Downward spectral solar irradiance as measured in different depths under sea ice (transmitted irradiance) at station ALERT2018_19_1

Measurements of transmitted solar radiation under sea ice have been performed on First-Year-Ice (FYI) and Multi-Year-Ice (MYI) during the ALERT2018 campaign (Multidisciplinary Arctic Program (MAP) - Last Ice) off Alert, Nunavut, Canada in the Lincoln Sea between 07 May and 23 May 2018. The radiation measurements have been performed with Ramses spectral radiometes (TriOS, Rastede, Germany). 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). The irradiance sensor (cos-collector) for energy budget calculations was installed on the ROV. All times are given in UTC.

2018年5月7日至5月23日，研究团队于加拿大努纳武特地区阿勒特附近的林肯海海域，依托ALERT2018科考计划（多学科北极计划（MAP）——"最后之冰"项目），针对一年冰（First-Year-Ice, FYI）与多年冰（Multi-Year-Ice, MYI）开展了海冰下透射太阳辐射的测量工作。本次辐射测量采用德国拉施泰德TriOS公司生产的Ramses型光谱辐射计完成。所有数据均以全光谱分辨率形式提供，已插值至1.0纳米的间隔，并在全波长范围（宽带总光谱：320至950纳米）内完成积分计算。用于能量收支计算的辐照度传感器（余弦收集器）搭载于遥控无人潜水器（Remotely Operated Vehicle, ROV）之上。所有时间均采用协调世界时（Coordinated Universal Time, UTC）标注。