PONEX - Experimental Design

Hangar Ground-based Site:

ECCC upper air site conducts 2x daily radiosonde launches & surface met obs:

Additional sonde launches during research flights

ECCC instrument suite for 24/7 automated obs provide:

Cal/val of Convair instruments
Fill gaps in observing capabilities (e.g., water vapour profiling)
Boundary layer & thermodynamic profiling observations
Surface meteorology and hydrometeor classification

University instruments:

AERI would complement FIRR-2, WV, trace gas profiling
UQAM Doppler lidar (winds, aerosols) at Trail Valley?
Additional instruments TBD

Trail Valley Creek site located North of Inuvik:

Suite of precipitation, meteorological, and radiation instruments (in-situ and remote sensing)

Instrumentation:

Instrument	Geophysical Variable	Processing Performed
Pluvio2	Snow/rain rate	ECCC: on-site, real-time
Parsivel	Snow/rain rate, hydrometeor classification	ECCC: on-site, real-time
FD71P	Snow/rain rate, hydrometeor classification, visibility	ECCC: on-site, real-time
WXT520	Surface met (P, T, RH, winds, precip rate)	ECCC: on-site, real-time
MRR	Rain rate	ECCC: on-site, real-time
Doppler lidar	Vertical wind profile Cloud base height PBL height Aerosol backscatter profile	ECCC: on-site, real-time
DIAL (WV) lidar	Vertical water vapour profile Cloud base height Aerosol backscatter profile	ECCC: on-site, real-time by Vaisala software
MP3000 radiometer	Vertical thermodynamic profiling (WV, T)	ECCC: on-site, real-time by Radiometrics software
Mobile AERI (?)	Downwelling IR radiation	McGill U

Ground-based Sites:

Inuvik Hangar surface site on September 23 2025, with the airport runway and green hangar behind (facing SW)

Inuvik

Inuvik hangar surface site during sunrise, September 23 2025 (facing E)

Inuvik

Inuvik Hangar

Inuvik Hangar

Inuvik Airport (Hangar sites)

Inuvik Airport

Trail Valley Creek Site

Valley Creek