EOS MLS Level 2 Data Processing Software, Version 4

This software reads MLS Level 1 products — the Earth Observing System (EOS) Microwave Limb Sounder (MLS) calibrated measurements of microwave radiance products and operational meteorological data — and produces a set of estimates of atmospheric temperature and composition. The software features are driven by the instrument and its unique capabilities to measure the atmospheric temperatures and composition at the Earth's limb. By careful and judicious choice of signal bands, and by dividing the computing into chunks and phases, scientifically useful products can be produced with wide spatial and temporal coverage. The software includes a highly developed forward model algorithm and an inverse model that makes efficient use of memory.