K. Strong (U. Toronto) — Stratospheric Ozone Lidar system (SOLID) deployed in February 1993 under PI A. Carswell. Nighttime operations only. SOLID has five detection channels: two Rayleigh channels for stratospheric ozone and temperature (308 and 353 nm), two Raman channels to improve the ozone and temperature profiles in the presence of aerosols (332 and 385 nm, installed in 1994), and one Raman channel for water vapour (405 nm, installed in 1998). Operation suspended for 2002 and 2003. Operations resumed in 2004–2009 on a campaign basis schedule (~2 weeks in February-March) under PI K. Strawbridge. Operation suspended for 2010-2016 due to technical and funding issues. Operations resumed under PI J. Drummond since 2017 on the ~4–6 week period leading up to polar sunrise in January—March and ~2 week period in October-November. Operations since April 2020 have been affected by the lack of on-site support due to the COVID-19 pandemic, funding, and restricted access to the Ridge Lab. Since 2020 the PI of SOLID and PEARL is Kimberly Strong (University of Toronto).
Early data exist in the database for 1993–1998 and 2004–2009 in NASA Ames format. Since 2017 the data are submitted in HDF format.