Wright, GYGriffith, D2016-02-232016-02-232015-09Wright, GY and Griffith, D. 2015. Solar UVR instrument inter-comparison focussing on measurement interval recording setting and solar zenith angle as important factors, South African Society for Atmospheric Sciences 31st annual conference: Applying the weather, Hennops River Valley, South Africa 21 to 22 September 2015http://hdl.handle.net/10204/8406South African Society for Atmospheric Sciences 31st annual conference: Applying the weather, Hennops River Valley, South Africa 21 to 22 September 2015Solar ultraviolet radiation (UVR) data for matching time periods between November 2014 and February 2015 were recorded by two instruments, namely a UVR biometer and a Davis UVR sensor, and their data were compared. Several checks and challenges were identified during the data preparation stage. The measurement interval of the biometer was changed from 30-minutes to 1 hour which prompted the recalculation of readings measured by the Davis UVR sensor for the periods affected. On average, the Davis UVR sensor slightly overestimated solar UVR levels when compared to the biometer data and this relationship was strongest for small solar zenith angles when the sun was high in the sky. Further research is necessary to investigate the influence of other external factors that may influence the differences in the two instruments solar UVR measurements, such as instrument hardware in the form of fins on the Davis UVR sensor housing.enSolar ultraviolet radiationInstrumentsInter-comparisonPretoriaConference PresentationWright, G., & Griffith, D. (2015). Solar UVR instrument inter-comparison focussing on measurement interval recording setting and solar zenith angle as important factors. South African Society for Atmospheric Sciences. http://hdl.handle.net/10204/8406Wright, GY, and D Griffith. "Solar UVR instrument inter-comparison focussing on measurement interval recording setting and solar zenith angle as important factors." (2015): http://hdl.handle.net/10204/8406Wright G, Griffith D, Solar UVR instrument inter-comparison focussing on measurement interval recording setting and solar zenith angle as important factors; South African Society for Atmospheric Sciences; 2015. http://hdl.handle.net/10204/8406 .TY - Conference Presentation AU - Wright, GY AU - Griffith, D AB - Solar ultraviolet radiation (UVR) data for matching time periods between November 2014 and February 2015 were recorded by two instruments, namely a UVR biometer and a Davis UVR sensor, and their data were compared. Several checks and challenges were identified during the data preparation stage. The measurement interval of the biometer was changed from 30-minutes to 1 hour which prompted the recalculation of readings measured by the Davis UVR sensor for the periods affected. On average, the Davis UVR sensor slightly overestimated solar UVR levels when compared to the biometer data and this relationship was strongest for small solar zenith angles when the sun was high in the sky. Further research is necessary to investigate the influence of other external factors that may influence the differences in the two instruments solar UVR measurements, such as instrument hardware in the form of fins on the Davis UVR sensor housing. DA - 2015-09 DB - ResearchSpace DP - CSIR KW - Solar ultraviolet radiation KW - Instruments KW - Inter-comparison KW - Pretoria LK - https://researchspace.csir.co.za PY - 2015 T1 - Solar UVR instrument inter-comparison focussing on measurement interval recording setting and solar zenith angle as important factors TI - Solar UVR instrument inter-comparison focussing on measurement interval recording setting and solar zenith angle as important factors UR - http://hdl.handle.net/10204/8406 ER -