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| Titel |
Development of a 10-year (2001–2010) 0.1° data set of land-surface energy balance for mainland China |
| VerfasserIn |
X. Chen, Z. Su, Y. Ma, S. Liu, Q. Yu, Z. Xu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 23 ; Nr. 14, no. 23 (2014-12-10), S.13097-13117 |
| Datensatznummer |
250119227
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| Publikation (Nr.) |
 copernicus.org/acp-14-13097-2014.pdf |
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| Zusammenfassung |
| In the absence of high-resolution estimates of the components of surface
energy balance for China, we developed an algorithm based on the surface
energy balance system (SEBS) to generate a data set of land-surface energy
and water fluxes on a monthly timescale from 2001 to 2010 at a
0.1 × 0.1° spatial resolution by using multi-satellite and
meteorological forcing data. A remote-sensing-based method was developed to
estimate canopy height, which was used to calculate roughness length and flux
dynamics. The land-surface flux data set was validated against
"ground-truth" observations from 11 flux tower stations in China. The
estimated fluxes correlate well with the stations' measurements for different
vegetation types and climatic conditions (average bias = 11.2 Wm−2,
RMSE = 22.7 Wm−2). The quality of the data product was also assessed
against the GLDAS data set. The results show that our method is efficient for
producing a high-resolution data set of surface energy flux for the Chinese
landmass from satellite data. The validation results demonstrate that more
accurate downward long-wave radiation data sets are needed to be able to
estimate turbulent fluxes and evapotranspiration accurately when using the
surface energy balance model. Trend analysis of land-surface radiation and
energy exchange fluxes revealed that the Tibetan Plateau has undergone
relatively stronger climatic change than other parts of China during the last
10 years. The capability of the data set to provide spatial and temporal
information on water-cycle and land–atmosphere interactions for the Chinese
landmass is examined. The product is free to download for studies of the
water cycle and environmental change in China. |
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