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Citation:

Sensitivity Analysis for Sensible Heat Flux from a Mixed Plantation Using LAS Measurements in Hilly Zone of North China

  • Received Date: 2011-11-26
  • Based on the LAS data from May to September and MOST in the BLS, the sensible heat flux (H) of a 30-year-old mixed plantation in the hilly zone of the North China in 2009 was calculated. The sensitivity effects of Bowen ratio (β), zero-plane displacement height (d), beam height (ZLAS), wind speed (v) and air temperature (Ta) were analyzed. The results showed that under arid and semi-arid atmosphere conditions in the study area, β was a less sensitive factor in the rang 0.4 4.0; when ZLAS fluctuated by 20%, the difference between estimated value and reference value of H was 35%; when d fluctuated by 50%, the difference was 1%; when Ta fluctuated by 10%, the difference was 0.2%; when v fluctuated by 20%, the difference was 10%.
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Sensitivity Analysis for Sensible Heat Flux from a Mixed Plantation Using LAS Measurements in Hilly Zone of North China

  • 1. Research Institute of Forestry, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Chinese Academy of Forestry, Beijing 100091, China

Abstract: Based on the LAS data from May to September and MOST in the BLS, the sensible heat flux (H) of a 30-year-old mixed plantation in the hilly zone of the North China in 2009 was calculated. The sensitivity effects of Bowen ratio (β), zero-plane displacement height (d), beam height (ZLAS), wind speed (v) and air temperature (Ta) were analyzed. The results showed that under arid and semi-arid atmosphere conditions in the study area, β was a less sensitive factor in the rang 0.4 4.0; when ZLAS fluctuated by 20%, the difference between estimated value and reference value of H was 35%; when d fluctuated by 50%, the difference was 1%; when Ta fluctuated by 10%, the difference was 0.2%; when v fluctuated by 20%, the difference was 10%.

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