| 敦煌绿洲-戈壁过渡带地表辐射与能量特征分析 |
| |
| 引用本文： | WANG Sheng,ZHANG Qiang,卫国安.敦煌绿洲-戈壁过渡带地表辐射与能量特征分析[J].高原气象,2005,24(4):556-562. |
| |
| 作者姓名： | WANG Sheng ZHANG Qiang 卫国安 |
| |
| 作者单位： | 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
| |
| 基金项目： | 国家自然科学基金项目（40233035）;国家科技部社会公益研究项目（2004DIB5J192）;中国气象局兰州干旱气象研究所干旱基金项目共同资助 |
| |
| 摘 要： | 利用"西北干旱区陆-气相互作用野外观测试验"2002年在敦煌加强期的资料, 分析了敦煌绿洲-戈壁过渡带的地表辐射和能量特征.研究表明 白天, 绿洲-戈壁过渡带的地表温度和近地层大气温度很高, 和戈壁的地表温度接近;在多数晴天夜晚, 绿洲-戈壁过渡带的地表温度和近地层大气温度要低于戈壁的值.总辐射, 反射辐射和地表长波辐射的值都很接近荒漠戈壁的值, 日积分通量分别为24.48, 6.1, 41.42 MJ*m+-2*d.绿洲-戈壁过渡带的感热、潜热和地表热通量的日积分值分别为6.58, 1.60和0.38 MJ*m+-2*d.同时, 在绿洲-戈壁过渡带有较强的水平湍流输送.
|
| 关 键 词： | 稀疏植被 绿洲-戈壁过渡带 地表辐射 地表能量 |
| 文章编号： | 1000-0534（2005）04-0556-07 |
| 收稿时间： | 2004-12-23 |
| 修稿时间： | 2004年12月23 |
Analyses on Characters of Surface Radiation and Energy at Oasis-Desert Transition Zone in Dunhuang |
| |
| WANG Sheng,ZHANG Qiang,WEI Guo-an.Analyses on Characters of Surface Radiation and Energy at Oasis-Desert Transition Zone in Dunhuang[J].Plateau Meteorology,2005,24(4):556-562. |
| |
| Authors: | WANG Sheng ZHANG Qiang WEI Guo-an |
| |
| Institution: | WANG Sheng~ |
| |
| Abstract: | Using the data of land-atmosphere interaction over arid region in Intensive Observation Experiment Period in Dunhuang, Gansu Province in 2002, the characters of surface radiation and energy at the oasis-desert transition zone analyzed. The results show that the surface temperature and ground layer temperature at the oasis-desert transition zone are close to that of at Gobi at daytime. But nighttime of most of clear days, the oasis-desert transition zone is a cold source relative to the Gobi. The values of global radiation, upward shortwave radiation and upward longwave radiation at the oasis-desert transition zone are close to the values of the Gobi and the daily integral values are 24.48, 6.1, 41.42 MJm~\{-2\}d, respectively. The daily integral values of sensible heat flux, latent heat flux and ground surface heat flux are 6.58, 1.60 and 0.38 MJm~\{-2\}d, respectively. The quite large horizontal sensible heat flux may means the unbalance energy is quite large at the oasis-desert transition zone. |
| |
| Keywords: | Sparse vegetation Oasis-desert transition Surface radiation Surface energy |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
