HR: 0830h
AN: A51A-03    [Abstracts]
TI: Decadal Time Series of UV Irradiances at two NDSC Sites
AU: McKenzie, R L
EM: r.mckenzie@niwa.co.nz
AF: National Institute of Water and Atmospheric Research, NIWA Lauder, PB 50061, Omakau, C. Otago, 9182 New Zealand
AU: Johnston, P V
EM: p.johnston@niwa.co.nz
AF: National Institute of Water and Atmospheric Research, NIWA Lauder, PB 50061, Omakau, C. Otago, 9182 New Zealand
AU: Kotkamp, M
EM: m.kotkamp@niwa.co.nz
AF: National Institute of Water and Atmospheric Research, NIWA Lauder, PB 50061, Omakau, C. Otago, 9182 New Zealand
AU: O'Neill, M
EM: Michael.O'Neill@noaa.gov
AF: CIRES, University of Colorado, Skaggs Bldg Broadway, Boulder, CO 80303 United States
AU: * Hofmann, D J
EM: David.J.Hofmann@noaa.gov
AF: NOAA/CMDL, Skaggs Bldg Broadway, Boulder, CO 80303 United States
AB: The Network for the Detection of Stratospheric Change (NDSC) comprises a small number of well-instrumented unpolluted measurement sites, selected to represent large geographical areas. Its aim is to better understand the causes and effects of long term changes in atmospheric composition. In order to monitor long term ozone change and its effects, UV spectrometers were installed at the mid-latitude southern hemisphere NDSC site (Lauder New Zealand), and the tropical NDSC site (Mauna Loa Observatory, Hawaii). At NIWA's Lauder site, measurements began in December 1989; while at NOAA's Mauna Loa Observatory, measurements began in June 1995. Since deployment, data have been obtained with a high success rate. The instrumentation and data-processing are similar at both sites, and comply with the exacting standards required by the NDSC. Here we present time series of data products from these spectrometers (e.g., erythemally-weighted UV irradiance) to compare and contrast the results from each site and to illustrate the causes for variabilities, and their influences on validation of radiative transfer models and satellite data products.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0360 Transmission and scattering of radiation
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly