对2010年8月7-8日发生在甘肃舟曲的一次西北地区特大暴雨天气过程进行数值模拟试验。结果表明，此次暴雨过程数值模拟的准确率对陆面参数化方案的选择比较敏感。在WRF模式中，耦合陆面方案比不耦合陆面方案对暴雨的模拟效果更好，耦合陆面方案所模拟的降水分布、地表通量以及地面气象要素都与实况更加接近。耦合不同的陆面方案模拟的降水以及感热通量、潜热通量都存在较大的差别，但是采用不同的陆面方案模拟的地表温度和水汽差别并不大。总体而言，采用PX陆面方案对降水的模拟效果比采用其他方案都合理，与实况最接近。
이용NCEP 매6 h일차적1°×1°격점자료화중척도모식WRF （V3.2），선용불동적륙면삼수화방안，대2010년8월7-8일발생재감숙주곡적일차서북지구특대폭우천기과정진행수치모의시험。결과표명，차차폭우과정수치모의적준학솔대륙면삼수화방안적선택비교민감。재WRF모식중，우합륙면방안비불우합륙면방안대폭우적모의효과경호，우합륙면방안소모의적강수분포、지표통량이급지면기상요소도여실황경가접근。우합불동적륙면방안모의적강수이급감열통량、잠열통량도존재교대적차별，단시채용불동적륙면방안모의적지표온도화수기차별병불대。총체이언，채용PX륙면방안대강수적모의효과비채용기타방안도합리，여실황최접근。
The numeric simulation experi ments coupled with different land surface parameterization schemes were carried out on the rainstorm process in ZhouQu county during 7-8 August 2010 by using NCEP 1° ×1° data with 6 h intervals and WRF V3.2 meso-scale model. The result showed that the forecasting accuracy of numeric simulation was sensitive to the different land surface parameterization schemes. By coupling the land surface scheme, the simulation effect could be improved on precipitation simulation, surface meteorological elements and surface flux significantly. The simulated precipitation, sensible heat flux and latent heat flux presented obvious differences when the different land surface schemes were used in WRF model. However, the simulated surface temperature and water vapor presented little differences when the different schemes were chosen. Comparing all the simulation results, the PX scheme provided more reasonable results than the others.