Aranda
R/V Aranda

The Micro Rain Radar (MRR) is a ground-based, vertically pointing, continuous wave K-band (24.23 GHz) radar that measures various parameters of precipitation such as liquid water content and rain rate from near ground level to the lower troposphere. The backscatter received by the MRR’s antenna can measure precipitation size distributions in the range of 0.25 mm to 4.53 mm, as well as calculate the frequency shift of falling precipitation to be used to calculate its velocity. Additional applications of the MRR include locating bright bands, nowcasting precipitation, and capturing chemical transport during precipitation events.

The Autonomous Parsivel Unit (APU) is an in situ ground-based optical disdrometer. APU measures the size and fall velocity of hydrometeors with a size range of 0-25mm and fall velocities between 0-20 m/s. From these measurements, the drop size distribution, type, intensity, and amount of precipitation can be determined. APU operates in the 650-780 nm wavelength range and has a typical sampling frequency of 10 s.

Conductivity, Temperature, and Depth (CTD) sensors are in situ instrument packages that are used to measure water depth, pressure, salinity, temperature, and density in the ocean. CTD sensors can be deployed on various water-based platforms such as autonomous underwater vehicles (AUVs), buoys, gliders, or research vessels. When deployed on a vessel, CTD sensors are typically attached to a rosette and then lowered to the seafloor to measure water properties. CTD sensors have a typical sampling rate of 30 Hz and can collect precise measurements for a specific water depth depending on the researcher's needs.

This data will be added in future versions

The Acoustic Doppler Current Profiler (ADCP) is an in situ acoustic sensor used to measure ocean currents. ADCP uses the Doppler effect to detect sound waves to provide measurements of the speed and direction of currents throughout the water column. ADCP can easily be mounted on different water platforms such as ships, buoys, and autonomous underwater vehicles (AUVs). It also can be deployed on the seafloor to provide profile measurements of ocean currents.