Annual SMOS brightness temperature monitoring report

This document provides an annual summary of the performance of the European Space Agency (ESA) Soil Moisture and Ocean Salinity (SMOS) brightness temperature (Tb) monitoring run routinely at the European Centre for Medium-range Weather Forecasts (ECMWF). The period covered is September 2019 to August 2020. Several different monitoring plots are presented, and notable features are described in detail. Also, potential improvements to the monitoring system are proposed.