CAJ | 학술논문

采用耦合湖泊模型的 WRF CLM 模式模拟山谷盆地中洱海的湖泊效应，并利用陆面（农田）和湖面的站点观测资料对模式进行了验证和校验。基于数值模式的模拟结果，分析了季风和非季风期间，洱海存在与否对山谷盆地局地环流及大气边界层结构的影响。发现非季风期湖泊对局地环流及大气边界层影响显著。相对于陆地，湖泊白天湍流通量输送少，湍流发展弱，大气边界层高度低。如果湖泊不存在，白天苍山山谷风只能上升至约200 m 的高度，没有明显的山谷风环流形成；夜间则山风较强，两侧山风共同作用在山谷，环流高度约600 m。季风期，受降水天气影响，局地环流发展不充分。白天湖面辐散以及夜间湖泊南部的气旋式环流弱，湖泊作用没有非季风期明显。云的形成导致边界层高度较低。夜间，湖泊增强释放潜热、感热作用明显；此时湍流发展，夜间边界层反而比白天高。
채용우합호박모형적 WRF CLM 모식모의산곡분지중이해적호박효응，병이용륙면（농전）화호면적참점관측자료대모식진행료험증화교험。기우수치모식적모의결과，분석료계풍화비계풍기간，이해존재여부대산곡분지국지배류급대기변계층결구적영향。발현비계풍기호박대국지배류급대기변계층영향현저。상대우륙지，호박백천단류통량수송소，단류발전약，대기변계층고도저。여과호박불존재，백천창산산곡풍지능상승지약200 m 적고도，몰유명현적산곡풍배류형성；야간칙산풍교강，량측산풍공동작용재산곡，배류고도약600 m。계풍기，수강수천기영향，국지배류발전불충분。백천호면복산이급야간호박남부적기선식배류약，호박작용몰유비계풍기명현。운적형성도치변계층고도교저。야간，호박증강석방잠열、감열작용명현；차시단류발전，야간변계층반이비백천고。
The lake effect of Erhai in the complex valley and basin area was simulated using the WRF CLM model which in-cludes a lake module.The observational stations over cropland and lake were used to verify the model results.We have ana-lyzed the lake effect of Erhai on local circulation and boundary layer structure during monsoon and non-monsoon periods with the model.The experiments with or without Erhai lake during non-monsoon period show that Erhai lake has a great impact on the local circulation and boundary layer structure.Compared with land surface,lake surface transfers less turbulent flux,and the development of turbulence is weaker in the daytime,which leads to lower boundary height.Valley breeze only reaches up to 200 m without the lake breeze.There is no mountain-valley breeze circulation in the nolake experiment.In the evening,the strong synergism of mountain breeze of Cangshan and Yu’anshan makes the circulation height reaches up to 600 m.Affected by precipitation system,local circulation can't develop well during the monsoon period.Divergence flow during the daytime and cy-clonic circulation during the nighttime are weaker in monsoon periods than that in non-monsoon periods.In the daytime,there are clouds formed,and the boundary layer height is low.In the evening,the difference of water vapor pressure between lake surface and air is large,which results to the great value of latent heat flux.At the same time,turbulance developes,and boundary layer height even gets higher than that in the daytime.