Lightchain measurements from radiation station 2020R21 ...

• Main Authors: Nicolaus, Marcel, Hoppmann, Mario, Tao, Ran, Katlein, Christian
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: autonomous platform; buoy; drift; light chain; snow depth; solar radiation; DATE/TIME; LATITUDE; LONGITUDE; Position; Irradiance, sideward, red channel; Irradiance, sideward, green channel; Irradiance, sideward, blue channel; Irradiance, sideward, clear channel; Quality flag, position; Radiation Station; Buoy, radiation station; PS122/5; Polarstern; Current sea ice maps for Arctic and Antarctic meereisportal.de; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Sea Ice Physics @ AWI AWI_SeaIce; Antarctic; Arctic; Arctic Ocean; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.948841; https://doi.pangaea.de/10.1594/PANGAEA.948841

Solar radiation over and under sea ice was measured by radiation station 2020R21, an autonomous platform, installed on a drifting melt pond in the Arctic Ocean during MOSAiC (Leg 5) 2019/20. The resulting time series describes radiation measurements as a function of place and time between 27 August 2020 and 14 November 2020 in sample intervals of 1 hour. The radiation measurements have been performed with spectral radiometers. All data are given in full spectral resolution interpolated to 1.0 nm, and integrated over the entire wavelength range (broadband, total: 320 to 950 nm). Two sensors, solar irradiance and upward reflected solar irradiance, were mounted on a on a platform about 1 m above the sea ice surface. The third sensor was mounted 0.5 m underneath the sea ice measuring the downward transmitted irradiance. Along with the radiation measurements, this autonomous platform consisted of a lightchain, which measured counts of red, green and blue light at 49 positions at hourly intervals. In addition, the ... : The data set has been processed and contains quality flags for different kinds for erroneous data. Flag values are the sum of individual error codes. The value of 0 refers to no error. Quality flag, position: The geographic position is flagged +1 if the drift velocity, as derived from the GPS longitude and latitude, exceeds a threshold of 10 deg latitude or 50 deg longitude per time step; +2 if the position exceeds extreme values, such as longitude > 360 deg; +4 if the position is exactly 0.0. ...