Time series (2017) of irradiance in the PAR (photosynthetically active radiation) region measured under the dome of a light observatory in the Arctic (Ny-�lesund, Svalbard, Norway) derived from SLR camera
Arctic ABC Development, Deep Impact, Centre for Autonomous Marine Operations and Systems, NFR grant 245929, NFR project no 300333, NFR project no 223254
Datacenter: Norwegain Infrastructure for Research Data (NIRD)
UiT The Arctic University of Norway (UiT) and the Norwegian University of Science and Technology (NTNU) established a light observatory at Kings Bay, Ny-�lesund (Svalbard, Norway) in January 2017. The observatory consists of a range of light sensors including an all sky camera. It is located outside the settlement of Ny-�lesund, approximately 1 km N-NW of the airport towards Brandalspynten. The array of sensors, including the camera, is mounted on a tripod under a transparent dome. This dataset contains the E(PAR) data derived from pictures taken during 2017 at hourly intervals by the all-sky-camera. The camera (Canon EOS 5D Mark III) is equipped with a fish-eye lens with a focal length set to 8 mm with aperture manually set to open (f/4) to ensure maximum sensitivity (Canon EF 8-15mm f/4L), providing a 180� image of the atmosphere (only possible with a full-size sensor). Both shutter speed (exposure time, ranging from 0.000125 to 30 seconds) and ISO (sensitivity, ranging from 100 at Midnight Sun period and up to 6400 during Polar Night) are set to auto. White balance manually set to �day light�. It is remotely controlled by a PC, pictures were stored in a cloud storage. Short gaps in the time series are due to power failures. In this dataset there is one larger gap: 2017-01-19 to 2017-01-21 caused by a crash of the controlling PC which was not monitored at that time. The equations for the picture-to-E(PAR) conversion can be found in: Johnsen et al 2021, An all-sky camera system providing high temporal resolution annual time-series of irradiance in the Arctic, Applied Optics. The pictures on which this dataset is based on can be found at http://dx.doi.org/10.11582/2021.00028. For re-use of the data, please refer to the dataset and the original publication.
Metadata update history
2022-11-15T16:30:23Z : Major modification : Add namespace no.met.adc to identifier and update parent id
2022-09-28T19:08:00Z : Minor modification : Restructure sequence, add CFSTD keyword, iso_topic_category and xml:lang
2021-04-30T02:00:00Z : Created : MMD record created from the NetCDF file
2022-07-16T14:02:26Z : Major modification : Added license to dataset.
Name: Jorgen Berge, Stephen Grant, Rune Bjorgum, Jonathan Cohen, David McKee, Geir Johnsen, Artur Zolich
Organisation: UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway