Assessing the Performance of Domestic Optical Large Aperture Scintillometer under Different Environment Conditions

LI Huaixiang; LIU Shaomin; SHI Shengjin; XU Ziwei; ZHU Zhongli

doi:10.7522/j.issn.1000-0534.2016.00035

Plateau Meteorology >

2017 , Vol. 36 >Issue 2: 575 - 585

DOI: https://doi.org/10.7522/j.issn.1000-0534.2016.00035

Assessing the Performance of Domestic Optical Large Aperture Scintillometer under Different Environment Conditions

LI Huaixiang ,
LIU Shaomin ,
SHI Shengjin ,
XU Ziwei ,
ZHU Zhongli

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State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resource, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China

Received date: 2015-06-19

Online published: 2017-04-28

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Abstract

The accuracy, stability and consistency of domestic optical large aperture scintillometers (YZLAS) were assessed using the observation experiments located in Miyun, A'rou, Jiyuan, Zhangye, Guantao and Guyuan in China during 2009 to 2012.The results can provide a potential scientific basis to improve and produce the subsequent domestic optical large aperture scintillometer. The results showed that: (1) Taken BLS900 scintillometer as the reference, the domestic large aperture scintillometer derived very similar sensible heat fluxes with the reference, with the averaged RMSE of 19.91 W·m^-2 and 9.81 W·m^-2, respectively at Zhangye Baji site (three YZLAS sets) and Guyuan site (five YZLAS sets). The RMSE of YZLAS sets were 21.08 W·m^-2and 12.87 W·m^-2, respectively, when compared with the measurements from eddy covariance system. These comparisons indicated that the domestic large aperture scintillometer performed very well; (2) The domestic large aperture scintillometer also has reliable stability under harsh environments such as high and low temperature, high and low humidity conditions; (3) The sensible heat fluxes measured by YZLAS also showed good consistency with each other with diversity of about 6% and the correlation coefficient greater than 0.98.These mean that the domestic optical large aperture scintillometer basically reached the level of the foreign instrument.

Key words： Domestic optical lar; Accuracy; Stability; Consistency

Cite this article

LI Huaixiang , LIU Shaomin , SHI Shengjin , XU Ziwei , ZHU Zhongli . Assessing the Performance of Domestic Optical Large Aperture Scintillometer under Different Environment Conditions[J]. Plateau Meteorology, 2017 , 36(2) : 575 -585 . DOI: 10.7522/j.issn.1000-0534.2016.00035

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