%0 Journal Article
%T Study on the uncertainties of methods and precision of net radiation flux measurement<br>净辐射通量观测方法及观测精度的不确定性研究
%A SUN Xiao-Min
%A ZHU Zhi-Lin
%A ZHANG Ren-Hu
%A WANG Geng-Chen
%A LIU Guang-Ren
%A <br>孙晓敏
%A 朱治林
%A 张仁华
%A 王庚辰
%A 刘广仁
%J 中国生态农业学报
%D 2001
%I 
%X More and more scientists are conscious of the uncertainties of net radiation flux measurements.It has relation not only to the measuring method,but also to the calibrating and maintaining methods of radiometers,especially long-wave radiometer.In this paper,two common measuring methods,which are net pyrradiometer measurement (NPM) and 4-way component system measurement (4CSM) were used to contrast in the fields.The results show that there are uncertainties in error between two measurements,and its precision changes with time and weather condition.Temperature change and unconsistency of windshield penetrant light spectrum of pyrradiometer are reasons on uncertainty of pyrradiometer.
%K Net radiation flux
%K Measurement in field
%K Uncertainty<br>净辐射通量
%K 太阳辐射
%K 不确定性
%K 观测方法
%K 观测精度
%K 净辐射表
%K 回路法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=FA8A1B159BD44224&yid=14E7EF987E4155E6&vid=9CF7A0430CBB2DFD&iid=CA4FD0336C81A37A&sid=286FB2D22CF8D013&eid=318E4CC20AED4940&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=1&reference_num=9