D. Smale and J. Robinson (NIWA) – Trace gas profiles beginning in 1996 with a Bruker 120M (400-4000 cm 1 range, 0.0035 cm 1 resolution). A Bruker 125HR (400-4000 cm 1 range, 0.0035 cm 1 resolution) was installed in November 2014 and operated in parallel with the Bruker 120M. Intercomparisons between the two instruments occurred over the Austral Summer seasons 2014-2015 and 2015-2016) with the retirement of the Bruker 120M in February 2016. From 1991-1995 measurements were taken using a Bomem DA2 (0.02 cm 1 resolution) and an Eocom (0.06 cm 1 resolution). 1991-1995 HCl and HNO3 total column data are archived under the previous PI (Murcray).
P. Disterhoft (NOAA/ESRL) and G. Bernhard (Biospherical Instruments) – Measurements of the spectral distribution of irradiance from 285-600 nm with an SUV-100 double monochromator. Measurements were initiated in March 1988. The SUV-100 is calibrated fortnightly during the measurement season.
R. Querel (NIWA) – Zenith sky DOAS, NO2 column measurements since 1991 using a scanning grating monochromator. Two units operated in parallel, one at Scott Base, one at Arrival Heights. In 1998 a MAXDOAS UV/Vis spectrometer was installed and operated in conjunction with the University of Heidelberg.
In 2005 a UV/Vis Grating CCD array spectrometer was installed for measurements of BrO and OClO. In November 2013 the spectrometer was reconfigured (wavelength region expanded) to include spectral measurements to permit NO2 retrievals. Some data archived under former PIs (Wood and Johnston).
ESRL: Earth System Research Laboratory (NOAA, United States)