  The study of naturally occurring turbulent flows requires ability to collect
empirical data down to the fine scales. While hotwire anemometry offers such
ability, the open field studies are uncommon due to the cumbersome calibration
procedure and operational requirements of hotwire anemometry, e.g., constant
ambient properties and steady flow conditions. The combo probe-the combined
sonic-hotfilm anemometer developed and tested over the last decade-has
demonstrated its ability to overcome this hurdle. The old-er generation had a
limited wind alignment range of 120 degrees and the in-situ calibration
procedure was human decision based. This study presents the next generation of
the combo probe design, and the new fully automated in-situ calibration
procedure implementing deep learning. The elegant new design now enables
measurements of the incoming wind flow in a 360-degree range. The improved
calibration procedure is shown to have the robustness necessary for operation
in everchanging open field flow and environmental conditions. This is
especially useful with diurnally changing environments or non-stationary
measuring stations, i.e., probes placed on moving platforms like boats, drones,
and weather balloons. Together, the updated design and the new calibration
procedure, allow for continuous field measurements with minimal to no human
interaction, enabling near real-time monitoring of fine-scale turbulent
fluctuations. Integration of these probes will contribute toward generation of
a large pool of field data to be collected to unravel the intricacies of all
scales of turbulent flows occurring in natural setups.
