As part of the SPARC (Stratosphere-troposphere Processes And their Role in Climate) water vapour assessment (WAVAS-II), satellite measurements taken from, or coincident with, seven sites from which ground-based microwave instruments measured water vapor in the middle atmosphere. Six of the ground-based instruments are part of the Network for the Detection of Atmospheric Composition Change (NDACC) and provide datasets which can be used for drift and trend assessment.
The proposal from the Australian Bureau of Meteorology for NDACC affiliation for four Dobson measurements was discussed and approved at the 2017 NDACC Steering Committee Meeting in Boulder, Colorado. The measurements were formally invited as NDACC Affiliated shortly thereafter. The four sites are Darwin (12°S), Brisbane (27°S), Melbourne (38°S) and Macquarie Island (55° S). Total ozone records at Brisbane, Melbourne and Macquarie Island began in 1957.
The resolution from the International Association of Meteorology and Atmospheric Sciences (IAMAS) was released on November 22, 2017. This resolution specifically stresses the importance of continuation and enhancement of Earth Observation systems to monitor the atmosphere, ocean and other elements of the Earth system. It therefore strongly supports the effort of the NDACC steering committee, associated networks and data PIs to provide high quality and long-term observations for monitoring of atmospheric composition.
The annual meeting of the international Steering Committee (SC) for NDACC was held 6-10 November 2017 in Boulder, CO, USA at the National Center for Atmospheric Research (NCAR). James Hannigan of NCAR hosted the meeting. Dr. James Hurrell, a climate scientist and Director of NCAR, welcomed the attendees and gave a brief introduction to the Center’s facilities, mission, and associated programs in atmospheric and related sciences.
The annual meeting of the international Steering Committee (SC) for NDACC was held from October 17 to 21 in Bremen, Germany at the University of Bremen Guesthouse 'Teerhof'. Justus Notholt of the University of Bremen hosted the meeting.