CAJ | 학술논문

利用玛曲国家基本气象观测站1971-2010年的总云量、低云量等观测数据，用线性趋势分析、小波分析等方法对玛曲地区近40 a总云量、低云量的月、季、年际、年代际变化和周期性变化特征进行分析。研究表明，近40 a来，平均总云量距平在-0.1%~0.1%之间，保持了很好的稳定性，平均低云量以4.0%/10 a的速率递增；春、夏、秋季低云量呈现出不同程度的增多趋势，夏季增加趋势非常明显达7.3%/10 a。平均总云量周期变化不明显，平均低云量有明显的6~7a 的周期。玛曲地区在总云量保持稳定的情况下低云量不断增多，夏季低云量的增多趋势非常明显，且积雨云的增多是主要特征，是对玛曲草原气候变化的一种响应机制，反映出在气候变暖的大背景下，玛曲草原对流性天气活动频繁。
이용마곡국가기본기상관측참1971-2010년적총운량、저운량등관측수거，용선성추세분석、소파분석등방법대마곡지구근40 a총운량、저운량적월、계、년제、년대제변화화주기성변화특정진행분석。연구표명，근40 a래，평균총운량거평재-0.1%~0.1%지간，보지료흔호적은정성，평균저운량이4.0%/10 a적속솔체증；춘、하、추계저운량정현출불동정도적증다추세，하계증가추세비상명현체7.3%/10 a。평균총운량주기변화불명현，평균저운량유명현적6~7a 적주기。마곡지구재총운량보지은정적정황하저운량불단증다，하계저운량적증다추세비상명현，차적우운적증다시주요특정，시대마곡초원기후변화적일충향응궤제，반영출재기후변난적대배경하，마곡초원대류성천기활동빈번。
Using the data of total cloud coverage and low cloud coverage from the national basic meteorological stations in Maqu during 1971-2010, with a linear trend analysis and wavelet analysis methods, characteristics of monthly, quarterly, annual, inter-decadal and peridical change of the total cloud coverage and low cloud in recent 40 years were analyzed. The studies have shown that over the past 40 years, the average total cloud amount anomaly is between -0.1%~0.1%, maintaining a good stability, the average low cloud coverage increases at the rate of 4.0%/10 a ; low cloud coverage in spring, summer and autumn show varying degrees of increase trends, obviously up to 7.3%/10 a in the summer; the periodic changes of mean total cloud coverage are not obvious; the average cycle of low cloud coverage is clear which is 6~7 a; in the Maqu region the total cloud amount remains stable increasing while the low cloud coverage increases, particularly during the summer with the main feature, the cumulonimbus clouds, indicating a response mechanism of climate change which reflected the convective weather occurs frequently in the context of climate warming in the Maqu grassland.