Products of liquid water path (LWP), rain water path (RWP) and integrated water vapor (IWV, also called precipitable water vapor (PWV)) are retrieved from microwave radiometer observations with auxiliary measurements from backscatter lidar and cloud radar. The nadir measurements were taken by the German High Altitude and Long range research aircraft (HALO https://halo-research.de/) during the EUREC4A (ElUcidating
the RolE of Cloud-Circulation Coupling in ClimAte) field experiment in January and February 2020. Products are provided over tropical Atlantic east of Barbados.
This experiment provides column integrated quantities as seen from satellite perspective but with higher spatially resolution (about 1 km footprint) than available from microwave satellites.