  Characterization of cloud properties remains a challenging task for weather
forecasting and climate modelling as cloud properties depend on interdependent
natural processes at micro and macro scales. Turbulence plays an important role
in particle dynamics inside clouds; however, turbulence mechanisms are not yet
fully understood partly due to the difficulty of measuring clouds at the
smallest scales. To address these knowledge gaps, an experimental method for
measuring the influence of fine-scale turbulence in cloud formation in-situ and
producing an in-field cloud Lagrangian dataset is being developed by means of
innovative ultra-light radioprobes. This paper presents the electronic system
design along with the obtained results from laboratory and field experiments
regarding these compact (diameter about 30 cm), light-weight (about 20 g), and
expendable devices designed to passively float and track small-scale turbulence
fluctuations inside warm clouds. The fully customized mini radioprobe board (5
cm x 5 cm) embeds sensors to measure local fluctuations and transmit data to
the ground in near real-time. The tests confirm that the newly developed probes
perform well providing accurate information about atmospheric variables,
referenced in space. The integration of multiple radioprobes allows for a
systematic and accurate monitoring of atmospheric turbulence and its impact on
cloud formation.
