Evaluation of a Two-Source Energy Balance Model for Estimating Regional Land Surface Heat Fluxes During the HiWATER-MUSOEXE

Author(s):  
Yongmin Yang ◽  
Shifeng Huang ◽  
Jingfeng Xin ◽  
Jianwei Ma ◽  
He Zhu ◽  
...  
2010 ◽  
Vol 14 (3) ◽  
pp. 491-504 ◽  
Author(s):  
X. Xin ◽  
Q. Liu

Abstract. A Two-layer Surface Energy Balance Parameterization Scheme (TSEBPS) is proposed for the estimation of surface heat fluxes using Thermal Infrared (TIR) data over sparsely vegetated surfaces. TSEBPS is based on the theory of the classical two-layer energy balance model, as well as a set of new formulations derived from assumption of the energy balance at limiting cases. Two experimental data sets are used to assess the reliabilities of TSEBPS. Based on these case studies, TSEBPS has proven to be capable of estimating heat fluxes at vegetation surfaces with acceptable accuracy. The uncertainties in the estimated heat fluxes are comparable to in-situ measurement uncertainties.


2009 ◽  
Vol 6 (6) ◽  
pp. 6795-6832
Author(s):  
X. Xin ◽  
Q. Liu

Abstract. A Two-layer Surface Energy Balance Parameterization Scheme (TSEBPS) is proposed for the estimation of surface heat fluxes using thermal infrared (TIR) data over sparsely vegetated surfaces. TSEBPS is based on the theory of the classical two-layer energy balance model, as well as a set of new formulations derived from assumption of the energy balance at limiting cases. Two experimental data sets are used to assess the reliabilities of TSEBPS. Based on these case studies, TSEBPS has proven to be capable of estimating heat fluxes at vegetation surfaces with acceptable accuracy. The uncertainties in the estimated heat fluxes are comparable to in-situ measurement uncertainties.


2018 ◽  
Author(s):  
Lei Zhong ◽  
Yaoming Ma ◽  
Zeyong Hu ◽  
Yunfei Fu ◽  
Yuanyuan Hu ◽  
...  

Abstract. The estimation of land surface heat fluxes has significant meaning for energy and water cycle studies, especially for the Tibetan Plateau (TP), which has unique topography and strong land–atmosphere interactions. The land surface heating status also directly influences the movement of atmospheric circulation. However, for a long time, plateau-scale land surface heat flux information with high temporal resolution has been lacking, which greatly limits understanding of diurnal variations in land–atmosphere interactions. Based on geostationary and polar orbiting satellite data, a surface energy balance system (SEBS) was used in this paper to derive hourly land surface heat fluxes with a spatial resolution of 10 km. Six stations scattered through the TP and equipped for flux tower measurements were used to correct the energy imbalance problem existing in the measurements and to perform cross-validation. The results showed good agreement between derived fluxes and in situ measurements through 3738 validation samples. The RMSEs for net radiation flux, sensible heat flux, latent heat flux and soil heat flux were 76.63 W m−2, 60.29 W m−2, 64.65 W m−2 and 37.5 W m−2, respectively. The derived results were also found to be superior to GLDAS flux products (RMSEs for the surface energy balance components were 114.32 W m−2, 67.77 W m−2, 75.6 W m−2 and 40.05 W m−2, respectively). The diurnal and seasonal cycles of land surface energy balance components were clearly identified. Their spatial distribution was found to be consistent with the heterogeneous land surface status and general hydrometeorological conditions of the TP.


2007 ◽  
Vol 21 (14) ◽  
pp. 1892-1900 ◽  
Author(s):  
Yaoming Ma ◽  
Hui Tian ◽  
Hirohiko Ishikawa ◽  
Ryohji Ohba ◽  
Hiromasa Ueda ◽  
...  

2019 ◽  
Vol 19 (8) ◽  
pp. 5529-5541 ◽  
Author(s):  
Lei Zhong ◽  
Yaoming Ma ◽  
Zeyong Hu ◽  
Yunfei Fu ◽  
Yuanyuan Hu ◽  
...  

