Abstract. During the EUREC⁴A field study, microwave radiometric measurements were performed at Barbados Cloud Observatory (BCO) and aboard the RV Meteor and RV Maria S Merian. We present retrieved Integrated Water Vapor (IWV), Liquid Water Path (LWP) and temperature and humidity profiles as a unified, quality-controlled, multi-site dataset on a three second temporal resolution for a core period between January 19, 2020 and February 14, 2020 in which all instruments were operational. 14-channel K- and V-band measurements were performed at BCO and aboard the RV Meteor, and combined radar-radiometer measurements of a W-band Doppler radar with a single-channel radiometer instrument were conducted at 89 GHz onboard the RV Meteor and RV Maria S Merian. Mean IWV of 31.8 kgm⁻² matches independent radiosoundings at BCO with a rootmean-square difference of 1.1 kgm⁻². Mean LWP conditions in confident cloudy, non-precipitating conditions ranged between 66.5 gm⁻² at BCO to 40.4 gm⁻² aboard the RV Maria S Merian. Aboard the ships, 90 % of LWP was below 120 gm⁻² with an uncertainty of 30 % at LWP of 50 gm⁻². Up to 30 % of confident cloudy profiles ranged below the LWP detection limit due to optically thin clouds. The data set comprises of processed raw-data (Level 1), full quality-controlled post-processed instrument data (Level 2), a unified temporal resolution (Level 3), and a ready-to-use multi-site time series of IWV and LWP (Level 4), available to the public via AERIS (https://doi.org/10.25326/454, Schnitt et al., 2023). The data set complements the airborne LWP measurements conducted during EUREC⁴A and provides a benchmark tool for model-observation studies.

中文翻译：

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EUREC4A 期间的地面和船载微波辐射计测量

摘要。在 EUREC ⁴ A 实地研究期间，微波辐射测量是在巴巴多斯云天文台 (BCO) 和 RV Meteor 和 RV Maria S Merian 上进行的。我们将检索到的综合水汽 (IWV)、液态水路径 (LWP) 和温度和湿度剖面作为一个统一的、质量控制的、多站点数据集，在 2020 年 1 月 19 日至 2 月的核心时期内以三秒时间分辨率呈现2020 年 14 日，所有仪器均已运行。在 BCO 和 RV Meteor 上进行了 14 通道 K 和 V 波段测量，并在 RV Meteor 和 RV Meteor 上以 89 GHz 进行了 W 波段多普勒雷达与单通道辐射计仪器的组合雷达辐射计测量RV 玛丽亚 S 梅里安。平均 IWV 为 31.8 kgm ^-2与 BCO 处的独立无线电探测相匹配，均方根差为 1.1 kgm ^-2。在 BCO 的66.5 gm ⁻²到 RV Maria S Merian 的40.4 gm ⁻²之间，有信心的多云、非降水条件下的平均 LWP 条件。在船上，90% 的 LWP 低于 120 gm ^-2，LWP 为 50 gm ^{-2时的不确定性为 30%}. 由于光学薄云，高达 30% 的置信多云剖面低于 LWP 检测限。该数据集包括处理过的原始数据（1 级）、完全质量控制的后处理仪器数据（2 级）、统一的时间分辨率（3 级）和随时可用的多站点时间序列IWV 和 LWP（4 级），可通过 AERIS 向公众提供（https://doi.org/10.25326/454，Schnitt 等人，2023 年）。^{该数据集补充了 EUREC 4} A期间进行的机载 LWP 测量，并为模型观测研究提供了基准工具。