Determination of regional distributions and seasonal variations of land surface heat fluxes from Landsat-7 Enhanced Thematic Mapper data over the central Tibetan Plateau area

<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&#8217;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>

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Remote sensing parameterization of land surface heat fluxes over arid and semi-arid areas

Advances in Atmospheric Sciences ◽

10.1007/bf02915496 ◽

2003 ◽

Vol 20 (4) ◽

pp. 530-539 ◽

Cited By ~ 15

Author(s):

Ma Yaoming ◽

Wang Jiemin ◽

Huang Ronghui ◽

Wei Guoan ◽

Massimo Menenti ◽

...

Keyword(s):

Remote Sensing ◽

Land Surface ◽

Surface Heat ◽

Heat Fluxes ◽

Arid Areas ◽

Surface Heat Fluxes ◽

Semi Arid ◽

Land Surface Heat Fluxes

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Analysis of Land Surface Heat Fluxes Using the Orthonormal Wavelet Approach

Water Resources Research ◽

10.1029/95wr00003 ◽

1995 ◽

Vol 31 (11) ◽

pp. 2743-2749 ◽

Cited By ~ 49

Author(s):

Gabriel G. Katul ◽

Marc B. Parlange

Keyword(s):

Land Surface ◽

Surface Heat ◽

Heat Fluxes ◽

Orthonormal Wavelet ◽

Surface Heat Fluxes ◽

Land Surface Heat Fluxes

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Estimation of land surface heat fluxes based on visible infrared imaging radiometer suite data: case study in northern China

Journal of Applied Remote Sensing ◽

10.1117/1.jrs.11.046012 ◽

2017 ◽

Vol 11 (04) ◽

pp. 1 ◽

Cited By ~ 1

Author(s):

Xiaojun Li ◽

Xiaozhou Xin

Keyword(s):

Land Surface ◽

Infrared Imaging ◽

Northern China ◽

Surface Heat ◽

Heat Fluxes ◽

Surface Heat Fluxes ◽

Land Surface Heat Fluxes

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Determination of land surface heat fluxes over heterogeneous landscape of the Tibetan Plateau by using the MODIS and in-situ data

Atmospheric Chemistry and Physics Discussions ◽

10.5194/acpd-11-19617-2011 ◽

2011 ◽

Vol 11 (7) ◽

pp. 19617-19638 ◽

Cited By ~ 1

Author(s):

Y. Ma ◽

L. Zhong ◽

B. Wang ◽

W. Ma ◽

X. Chen ◽

...

Keyword(s):

Heat Flux ◽

Tibetan Plateau ◽

Land Surface ◽

Surface Heat ◽

Heat Fluxes ◽

The Tibetan Plateau ◽

Surface Heat Fluxes ◽

In Situ Data ◽

Plateau Area

Abstract. In this study, a parameterization methodology based on MODIS (Moderate Resolution Imaging Spectroradiometer) and in-situ data is proposed and tested for deriving the regional surface reflectance, surface temperature, net radiation flux, soil heat flux, sensible heat flux and latent heat flux over heterogeneous landscape. As a case study, the methodology was applied to the Tibetan Plateau area. Four images of MODIS data (30 January 2007, 15 April 2007, 1 August 2007 and 25 October 2007) were used in this study for the comparison among winter, spring, summer and autumn. The derived results were also validated by using the "ground truth" measured in the stations of the Tibetan Observation and Research Platform (TORP). The results show that the derived surface variables (surface reflectance and surface temperature) and surface heat fluxes (net radiation flux, soil heat flux, sensible heat flux and latent heat flux) in four different seasons over the Tibetan Plateau area are in good accordance with the land surface status. These parameters show a wide range due to the strong contrast of surface features over the Tibetan Plateau. Also, the estimated land surface variables and surface heat fluxes are in good agreement with the ground measurements, and all their absolute percent difference (APD) is less than 10 % in the validation sites. It is therefore concluded that the proposed methodology is successful for the retrieval of land surface variables and surface heat fluxes using the MODIS and in-situ data over the Tibetan Plateau area. The shortage and further improvement of the methodology were also discussed.

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Estimating surface fluxes over middle and upper streams of the Heihe River Basin with ASTER imagery

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-6-4619-2009 ◽

2009 ◽

Vol 6 (3) ◽

pp. 4619-4635 ◽

Cited By ~ 3

Author(s):

W. Ma ◽

Y. Ma ◽

Z. Hu ◽

B. Su ◽

J. Wang ◽

...

Keyword(s):

Heat Flux ◽

Land Surface ◽

Sensible Heat Flux ◽

Surface Heat ◽

Surface Fluxes ◽

Heat Fluxes ◽

Heihe River ◽

Surface Heat Fluxes ◽

Aster Data ◽

Land Surface Heat Fluxes

Abstract. Surface fluxes are important boundary conditions for climatological modeling and the Asian monsoon system. Recent availability of high-resolution, multi-band imagery from the ASTER (Advanced Space-borne Thermal Emission and Reflection Radiometer) sensor has enabled us to estimate surface fluxes to bridge the gap between local scale flux measurements using micrometeorological instruments and regional scale land-atmosphere exchanges of water and heat fluxes that are fundamental for the understanding of the water cycle in the Asian monsoon system. A Surface Energy Balance System (SEBS) method based on ASTER data and field observations has been proposed and tested for deriving net radiation flux (Rn), soil heat flux (G0), sensible heat flux (H) and latent heat flux (λ E) over heterogeneous land surface in this paper. As a case study, the methodology was applied to the experimental area of the WATER (Watershed Allied Telemetry Experimental Research), located at the mid-to-upstream sections of the Heihe River, northwest China. The ASTER data of 3 May and 4 June in 2008 was used in this paper for the case of mid-to-upstream sections of the Heihe River Basin. To validate the proposed methodology, the ground-measured land surface heat fluxes (net radiation flux (Rn), soil heat flux (G0), sensible heat flux (H) and latent heat flux (λ E)) were compared to the ASTER derived values. The results show that the derived surface variables and land surface heat fluxes in different months over the study area are in good accordance with the land surface status. It is therefore concluded that the proposed methodology is successful for the retrieval of land surface heat fluxes using the ASTER data and filed observation over the study area.

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