| LAS在西北半干旱地区的观测分析 |
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| 引用本文： | 黄山,张文煜,左洪超,刘欣,史永义. LAS在西北半干旱地区的观测分析[J]. 中国沙漠, 2011, 31(2): 525-528 |
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| 作者姓名： | 黄山 张文煜 左洪超 刘欣 史永义 |
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| 作者单位： | 1.兰州大学 大气科学学院 半干旱气候变化教育部重点实验室/甘肃省干旱气候变化与减灾重点实验室, 甘肃 兰州 730000; 2.山西省阳泉市气象局, 山西 阳泉 045100 |
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| 基金项目： | 甘肃省自然科学基金项目(0710RJZA040); 国家自然科学基金项目(40775017)共同资助 |
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| 摘 要： | 利用兰州大学半干旱气候与环境观测站2007年夏冬两季LAS观测数据,结合观测站气温、气压及同期的涡动相关仪30 min时间间隔的观测数据,计算分析了西北半干旱地区显热通量的变化特征,并将LAS所测结果与涡动相关仪的测量结果进行了对比分析。结果表明,在西北半干旱地区,夏季的显热通量值整体大于冬季,冬季显热通量的日变化峰值较夏季有明显的滞后性;在类似的天气状况下,夏季测得显热通量的波动要大于冬季;天气状况对LAS的观测结果有着很大的影响,在同一季节晴天显热通量较大,阴天较小;LAS测得显热通量H的值较涡动相关所得H值略微偏大,但LAS与涡动相关仪测得的显热通量有很好的符合性,夏季相关系数为0.95,冬季相关系数为0.98。
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| 关 键 词： | 显热通量 LAS 涡动相关仪 半干旱地 |
| 收稿时间： | 2010-06-29 |
| 修稿时间： | 2010-10-14 |
Large Aperture Scintillometers(LAS)Observation in Semi-arid Regions of Northwestern China |
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| HUANG Shan,ZHANG Wen-yu,ZUO Hong-chao,LIU Xin,SHI Yong-yi. Large Aperture Scintillometers(LAS)Observation in Semi-arid Regions of Northwestern China[J]. ournal of Desert Research, 2011, 31(2): 525-528 |
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| Authors: | HUANG Shan ZHANG Wen-yu ZUO Hong-chao LIU Xin SHI Yong-yi |
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| Affiliation: | 1.Ministry of Education Key Laboratory of Semi-Arid Climatic Changes, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China; 2.Yangquan Meteorological Bureau of Shanxi Province, Shanxi Yangquan 045100, China |
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| Abstract: | In this paper,sensible heat flux in semi-arid region of northwestern China were calculated and analyzed by use of the observation data of Large Aperture Scintillometers(LAS) recorded per 30 minutes,the temperature,pressure data,and the observation data by Eddy Covariance System at Lanzhou University Semi-arid Climate and Environment Observatory during summer and winter of 2007.The values of the sensible heat flux in summer were bigger than that in winter,and there was a lag of peak value on diurnal variatio... |
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| Keywords: | sensible heat flux LAS Eddy Covariance System semi-arid region of China |
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