Experimental data for "Fragmentation of ice particles: laboratory experiments on graupel-graupel and graupel-snowflake collisions"

<p>Graupel-graupel and graupel-snowflake collisions<br> experiments were carried out in still air conditions in the cold room of the Wind tunnel laboratory of the<br> Johannes Gutenberg University, Mainz. Graupel particles were first exposed to supersaturated air conditions, under which dendritic ice crystals have grown on their surface.<br> All fragments resulting from graupel-graupel collisions were<br> collected and investigated under a digital microscope. Fragments resulting from graupel-snowflake collisions were observed and recorded instantly after collision using a<br> holographic instrument. Number, size, area, and aspect ratio distributions of fragments were derived.&nbsp;</p> <p>These files contain data collected during the graupel-graupel and graupel-snowflake collisions. These data served for generating the figures in the publication.</p> <p>The files Graupel_graupel_number_CKE_mass_size.csv and Graupel_snowflake_CKE_mass_size give information on the experimental properties of the graupel-graupel and graupel-snowflake collisions, respectively.<br> For these two files, the first column gives the name of the experiment (e.g. snow1). Each line is corresponding to one collision experiment.</p> <p>The concrete data for each collision experiment is provided in the data file having the corresponding name, e.g., snow_data1.csv contains the data of collision experiment snow1, etc.</p> <p>Readme_graupel_data.txt and Readme_snow_data.txt contain collision kinetic energies of graupel-graupel and graupel-snowflake collisions, respectively.</p> <p>Graupel_crystal_surface.csv gives the estimated number of crystal for defined bins (Fig. 12 dashed line) on the surface of the 2 mm graupel before the collision.</p> <p>&nbsp;</p>