ClO

R. de Zafra (SUNY) — Deployments of a mm wave spectrometer for the austral springs of 1992 to 1995. N₂O measurements are also available at McMurdo for the austral spring of 1994.

R. de Zafra (SUNY) — Measurements (using the SIS receiver/ spectrometer) were made at this site during the austral springs of 1997 and 1998 for an intercomparison with the Millitech instrument at Scott Base.

R. de Zafra (SUNY) – Two mm wave spectrometers (a rebuild of the original SUNY instrument and a new unit) have operated in a campaign mode. Measurements were conducted at Thule for the winters of 1992 and 1993. N₂O measurements are also available at Thule for these winters.

G. Nedoluha and R. M. Gomez (NRL); I. S. Boyd and B. J. Connor (BC Consulting); A. Parrish (U. MA), and T. Mooney (SUNY) — Millitech instrument deployed in January 1996 following measurements and intercomparisons at Mauna Kea (19.83°N, 155.48°W).  Has been making measurements (16–43 km) yearly in the August–October period since then.

G. Nedoluha and R. M. Gomez (NRL); B. J. Connor, and I. S. Boyd (BC Consulting); and A. Parrish (U. MA) — One of three NDACC instruments developed by Millitech; in operation since 1992. Two instruments were intercompared at this site for 22 months from 1993 to 1995 prior to the Antarctic deployment of one of them (see Scott Base entry). The instrument was moved to Mauna Loa in September 2015 where it underwent major changes.  It returned to Mauna Kea in June 2018.

J. Notholt (U. Bremen) and O. Schrems (AWI) – Campaign operations in winter of 1993/94; permanent operation in winter/spring since 1995. Participated in a ClO radiometer intercomparison at Ny Ålesund in spring 1997. Intermittent data archived from 1995 to 2003 under previous PI (K. Kunzi).