| 青藏高原晴空行星反照率与地面反照率关系的研究 |
| |
| 引用本文： | 祝昌汉,朱福康,刘玉洁.青藏高原晴空行星反照率与地面反照率关系的研究[J].气象学报,1993,51(1):57-65. |
| |
| 作者姓名： | 祝昌汉 朱福康 刘玉洁 |
| |
| 作者单位： | 中国气象科学研究院，中国气象科学研究院，国家气象局卫星气象中心 北京 100081，北京 100081 |
| |
| 摘 要： | 本文利用了大气-地球系统的物理模型推导了晴空行星反照率与地面反照率之间的相互关系,指出当仅考虑一次地面反射时,行星反照率是地面反照率的一次线性函数,当考虑到大气与地面的多次反射时,两者的关系设为二次抛物线函数,并利用1986年中美青藏高原联合考察期间的地面辐射资料以及同期NOAA-9的GAC资料对上述关系进行了试验,结果表明,两种关系都能较好地反映出青藏高原行星反照率与地面反照率之间的关系,但二次函数表现的物理意义更为明确。 青藏高原作为一个特殊的地理类型,其行星反照率与地面反照率的相互关系与全球纬向平均相比较也有明显的差异,本文讨论了这些差异的物理意义,同时分别讨论了该地区可见光和近红外这二个通道的滤过反照率与地面分光谱反照率之间的关系。 青藏高原晴空反照率与地面反照率关系的研究为利用AVHRR资料反演青藏高原地面反照率的数值分布图提供了理论依据和具体方法。
|
| 关 键 词： | 高原 反照率 GAC资料 |
| 收稿时间： | 1990/5/19 0:00:00 |
| 修稿时间： | 1990/10/27 0:00:00 |
ON THE RELATIONSHIP BETWEEN CLEAR-SKY PLANETARY AND SURFACE ALBEDOS OVER THE QINGHAI-XIZANG PLATEAU |
| |
| Zhu Changhan,Zhu Fukang and Liu Yujie.ON THE RELATIONSHIP BETWEEN CLEAR-SKY PLANETARY AND SURFACE ALBEDOS OVER THE QINGHAI-XIZANG PLATEAU[J].Acta Meteorologica Sinica,1993,51(1):57-65. |
| |
| Authors: | Zhu Changhan Zhu Fukang and Liu Yujie |
| |
| Affiliation: | Chinese Academy of Meteorological Sciences, Beijing 100081;Chinese Academy of Meteorological Sciences, Beijing 100081;Satellite Meteorology Center, State Meteorological Administration |
| |
| Abstract: | In this paper the relationship between clear-sky planetary and surface albedos is derived by the physical model of atmosphere-earth system. It is suggested that the planetary albedo is a linear function if the single ground reflection is considered,and is two power parabola function if the ground multi-reflection is considered. By use of the data of the TIPMEX-86(Tibetaa Plateau Meteorological Experiment-1986) and GAC(Global Area Coverage) data,the experiment was carried out in order to test the relationship. The result shows that two functions fit well into the relationship between clear-sky planetary and surface albedo over the Qinghai-Xizang plateau, but physical meaning of two power function is more clear-cut.As a special geographical type,there are also clear differences in the relationship between clear-sky planetary and surface albedos over the Qinghai -Xizang plateau from the zonal means over the global.The physical meanings of the differences are discussed, and the relationship between the spectral albedos of visible and near-infrared channels and the observational spectral albedos of ground over the plateau is analysed.In order to determine the surface albedo distribution over the Qinghai-Xizang Plateau region from NOAA-9 AVHRR data, the research for the relationship between clear-sky planetary and surface albedo will present the theory rests and the concrete method. |
| |
| Keywords: | Plateau Albedo GACdata |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《气象学报》浏览原始摘要信息 |
|
点击此处可从《气象学报》下载全文 |
|
