FRAGMENT has delivered groundbreaking results through comprehensive field campaigns, laboratory analyses, and model developments. Field campaigns in Morocco, Iceland, the United States, and Jordan integrated advanced instrumentation and sampling techniques to create unprecedented datasets. These include detailed measurements of meteorology, PSDs, mineralogy, and optical properties of soil and airborne dust. The results reveal strong dependencies of dust properties on source region characteristics, highlighting the variability in emitted PSDs and size-resolved mineralogy. Observations confirm that supercoarse and giant particles are more prevalent than previously estimated, and key mineral groups exhibit size-dependent behaviors consistent with FRAGMENT’s hypotheses.
FRAGMENT is closely tied to NASA’s EMIT mission, contributing to the development and calibration of the first global surface mineralogical atlas. New mineral abundance estimation models have been developed and refined, leveraging laboratory and field data. These innovations mark a paradigm shift in the ability to retrieve and apply mineralogical data for climate research.
In climate modeling, FRAGMENT has significantly advanced climate modeling by incorporating mineralogy-aware emission schemes, optical properties, atmospheric chemistry, clouds and radiative interactions. Uncertainties in dust radiative forcing have been reduced, with new findings linking regional variations in aerosol mineralogy to observed discrepancies in dust absorption. The project has also contributed to new global dust optical depth datasets, improved emission constraints using inversion modeling and data assimilation, and quantified the climatic impacts of mineralogical variability.
These achievements are complemented by interdisciplinary dissemination efforts, fostering collaboration and advancing understanding across fields such as meteorology, spectroscopy, and climate modeling.
