Reflected irradiance at the sea surface from radiation station 2020R12 ...

• Main Authors: Nicolaus, Marcel, Anhaus, Philipp, Hoppmann, Mario, Tao, Ran, Katlein, Christian
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: autonomous platform; buoy; drift; lightchain; snow depth; solar radiation; DATE/TIME; LATITUDE; LONGITUDE; Irradiance, upward, reflected at sea ice surface; Irradiance, upward, reflected at sea ice surface, photosythetically active; Irradiance, upward, reflected at sea ice surface, photosythetically active, absolute; Quality flag, sun elevation; Spectral irradiance, upward, reflected at sea ice surface at 320 nm; Spectral irradiance, upward, reflected at sea ice surface at 321 nm; Spectral irradiance, upward, reflected at sea ice surface at 322 nm; Spectral irradiance, upward, reflected at sea ice surface at 323 nm; Spectral irradiance, upward, reflected at sea ice surface at 324 nm; Spectral irradiance, upward, reflected at sea ice surface at 325 nm; Spectral irradiance, upward, reflected at sea ice surface at 326 nm; Spectral irradiance, upward, reflected at sea ice surface at 327 nm; Spectral irradiance, upward, reflected at sea ice surface at 328 nm; Spectral irradiance, upward, reflected at sea ice surface at 329 nm; Spectral irradiance, upward, reflected at sea ice surface at 330 nm; Spectral irradiance, upward, reflected at sea ice surface at 331 nm; Spectral irradiance, upward, reflected at sea ice surface at 332 nm; Spectral irradiance, upward, reflected at sea ice surface at 333 nm; Spectral irradiance, upward, reflected at sea ice surface at 334 nm; Spectral irradiance, upward, reflected at sea ice surface at 335 nm; Spectral irradiance, upward, reflected at sea ice surface at 336 nm; Spectral irradiance, upward, reflected at sea ice surface at 337 nm; Spectral irradiance, upward, reflected at sea ice surface at 338 nm; Spectral irradiance, upward, reflected at sea ice surface at 339 nm; Spectral irradiance, upward, reflected at sea ice surface at 340 nm; Spectral irradiance, upward, reflected at sea ice surface at 341 nm; Spectral irradiance, upward, reflected at sea ice surface at 342 nm; Spectral irradiance, upward, reflected at sea ice surface at 343 nm; Spectral irradiance, upward, reflected at sea ice surface at 344 nm; Spectral irradiance, upward, reflected at sea ice surface at 345 nm; Spectral irradiance, upward, reflected at sea ice surface at 346 nm; Spectral irradiance, upward, reflected at sea ice surface at 347 nm; Spectral irradiance, upward, reflected at sea ice surface at 348 nm; Spectral irradiance, upward, reflected at sea ice surface at 349 nm; Spectral irradiance, upward, reflected at sea ice surface at 350 nm; Spectral irradiance, upward, reflected at sea ice surface at 351 nm; Spectral irradiance, upward, reflected at sea ice surface at 352 nm; Spectral irradiance, upward, reflected at sea ice surface at 353 nm; Spectral irradiance, upward, reflected at sea ice surface at 354 nm; Spectral irradiance, upward, reflected at sea ice surface at 355 nm; Spectral irradiance, upward, reflected at sea ice surface at 356 nm; albedo; Arctic Ocean; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.948813; https://doi.pangaea.de/10.1594/PANGAEA.948813

Solar radiation over and under sea ice was measured by radiation station 2020R12, an autonomous platform, installed on drifting Second-Year-Ice (SYI) in the Arctic Ocean during MOSAiC (Leg 3) 2019/20. The resulting time series describes radiation measurements as a function of place and time between 24 April 2020 and 07 August 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 ... : 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, sun: If the suns position is close to the horizon, the radiometers measure a very noisy signal. Radiometer measurements and variables which are computed from them are flagged +1 if the sun elevation is below 10 degrees; +2 if the broad band albedo exceeds the threshold 1.05 . ...