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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yordanov, G.H. Saetre, T.O. Midtgard, O.-M. |
| Copyright Year | 2013 |
| Description | Author affiliation: Univ. of Agder (UiA), Grimstad, Norway (Yordanov, G.H.; Saetre, T.O.) || Norwegian Univ. of Sci. & Technol. (NTNU), Trondheim, Norway (Midtgard, O.-M.) |
| Abstract | Enhancement of sunlight by clouds can lead to irradiance peaks much exceeding the extraterrestrial levels - close to 2 suns near the Equator and at least 1.5 suns at latitudes of about 60°. Some extreme overirradiance events can last many minutes, but durations in the order of 1 second are also possible. The present paper reports the shortest bursts recorded in Southern Norway in the years 2012 and 2013. Our records of 10-millisecond resolution from 2012 show that the optimal instantaneous irradiance sampling interval is less than 0.15 s at the present test site, while the optimal averaging time is less than 0.13 s. We propose simple equations for deriving these times in an arbitrary geographical location from data recorded with very fine temporal resolution. The small values in the present coastal site are attributed to rather high cloud speeds. |
| Sponsorship | IEEE Electron Devices Soc. |
| Starting Page | 0985 |
| Ending Page | 0988 |
| File Size | 798249 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/PVSC.2013.6744306 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Clouds Sensors Transient analysis Solar energy Extraterrestrial measurements Photovoltaic systems cloud enhancement solar energy overirradiance instrumentation and measurement atmosphere |
| Content Type | Text |
| Resource Type | Article |
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