气象学报
氣象學報
기상학보
ACTA METEOROLOGICA SINICA
2001年
1期
120-128
,共9页
郝为锋%苏晓冰%王庆安%寇正
郝為鋒%囌曉冰%王慶安%寇正
학위봉%소효빙%왕경안%구정
边界层急流%斜压性%空悬逆温%湍流交换。
邊界層急流%斜壓性%空懸逆溫%湍流交換。
변계층급류%사압성%공현역온%단류교환。
分析浙江上虞丘陵山区边界层风、温实测资料，发现在高压形势下，该地边界层急流具有频发性和显著特征。分析表明，丘陵山区地形热力差异导致的气层斜压性，起因于湍流强度日变化的惯性振荡，以及湍流交换引起的动量下传，是该地边界层急流产生的重要机制；而丘陵山区特有的空悬逆温的发生发展，则是急流得以持续的关键因素。
分析浙江上虞丘陵山區邊界層風、溫實測資料，髮現在高壓形勢下，該地邊界層急流具有頻髮性和顯著特徵。分析錶明，丘陵山區地形熱力差異導緻的氣層斜壓性，起因于湍流彊度日變化的慣性振盪，以及湍流交換引起的動量下傳，是該地邊界層急流產生的重要機製；而丘陵山區特有的空懸逆溫的髮生髮展，則是急流得以持續的關鍵因素。
분석절강상우구릉산구변계층풍、온실측자료，발현재고압형세하，해지변계층급류구유빈발성화현저특정。분석표명，구릉산구지형열력차이도치적기층사압성，기인우단류강도일변화적관성진탕，이급단류교환인기적동량하전，시해지변계층급유산생적중요궤제；이구릉산구특유적공현역온적발생발전，칙시급류득이지속적관건인소。
After analyzing the actually wind and temperature data of hillyboundarylayer in Zhejiang Province,we find that the boundary-layer-jet over that area occurs frequently and has distinct features under high pressure situation.The analysis illustrates that,the layer-barocline-feature,resulting from the thermodynamic difference over hill terrain,derives from the inertial oscillation of turbulent intensity′s daily variation,and the moment′s downward transportation led by turbulence exchange are the essential mechanism of boundary-layer-jet′s formation;while, the occurrence and development of hanging-inversion peculiarly in hilly area is the key factor to jet′s lasting.
