Measurements of Temperature-gradient and Sensible Heat Flux by Optical Method in Remote Areas

被引：0

作者：

Tian Yong-zhi ^{[1
]}

Liu Jian-guo ^{[1
]}

Zeng Zong-yong ^{[1
]}

Tian Lin ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Environm Opt &Technol, Anhui Inst Opt & Fine Mech, Hefei, Peoples R China

来源：

EPLWW3S 2011: 2011 INTERNATIONAL CONFERENCE ON ECOLOGICAL PROTECTION OF LAKES-WETLANDS-WATERSHED AND APPLICATION OF 3S TECHNOLOGY, VOL 2 | 2011年

关键词：

Atmospheric remote sensing; sensible heat flux; temperature-gradient; LAS;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A new optical method for continuous field measurement of temperature-gradient and sensible heat flux is described and field results are presented. Temperature-gradient is calculated from the vertical shifts of the images position recorded by a CCD camera. The Large Aperture Scintillometer(LAS) simultaneously measures the structure parameter of the refractive index of air. Using temperature-gradient, the structure parameter of the refractive index of air and Monin-Obukhov Similarity Theory, sensible heat flux can be derived without wind speed. The performance of the optical system was investigated using data gathered during the FENGQIU experiment. The results showed this optical method is entirely possible to measure temperature gradient and sensible heat flux. The new method will expand application of LAS in the particular filed.

引用

页码：438 / 441

页数：4