TY - GEN
T1 - Importance of time averaging conventions
AU - Perez-Astudillo, Daniel
AU - Bachour, Dunia
N1 - Publisher Copyright:
© 2019. The Authors. Published by International Solar Energy Society Selection and/or peer review under responsibility of Scientific Committee
PY - 2020
Y1 - 2020
N2 - Original or raw solar radiation data is preferably created at relatively high temporal resolutions, such as one-minute values for direct measurements. However, and especially when combining different sources or with different kinds of data, the data actually seen by end users is frequently already averaged at some other temporal resolution, commonly 15-, 30- or 60-minute averages. One also commonly missing piece of information is how those averages were obtained; in particular, what the timestamps actually mean; for example, does the hourly value marked as 10 am include 9:01 to 10:00, or 10:00 to 10:50, or something else? This study presents an estimation of errors, using real measurements, resulting from a user assigning the 'wrong' interval to the timestamps, at different averaging scales, from 5 to 60 minutes.
AB - Original or raw solar radiation data is preferably created at relatively high temporal resolutions, such as one-minute values for direct measurements. However, and especially when combining different sources or with different kinds of data, the data actually seen by end users is frequently already averaged at some other temporal resolution, commonly 15-, 30- or 60-minute averages. One also commonly missing piece of information is how those averages were obtained; in particular, what the timestamps actually mean; for example, does the hourly value marked as 10 am include 9:01 to 10:00, or 10:00 to 10:50, or something else? This study presents an estimation of errors, using real measurements, resulting from a user assigning the 'wrong' interval to the timestamps, at different averaging scales, from 5 to 60 minutes.
KW - Solar data aggregation
KW - Solar resources
KW - Temporal resolution
UR - https://www.scopus.com/pages/publications/85086829781
U2 - 10.18086/swc.2019.42.07
DO - 10.18086/swc.2019.42.07
M3 - Conference contribution
AN - SCOPUS:85086829781
T3 - Proceedings of the ISES Solar World Congress 2019 and IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019
SP - 1996
EP - 2000
BT - Proceedings of the ISES Solar World Congress 2019 and IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019
A2 - Cardemil, Jose Miguel
A2 - Guthrie, Ken
A2 - Ruther, Ricardo
PB - International Solar Energy Society
T2 - ISES Solar World Congress 2019, SWC 2019 and IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019, SHC 2019
Y2 - 4 November 2019 through 7 November 2019
ER -