沙漠与绿洲气象
沙漠與綠洲氣象
사막여록주기상
DESERT AND OASIS METEOROLOGY
2011年
4期
5-8
,共4页
陈爱京%黄海云%张璞%李杨
陳愛京%黃海雲%張璞%李楊
진애경%황해운%장박%리양
北疆%积雪深度%积雪密度%温度
北疆%積雪深度%積雪密度%溫度
북강%적설심도%적설밀도%온도
Northern Xinjiang%snow depth%snow density%temperature
采用2009年和2010年2月中旬雪深、分层积雪密度、含水率和温度野外调查数据,分析了北疆地区积雪参数属性特征,雪深-温度和密度-含水率的关系。①雪深达10cm,雪土界面温度比积雪表面高3℃左右,超过10cm,偏高6~10℃;雪土界面温度与积雪深度呈高度线性相关,积雪越深,保温作用越显著;②2010年1月以来,北疆地区多降雪天气,2月积雪深度比2009年同期雪深明显增加;③2010年2月,北疆地区积雪密度均值总体范围在0.15~0.272g/cm^3,比2009年同期积雪密度0.087~0.225g/cm^3偏大;④在一定体积含水率间隔范围,积雪密度和体积含水率问呈线性相关。
採用2009年和2010年2月中旬雪深、分層積雪密度、含水率和溫度野外調查數據,分析瞭北疆地區積雪參數屬性特徵,雪深-溫度和密度-含水率的關繫。①雪深達10cm,雪土界麵溫度比積雪錶麵高3℃左右,超過10cm,偏高6~10℃;雪土界麵溫度與積雪深度呈高度線性相關,積雪越深,保溫作用越顯著;②2010年1月以來,北疆地區多降雪天氣,2月積雪深度比2009年同期雪深明顯增加;③2010年2月,北疆地區積雪密度均值總體範圍在0.15~0.272g/cm^3,比2009年同期積雪密度0.087~0.225g/cm^3偏大;④在一定體積含水率間隔範圍,積雪密度和體積含水率問呈線性相關。
채용2009년화2010년2월중순설심、분층적설밀도、함수솔화온도야외조사수거,분석료북강지구적설삼수속성특정,설심-온도화밀도-함수솔적관계。①설심체10cm,설토계면온도비적설표면고3℃좌우,초과10cm,편고6~10℃;설토계면온도여적설심도정고도선성상관,적설월심,보온작용월현저;②2010년1월이래,북강지구다강설천기,2월적설심도비2009년동기설심명현증가;③2010년2월,북강지구적설밀도균치총체범위재0.15~0.272g/cm^3,비2009년동기적설밀도0.087~0.225g/cm^3편대;④재일정체적함수솔간격범위,적설밀도화체적함수솔문정선성상관。
By using snow depth, snow-layers density, water content and snow-layer temperature data of northern Xinjiang in mid-February of 2009 and 2010,this study analyzed the property features of snow parameters and their relationships. The results showed that, ①The temperature of snow-soil interface was about 3 ℃ higher than the snow surface when snow depth was 10 cm,so did 6-10 ℃ with snow depth more than 10 cm. There was a linear correlation between snow-soil interface temperature and snow depth; the deeper the snow cover,the more significant the holding thermal effect. ②With more snow weather in northern Xinjiang since January 2010,snow depth in February 2010 was significantly higher than that in 2009 over the same period. ③Mean snow density range of 0.15-0.272 g/cm^3 in February 2010 was higher than that in 2009 with snow density range of 0.087-0.225 g/cm^3 through Northern Xinjiang. ④In certain interval range of volumetric water content, the snow density linearly correlated with the volume water content.