Shortwave clear-sky diffuse irradiance in the 300- to 1100-nm range: comparison of models with UV-VIS-NIR and broadband radiometer measurements at the Southern Great Plains ARM site in September/October 2001

Joseph J. Michalsky; Piotr W. Kiedron; Qi-Long Min; Lee C. Harrison

doi:10.1117/12.504839

4 November 2003 Shortwave clear-sky diffuse irradiance in the 300- to 1100-nm range: comparison of models with UV-VIS-NIR and broadband radiometer measurements at the Southern Great Plains ARM site in September/October 2001

Joseph J. Michalsky, Piotr W. Kiedron, Qi-Long Min, Lee C. Harrison

Author Affiliations +

Proceedings Volume 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III; (2003) https://doi.org/10.1117/12.504839
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Broadband shortwave diffuse horizontal irradiance models overestimate measurements by between 7 and 14% using the most reliable input data for the models and the best available broadband measurements of diffuse irradiance. This paper uses spectral irradiance measurements and models as opposed to broadband measurements and models to investigate the contributions to this difference from various regions of the spectrum. The data are from the first Atmospheric Radiation Measurement (ARM) diffuse irradiance intensive observation period (IOP) held in September and October of 2001 at the Oklahoma ARM site near Ponca City. Visible and ultraviolet (UV) rotating shadowband spectroradiometers (RSS) acquired data during the IOP. Diffuse measurements with conventional broadband diffuse pyranometers and direct irradiance measurements using an absolute cavity radiometer are also available for analysis. Integrated spectral measurements are consistent with broadband measurements and, therefore, confirm the earlier results that models over predict diffuse. The wavelength dependent differences in models and measurements are illustrated and discussed.

Citation Download Citation

Joseph J. Michalsky, Piotr W. Kiedron, Qi-Long Min, and Lee C. Harrison "Shortwave clear-sky diffuse irradiance in the 300- to 1100-nm range: comparison of models with UV-VIS-NIR and broadband radiometer measurements at the Southern Great Plains ARM site in September/October 2001", Proc. SPIE 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III, (4 November 2003); https://doi.org/10.1117/12.504839

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available