☁️ How do scientists measure what we can’t see? 👀 Meet ARM’s microwave radiometer (MWR), a ground-based instrument quietly doing big work in atmospheric science. 🌦️🌍 By detecting microwave energy naturally emitted by the atmosphere, the #ARMMWR helps scientists peek inside clouds and track temperature, water vapor, and liquid water, which are key ingredients for improving Earth system models. 🌡️💧 🎥 Watch instrument mentor Maria Cadeddu (Argonne National Laboratory) explain how this powerfu