This dataset consists of photosynthetically active radiation (PAR) recordings taken at the surface (BoulderPatch_surfacePAR.csv) and underwater (BoulderPatch_uwPAR.csv). The dataset spans from 1984 to 2016.
 
For surface readings, cosine PAR sensors (LI-192SA, LI-COR Inc.) were deployed with LI-COR dataloggers (LI-1000, LI-1400) to collect continuous surface light measurements at East Dock in Prudhoe Bay (1986-1987) and on Endeavor Island at Endicott (1987-2016). For underwater readings, spherical quantum sensors (LI-193SA, LI-COR Inc.) were placed ~0.5 m above the benthos at sites across the Boulder Patch alongside dataloggers deployed within watertight housings from 1984-2016. Measurements of PAR were made every minute and then integrated and averaged once every 1 or 3 hours, depending on site and study year. 
 
Both files include, date, time (AKDT), and PAR (umol m-1 s-1). The underwater file includes site (see BoulderPatchMap.pdf). 

 
All data are provided under the Creative Commons Attribution 4.0 United States (CC BY 4.0 US) license which states that the data are available for all to use provided that proper credit is given. To cite the dataset:
 
K. H. Dunton and C. Bonsell (2017). Photosynthetically active radiation of the Stefansson Sound Boulder Patch, Beaufort Sea, 1984-2016. Retrieved from http://arcticstudies.org/boulderpatch  [access date]