[1]王丽娟,郭铌,杨扬.基于MODIS遥感资料估算高原地表潜热通量[J].水土保持研究,2017,24(03):119-124,129.
　WANG Lijuan,GUO Ni,YANG Yang.Surface Latent Heat Estimated by Remote Sensing Over the Tibetan Plateau[J].Research of Soil and Water Conservation,2017,24(03):119-124,129.
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基于MODIS遥感资料估算高原地表潜热通量

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年03期 页码: 119-124,129 栏目: 出版日期: 2017-06-28
Title:
Surface Latent Heat Estimated by Remote Sensing Over the Tibetan Plateau
作者:
王丽娟1,2, 郭铌1, 杨扬1
1. 中国气象局 兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局干旱气候变化与减灾重点实验室, 兰州 730020;
2. 中国气象局 成都高原气象研究所, 成都 610071
Author(s):
WANG Lijuan1,2, GUO Ni1, YANG Yang1
1. Gansu Key Laboratory of Arid Climatic Change and Reducing Disater/Key Laboratory of Arid Climatic Change and Disaster Reduction of CMA/Institute of Arid Meteorology, CMA, Lanzhou 730020, China;
2. Institute of Plateau Meteorology, CMA, Chengdu 610071, China
关键词:
青藏高原; 地表潜热; MODIS产品
Keywords:
Tibetan Plateau; latent heat flux; MODIS products
分类号:
P407.4
摘要:
利用2014年夏季青藏高原9个观测站的实测资料，首先分析了夏季高原地区的湍流输送特征，并对MODIS（Moderate-Resolution Imaging Spectroradiometer）地表潜热产品在高原地区的适用性进行检验，进一步在潜热模型中引入MODIS昼夜地表温度来估算研究区的地表潜热，并将估算值与实测值进行对比。结果表明：下垫面以裸土/稀疏植被为主的阿里站能量输送以感热为主，其他观测站的湍流输送则以潜热输送为主；MODIS潜热产品在高原各地区的适用性存在差异，产品在高原东部偏东地区适用性较好，其他地区适用性较差，且高原西部的潜热有效数据大量缺失；而新提出的方法不仅可以弥补高原西部地表潜热的缺失，还可以提高地表潜热的估算精度，估算值与实测值之间相关系数达到0.77，均方根误差仅为29.8 W/m2，相对误差为35.59%；模型给出的高原地区地表潜热区域分布特征与高原的地表覆盖类型吻合较好，说明模型给出的高原地表潜热分布是合理的。
Abstract:
Based on the measured data of 9 sites over Tibetan Plateau in the summer of 2014, the characteristics of turbulent transport were analyzed first, and the further accuracy of the MOD16 latent heat flux was validated. Based on the Moderate-Resolution Imaging Spectroradiometer (MODIS) day and night land surface temperature data, the model was used to estimate the latent heat flux. Compared the estimated result with the measured data, the result showed that the main turbulent transport way was sensible heat flux in the Ali area where the underlying surface was barren or sparse, and the main turbulent transport way of other sites was latent heat flux. The applicability of the MOD16 product was difference in Tibetan Plateau regions, and the accuracy of MOD16 latent heat flux product was good in the eastern plateau, but it was not satisfied with the research in the other regions, and the valid data of western plateau was missing mostly. The model used in this paper was could not only make up for the data lack of western plateau, and could also improve the estimation precision of latent heat flux over the Tibetan Plateau. Compared to the measured data, the correlation of estimated data and observed value was significant, and the correlation coefficient was 0.77, and the root mean square was only 29.8 W/m2, and the mean absolute percent error was 35.59%. The regional distribution characteristic of latent heat flux was consisted with the surface cover types, so that the estimated result of model was reasonable over the Tibetan plateau.

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备注/Memo

收稿日期:2016-05-03;改回日期:2016-06-16。
基金项目:公益性行业（气象）科研专项（重大专项）“中国干旱气象科学研究——我国北方干旱致灾过程及机理”（GYHY201506001-5）；中国气象局成都高原气象研究所高原气象开放基金课题“基于TESEBS模式估算青藏高原的地表能量通量”（LPM2014008）
作者简介:王丽娟(1986-),女,四川广安人,理学硕士,助理研究员,主要从事陆面及卫星遥感研究。E-mail:wanglijuan01@126.com
通讯作者:郭铌(1963-),女,新疆乌鲁木齐市人,学士,研究员,主要从事气候和卫星遥感研究。E-mail:guoni0531@126.com

更新日期/Last Update: 1900-01-01