Geographical differences in erythemally-weighted UV measured at mid-latitude USDA sites

Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology
Richard McKenzieKathleen Lantz

Abstract

UV measurements from instruments maintained by USDA at 16 mid-latitude sites were analysed to investigate geographic differences. Fifteen of the sites are in North America, and one is in New Zealand. The instruments measure erythemally weighted UV radiation, and the results are presented in terms of UV Index (UVI). The focus of this work is on data from 2003, but the main results are also shown for years 2002 and 2004. In the North American sites, the peak UVI values increase by approximately 15% between latitudes 47 degrees N and 40 degrees N, and they show an increase with altitude of approximately 15% in the first kilometer, but much smaller rates of increase above that level. Peak UV intensities in the New Zealand site (45 degrees S, alt. 0.37 km) exceed those at comparable latitudes and altitudes in North America by 41 +/- 5%, and are more comparable with those over 1 km higher and 5 degrees closer to the equator. The number of observations on these days that exceeded various thresholds of UVI showed similar patterns. Furthermore, the number of days in which the peak values exceeded various thresholds also showed similar patterns, with the number of extreme values in New Zealand being anomalously high. For example, the onl...Continue Reading

Citations

Aug 9, 2008·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Gunther SeckmeyerUwe Feister
Aug 22, 2012·Health Education Research·Anthony I ReederAndrew Gray
Nov 22, 2007·Photochemistry and Photobiology·Donat-Peter HäderRichard McKenzie
Sep 24, 2015·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Di LiuQiu-Hong Pan
Mar 5, 2016·Scientific Reports·R R CorderoD Laroze
Jul 19, 2013·International Journal of Cosmetic Science·K v q Lu'o'ng, L T H Nguyễn
Apr 18, 2014·Plant, Cell & Environment·Linlin LiuBrian Jordan
Oct 28, 2014·Frontiers in Plant Science·Laura ZorattiLaura Jaakola
Mar 9, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·R L McKenzieM Ilyas
Jul 7, 2018·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Sasha MadronichRichard L McKenzie
Jun 6, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Jonathan S WatsonDavid J Beerling
Mar 14, 2012·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Richard McKenzieRoshani Prematunga
Aug 5, 2017·International Journal of Sport Nutrition and Exercise Metabolism·Kirsty A FairbairnTracy L Perry
Nov 10, 2013·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Raul R CorderoDavid Laroze
Apr 2, 2018·Antonie van Leeuwenhoek·R R CorderoF Labbe
Apr 2, 2011·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Paul A Newman, Richard McKenzie
Feb 18, 2020·International Journal of Cancer. Journal International Du Cancer·Farhad IslamiAhmedin Jemal
Mar 1, 2021·Journal of the American Academy of Dermatology·Amaris N GeislerHenry W Lim
Mar 30, 2017··Richard McKenzieMichael Kotkamp
Mar 30, 2017··Richard McKenzieBen Liley

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