@misc{schrod2020inpc, author={Jann {Schrod} and Dominik {Kleinhenz} and Maria {H\"{o}rhold} and Tobias {Erhardt} and Sarah {Richter} and Frank {Wilhelms} and Hubertus {Fischer} and Martin {Ebert} and Birthe {Twarloh} and Damiano {Della Lunga} and Camilla Marie {Jensen} and Joachim {Curtius} and Heinz G {Bingemer}}, title={{Ice nucleating particle concentrations by droplet freezing assay measurements from the B17 ice core, Greenland, dating from 1370 to 1990}}, year={2020}, doi={10.1594/PANGAEA.922047}, url={https://doi.org/10.1594/PANGAEA.922047}, abstract={The data set reports on measurements of ice nucleating particles (INPs) from an ice core in Greenland (B17, 72.25, -37.25, 2820 m AMSL) that dates back to about 1370. INP measurements were performed using the FRIDGE INP counter as a droplet freezing assay for N = 135 meltwater samples from the core. From each sample 3 x 65 droplets of melt water (2.5 $\mathrm{\mu}$L) were pipetted onto a sample substrate. The experimental nucleation temperature T was decreased at 1 {\textdegree}C/min until every droplet was frozen. The frozen fraction (FF) as a function of T is used to calculate the INP abundance per mL of melt water. A conversion factor is used to estimate atmospheric INP concentrations. The typical time coverage of a sampe is in the order of a couple of months. Samples were selected in regular time intervals of 10 years, plus a number of additional samples. This data supplement is related to a scientific publication (doi:10.5194/acp-2020-556).}, type={data set}, publisher={PANGAEA} }