UV index forecastability issues

Craig S. Long; Alvin J. Miller

doi:10.1117/12.503832

4 November 2003 UV index forecastability issues

Craig S. Long, Alvin J. Miller

Proceedings Volume 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III; (2003) https://doi.org/10.1117/12.503832
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

As the art of forecasting the UV Index moves into its second decade, some issues affecting the creation of a valid UV Index forecast have been solved, yet others remain. The forecast of the UV Index is really the combination of multiple forecasts of ozone, clouds, and (in the future) aerosols. Ozone forecasts have improved significantly due to the assimilation of ozone into global numerical weather prediction models. The affects of aerosols on UV radiation are increasingly better understood. Parameterization of other factors affecting the UV radiation reaching the surface (albedo and elevation) have been increasingly studied and their affects better known. Clouds remain to be the primary source of error in UV Index forecasts. Each of these topics will be discussed with their impacts on the resulting UV Index forecast.

Citation Download Citation

Craig S. Long and Alvin J. Miller "UV index forecastability issues", Proc. SPIE 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III, (4 November 2003); https://doi.org/10.1117/12.503832

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KEYWORDS

Ultraviolet radiation

Clouds

Ozone

Atmospheric modeling

Aerosols

Error analysis

Multiple scattering

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