CAJ | 학술논문

利用1998年夏季GAME-TIBET lOP期间的探空、降水和雷达资料分析了季风期降水和CAPE、LCL热力参量的日变化及其之间的关系.降水的日变化很明显,最大的降水和CAPE的最大值出现在同一时间段.6 km和8.5 km高度内的大气层结在大部分时间是不稳定的.0400-0800时间内6 km以下9 km以上的稳定层结阻碍了对流系统的发展,降水的日变化与这些热力参数的日变化有关.同时,利用三维云模式模拟了降水的日变化和水汽及温度对降水的影响,云模式再现了降水和回波强度的最大和最小值,晚上低层的高湿度是影响降水的重要因素.
이용1998년하계GAME-TIBET lOP기간적탐공、강수화뢰체자료분석료계풍기강수화CAPE、LCL열력삼량적일변화급기지간적관계.강수적일변화흔명현,최대적강수화CAPE적최대치출현재동일시간단.6 km화8.5 km고도내적대기층결재대부분시간시불은정적.0400-0800시간내6 km이하9 km이상적은정층결조애료대류계통적발전,강수적일변화여저사열력삼수적일변화유관.동시,이용삼유운모식모의료강수적일변화화수기급온도대강수적영향,운모식재현료강수화회파강도적최대화최소치,만상저층적고습도시영향강수적중요인소.
The soundings, precipitation and radar data obtained from IOP of GAME-TIBET in the summer of 1998 are used to analyze the diurnal variations of precipitation and thermodynamic variables CAPE. LCL and relationships between precipitation and thermodynamic variables in monsoon season. The diurnal variations of precipitation are obvious. Maximum precipitation appears at the same time when CAPE reaches its maximum value. The atmospheric layer between 6 km and 8.5 km is unstable in most of the time, the strong stable layers below 6 km and above 9 km from 0400 to 0800 resists the development of convective system. The diurnal variation of precipitation is related to diurnal variations of thermodynamic variables.The diurnal variation of precipitation and effects of water vapor and temperature on precipitation are simulated by a three-dimensional cloud model. The cloud model reproduces the maxima and minima of diurnal variations of precipitation and reflectivity. The high humidity in low level at night is the key factor for the precipitation.