Fraction of spectral solar radiance transmitted through snow and sea ice as measured in different depths under sea ice (transflectance) at ROV station ODEN_AO2018_821-1@en

Measurements of transmitted radiance under sea ice and corresponding incident solar radiation at the surface have been performed on multi-year ice during the Oden_AO18 campaign (Arctic Ocean 2018: MOCCHA - ACAS - ICE) Central Arctic / North Pole drift station between 19 August and 13 September 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 radiance sensor (7° opening angle) was installed on the ROV. The transflectance is the ratio between transmitted radiance and incident irradiance. All times are given in UTC.2018年8月19日至9月13日，在Oden_AO18北冰洋科考航次（2018年北极科考：MOCCHA - ACAS - ICE）的北极中部/北极点漂移观测站的多年冰区域，开展了海冰下透射辐射亮度与对应海面入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采集后插值至1.0 nm波长间隔，并在320 nm至950 nm的全波长范围内积分得到宽带总观测数据。辐射亮度传感器（视场角7°）安装于遥控水下机器人（Remotely Operated Vehicle, ROV）之上。透射辐亮度比（transflectance）定义为透射辐射亮度与入射辐照度的比值。所有时间数据均采用协调世界时（UTC）标注。