HR: 0830h
AN: A51A-14    [Abstracts]
TI: Long-term Stratospheric Measurements at Lauder, New Zealand, and Arrival Heights, Antarctica, using Fourier Transform Spectrometers
AU: Wood, S W
EM: s.wood@niwa.co.nz
AF: National Institute of Waterand Atmospheric Research, Lauder Private Bag 50061 Omakau, Central Otago, 9182 New Zealand
AU: Smale, D
EM: d.smale@niwa.co.nz
AF: National Institute of Waterand Atmospheric Research, Lauder Private Bag 50061 Omakau, Central Otago, 9182 New Zealand
AU: Jones, N B
EM: njones@uow.edu.au
AF: Department of Chemistry, University of Wollongong, Northfields Ave, Wollongong, NSW 2522 Australia
AU: Matthews, A
EM: a.matthews@niwa.co.nz
AF: National Institute of Waterand Atmospheric Research, Lauder Private Bag 50061 Omakau, Central Otago, 9182 New Zealand
AU: * Connor, B J
EM: b.connor@niwa.co.nz
AF: National Institute of Waterand Atmospheric Research, Lauder Private Bag 50061 Omakau, Central Otago, 9182 New Zealand
AU: Batchelor, R L
EM: r.batchelor@niwa.co.nz
AF: National Institute of Waterand Atmospheric Research, Lauder Private Bag 50061 Omakau, Central Otago, 9182 New Zealand
AU: Goldman, A
EM: goldman@ucar.edu
AF: Department of Physics and Atronomy, University of Denver, 2112 E Wesley Ave, Denver, CO 80208-0202 United States
AU: Rinsland, C P
EM: c.,p.rinsland@larc.nasa.gov
AF: NASA Langley Research Centre, mail stop 401A National Aeronutics and Space Administration, Hampton, VA 23681-2199 United States
AU: Murcray, F J
EM: fmurcray@du.edu
AF: Department of Physics and Atronomy, University of Denver, 2112 E Wesley Ave, Denver, CO 80208-0202 United States
AB: Ground-based remote measurements of selected stratospheric trace species using Fourier transform spectrometers (FTS) at mid-infrared wavelengths (2-14 microns) began in Lauder, New Zealand (45 ° S), in the 1980s. These have been expanded and improved over many years, to include more trace gases, and to derive some information of the vertical profile of the measured gases. The initial focus was on gases that are important in stratospheric ozone chemistry, such as HCl and HNO₃ . Measurements of these species were also carried out on a campaign basis at Arrival Heights, Antarctica, (78 ° S) from the late 1980s and continuously from the early 1990s with the support of the New Zealand Antarctic programme and collaborating groups. In addition to chemically active species, gases that are useful as stratospheric tracers are also measured. Both Lauder and Arrival Heights are part of the international Network for the Detection of Stratospheric Change (NDSC) and several of the time series are now over 10 years in length. A consistent reanalysis of these longer time series, to be submitted to the NDSC database, will be presented. This presentation will examine some of the principal results from these data sets, including the long-term trends and variability of the measured trace gases, and the influence of anthropogenic changes and natural events in the atmosphere. It will also look at the way the programme of FTS measurements is evolving to meet new challenges. In particular, there is a new emphasis on tropospheric species, including biomass burning products and greenhouse gases, which has prompted an expansion of the programme to near-IR and visible wavelengths.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 3360 Remote sensing
DE: 9310 Antarctica
DE: 9355 Pacific Ocean
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly