Table 1.

Nomenclature.

CNT	Classical nucleation theory
INAS	Ice nucleation active sites
INP	Ice-nucleating particle
IF	Immersion freezing
ISO	Isothermal immersion freezing experiments
CCR	Constant cooling rate immersion freezing experiments
FF	Frozen fraction of droplets
UnF	Unfrozen fraction of droplets
ns	Ice-active sites number density
ISA	Ice-nucleating particle surface area
Jhet	Heterogeneous ice nucleation rate coefficient
$J_{\text{het}}^{\text{actual}}$	Heterogeneous ice nucleation rate coefficient applying distributed ISA
$J_{\text{het}}^{\text{apparent}}$	Heterogeneous ice nucleation rate coefficient applying identical ISA