RV Investigator Voyage IN2015_V01 BASTA cloud radar (DRAFT)

This record describes data from the BASTA cloud radar, collected on the Marine National Facility RV Investigator voyage IN2015_V01. This voyage departed Hobart on the 21st March and returned to Hobart on the 29th of March, 2015.The BASTA cloud radar is a vertically-pointing 95 GHz FM-CW (Frequency Modulation - Continuous Wave) radar. It measures vertical profiles of radar reflectivity (approximately proportional to the cloud particle diameter to the 4th power), and Doppler velocity (sum of vertical wind speed and terminal fall velocity of cloud particles when pointing vertically) at 1.5s temporal resolution, and four different vertical resolutions (12.5, 25, 100 and 200m) up to 12 km height. Currently the instrument is not mounted on a stabilized platform but will be in a near future.This cloud radar is owned by the Australian Bureau of Meteorology. It was developed by the Laboratoire ATmosphere, Milieux et Observations Spatiales (LATMOS) in France. It is serial number 2.Calibration of the cloud radar was performed in 2014 using fixed targets of known reflectivity, and reflectivity in light rain.

本数据集记录了澳大利亚海洋国家设施（Marine National Facility）旗下RV Investigator调查船IN2015_V01航次期间采集的BASTA云雷达（BASTA cloud radar）观测数据。该航次于2015年3月21日从霍巴特起航，同年3月29日返回霍巴特。BASTA云雷达为垂直指向式95 GHz调频连续波（Frequency Modulation - Continuous Wave, FM-CW）雷达，可获取雷达反射率（近似与云粒子直径的4次方成正比）与多普勒速度（垂直指向时为垂直风速与云粒子终端下落速度的矢量和）的垂直廓线，时间分辨率为1.5秒，可提供12.5、25、100及200米共4种不同垂直分辨率的观测数据，最大观测高度可达12千米。目前该仪器未搭载于稳定平台，但将于不久的将来完成适配升级。该云雷达归澳大利亚气象局（Australian Bureau of Meteorology）所有，由法国大气、环境与空间观测实验室（Laboratoire ATmosphere, Milieux et Observations Spatiales, LATMOS）研发，序列号为2。该云雷达曾于2014年采用已知反射率的固定标靶及小雨中的反射率数据完成标定。