Affiliation:
1. Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
Abstract
AbstractA simple directional pyrgeometer is tested and compared with a conventional standard pyrgeometer. The system presented in this article has a narrow directional response and points to the representative zenith angle of 52.5°. Because of its directional response, it can be used in a street canyon or in a forest provided that a small part of the sky is visible at the representative angle. The system can be assembled using inexpensive parts that are widely used in household appliances. As this system does not have a flat spectral sensitivity, a spectral correction method is also presented. The results show that the output of the new system agrees well with that from a conventional pyrgeometer (Kipp & Zonen CG3). The correlation coefficient is 0.995 and the standard deviation is 5.6 W m−2 for 1-h averaged values.
Publisher
American Meteorological Society
Subject
Atmospheric Science,Ocean Engineering
Reference9 articles.
1. Longwave radiation at the ground: III. A radiometer for the ‘representative angle.’.;Dalrymple;Quart. J. Roy. Meteor. Soc.,1978
2. Monthly mean values of radiation from various parts of the sky at Benon, Oxfordshire.;Dines;Mem. Roy. Meteor. Soc.,1927
3. Atmospheric Radiation: Theoretical Basis.;Goody,1989
4. Effect of nonuniform spectral dome transmittance on the accuracy of infrared radiation measurements using shielded pyrradiometers and pyrgeometers.;Miskolczi;Appl. Opt.,1993
5. Characterization of pyrgeometers and the accuracy of atmospheric long-wave radiation measurements.;Philipona;Appl. Opt.,1995
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献