Abstract. Estimation of land surface heat fluxes is important for energy and water cycle studies, especially on the Tibetan Plateau (TP), where the topography is unique and the land–atmosphere interactions are strong. The land surface heating conditions also directly influence the movement of atmospheric circulation. However, high-temporal-resolution information on the plateau-scale land surface heat fluxes has been lacking for a long time, which significantly limits the understanding of diurnal variations in land–atmosphere interactions. Based on geostationary and polar-orbiting satellite data, the surface energy balance system (SEBS) was used in this paper to derive hourly land surface heat fluxes at a spatial resolution of 10 km. Six stations scattered throughout the TP and equipped for flux tower measurements were used to perform a cross-validation. The results showed good agreement between the derived fluxes and in situ measurements through 3738 validation samples. The root-mean-square errors (RMSEs) for net radiation flux, sensible heat flux, latent heat flux and soil heat flux were 76.63, 60.29, 71.03 and 37.5 W m−2, respectively; the derived results were also found to be superior to the Global Land Data Assimilation System (GLDAS) flux products (with RMSEs for the surface energy balance components of 114.32, 67.77, 75.6 and 40.05 W m−2, respectively). The diurnal and seasonal cycles of the land surface energy balance components were clearly identified, and their spatial distribution was found to be consistent with the heterogeneous land surface conditions and the general hydrometeorological conditions of the TP.


2004 ◽  
Vol 57 (2) ◽  
pp. 257-273 ◽  
Author(s):  
Yao-ming Ma ◽  
Massimo Menenti ◽  
Osamu Tsukamoto ◽  
Hirohiko Ishikawa ◽  
Jie-min Wang ◽  
...  

2017 ◽  
Vol 37 (14) ◽  
pp. 4757-4767 ◽  
Author(s):  
Cunbo Han ◽  
Yaoming Ma ◽  
Xuelong Chen ◽  
Zhongbo Su

2020 ◽  
Author(s):  
Yaoming Ma

<p>The exchange of heat and water vapor between land surface and atmosphere over the Third Pole region (Tibetan Plateau and nearby surrounding region) plays an important role in Asian monsoon, westerlies and the northern hemisphere weather and climate systems. Supported by various agencies in the People’s Republic of China, a Third Pole Environment (TPE) observation and research Platform (TPEORP) is now implementing over the Third Pole region. The background of the establishment of the TPEORP, the establishing and monitoring plan of long-term scale (5-10 years) of it will be shown firstly. Then the preliminary observational analysis results, such as the characteristics of land surface energy fluxes partitioning and the turbulent characteristics will also been shown in this study. Then, the parameterization methodology based on satellite data and the atmospheric boundary layer (ABL) observations has been proposed and tested for deriving regional distribution of net radiation flux, soil heat flux, sensible heat flux and latent heat flux (evapotranspiration (ET)) and their variation trends over the heterogeneous landscape of the Tibetan Plateau (TP) area. To validate the proposed methodology, the ground measured net radiation flux, soil heat flux, sensible heat flux and latent heat flux of the TPEORP are compared to the derived values. The results showed that the derived land surface heat fluxes over the study areas are in good accordance with the land surface status. These parameters show a wide range due to the strong contrast of surface feature. And the estimated land surface heat fluxes are in good agreement with ground measurements, and all the absolute percent difference in less than 10% in the validation sites. The sensible heat flux has increased slightly and the latent heat flux has decreased from 2001 to 2016 over the TP. It is therefore conclude that the proposed methodology is successful for the retrieval of land surface heat fluxes and ET over heterogeneous landscape of the TP area. Further improvement of the methodology and its applying field over the whole Third Pole region and Pan-Third Pole region were also discussed.</p>


2003 ◽  
Vol 20 (4) ◽  
pp. 530-539 ◽  
Author(s):  
Ma Yaoming ◽  
Wang Jiemin ◽  
Huang Ronghui ◽  
Wei Guoan ◽  
Massimo Menenti ◽  
...  

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