Simulated rimed aggregates generated with https://github.com/jleinonen/aggregation in setting "aggregation followed by riming". Aggregates were built from between 10 to 700 monomer crystals of columns, dendrites, needles, plates or rosettes with mean sizes of 100 or 200 micrometer. Then they were exposed to ELWP = 2.0 kg m⁻². Monomer crystals are composed of cubical elements with resolution 20 micrometer. Frozen rime droplets are also represented by 20 micrometer cubes. The data set contains folders with evolution (evol) and shape files for each monomer crystal type. For each particle one evolution and one corresponding shape file exists. The evolution (evol) file contains particle mass, rime mass, area, size, fall speed (Heymsfield&Westbrook, 2010), fall speed (Khvorostyanov&Curry, 2005) for each step during the aggregation and riming process. The corresponding shape file contains the x,y,z positions of the cubical elements that compose the particle for each step. For further documentation see readme.