CAJ | 학술논문

应用遥感资料及塔中80m观测塔探测系统采集的数据，对塔克拉玛干沙漠一次强沙尘暴过境前后情况进行了监测，并分析了近地层短波辐射特性以及风速、风向、温度、湿度、气压的演变特征。结果表明：沙尘暴过境前后，总辐射、反射辐射明显降低，且达到峰值的时间滞后，短波辐射日变化与地面风速日变化相对应，主要受控于湍流作用，沙尘暴不仅严重影响能见度，而且还严重影响到达地表的太阳辐射，从而影响到天气气候。沙尘暴过境前，地面水平风风向经历了多次调整，风向调整时，风速减弱，调整之后，风速加大；沙尘暴过境时风速急剧增强，但风向较为稳定。沙尘暴来临前夕，地面空气干热，处于低压控制之下；而沙尘暴过境时和过境后，地面空气呈湿冷状态，气压急剧上升，最终处于高压控制之下。整场沙尘暴过程是一个降温增湿增压的过程。
응용요감자료급탑중80m관측탑탐측계통채집적수거，대탑극랍마간사막일차강사진폭과경전후정황진행료감측，병분석료근지층단파복사특성이급풍속、풍향、온도、습도、기압적연변특정。결과표명：사진폭과경전후，총복사、반사복사명현강저，차체도봉치적시간체후，단파복사일변화여지면풍속일변화상대응，주요수공우단류작용，사진폭불부엄중영향능견도，이차환엄중영향도체지표적태양복사，종이영향도천기기후。사진폭과경전，지면수평풍풍향경력료다차조정，풍향조정시，풍속감약，조정지후，풍속가대；사진폭과경시풍속급극증강，단풍향교위은정。사진폭래림전석，지면공기간열，처우저압공제지하；이사진폭과경시화과경후，지면공기정습랭상태，기압급극상승，최종처우고압공제지하。정장사진폭과정시일개강온증습증압적과정。
Using the remote sensing data and the observed data from the 80m meteorological tower in the hinterland of Taklimakan desert, we monitored the process of a strong sandstorm passing through Taklimakan desert hinterland, and analyzed the evolution characteristics of shortwave radiation, wind velocity, wind direction, temperature, humidity and pressure in detail in the nearsurface.The results indicated that, at preand post sandstorm periods, the total radiation and reflective radiation decreased obviously, and the peak time lagged. The daily range of shortwave corresponded with wind speed, and was controlled by the turbulence. The sandstorm not only seriously influenced the visibility, but also the total radiation, As a result it affected the climate. The wind direction changed several times before the sandstorm. The wind speed decreased at the change time of wind direction, it increased after that. The wind velocity increased rapid｜y and the wind direction was stable when the sandstorm passing. Before the onset of sandstorm, the air mass was hot and under the control of low pressure. When the sandstorm passing by, the air mass became cold and wet, and the pressure increased sharply. The weather of sandstorm was a process in which temperature decreased, and humidity and pressure increased.