HR: 1340h
AN: A33D-0098    [Abstracts]
TI: Ground-Based Validation of ACE Measurements of Ozone and NO$_{2}$ in the Canadian Arctic
AU: * Fraser, A
EM: amery@atmosp.physics.utoronto.ca
AF: Department of Physics University of Toronto, 60 St. George St., Toronto, ON M5S1A7 Canada
AU: Berman, R
EM: berman@spectral.ca
AF: Spectral Applied Research, 10 North Rivermede Rd., Concord, ON L4K2H2 Canada
AU: Fast, H
EM: hans.fast@ec.gc.ca
AF: ARQX Meteorological Service of Canada, 4905 Dufferin Street, Toronto, ON M3H 5T4 Canada
AU: Kerzenmacher, T
EM: tobias@atmosp.physics.utoronto.ca
AF: Department of Physics University of Toronto, 60 St. George St., Toronto, ON M5S1A7 Canada
AU: MacQuarrie, K
EM: keithmacq@yahoo.ca
AF: ARQX Meteorological Service of Canada, 4905 Dufferin Street, Toronto, ON M3H 5T4 Canada
AU: McElroy, C T
EM: tom.mcelroy@ec.gc.ca
AF: ARQX Meteorological Service of Canada, 4905 Dufferin Street, Toronto, ON M3H 5T4 Canada
AU: Midwinter, C
EM: clive@atmosp.physics.utoronto.ca
AF: Department of Physics University of Toronto, 60 St. George St., Toronto, ON M5S1A7 Canada
AU: Mittermeier, R
EM: richard.mittermeier@ec.gc.ca
AF: ARQX Meteorological Service of Canada, 4905 Dufferin Street, Toronto, ON M3H 5T4 Canada
AU: Strong, K
EM: strong@atmosp.physics.utoronto.ca
AF: Department of Physics University of Toronto, 60 St. George St., Toronto, ON M5S1A7 Canada
AU: Sung, K
EM: ksung@acebox.uwaterloo.ca
AF: Department of Chemistry University of Waterloo, 200 University Ave. West, Waterloo, ON N2L3G1 Canada
AU: Walker, K A
EM: kwalker@uwaterloo.ca
AF: Department of Chemistry University of Waterloo, 200 University Ave. West, Waterloo, ON N2L3G1 Canada
AU: Wu, H
EM: hjwu@atmosp.physics.utoronto.ca
AF: Department of Physics University of Toronto, 60 St. George St., Toronto, ON M5S1A7 Canada
AB: The Atmospheric Chemistry Experiment (ACE), was successfully launched on August 12, 2003. There are two instruments on board: ACE-FTS, a high resolution infrared Fourier Transform Spectrometer, and MAESTRO (Measurements of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation), a UV-Visible dual spectrograph. Together, they can measure profiles of ozone, NO$_{2}$, N$_{2}$O, N$_{2}$O$_{5}$, NO, HNO$_{3}$, ClNO$_{3}$, CH$_{4}$, H$_{2}$O, HCl, HF, CO, CFC-11, and CFC-12, as well as temperature and pressure profiles, and aerosol extinction. The goal of the ACE mission is to investigate the chemical and dynamical processes that are involved in the distribution of ozone in the atmosphere, with a focus on the Canadian Arctic. As part of the effort to validate the two instruments, a ground-based validation campaign took place at Eureka, Nunavut (80$^{o}$N, 86$^{o}$W) at Environment Canada's Arctic Stratospheric Observatory (AStrO) from February 18 to April 18 of 2004, coinciding with the most chemically active time of year in the Arctic. Seven instruments were active during the intensive phase of the campaign (February 23 to March 9): a MAESTRO clone, a SunPhotoSpectrometer (SPS), a zenith-viewing UV-visible grating spectrometer, the ACE clone - PARIS (Portable Atmospheric Research Interferometric Spectrometer), a Bomem DA8 Fourier transform spectrometer, a Differential Absorption Lidar (DIAL), and a Brewer spectrophotometer. In addition, daily ozonesondes were released during this intensive phase. We will present comparisons of ozone and NO$_{2}$ vertical columns and, where possible, profiles retrieved using these instruments, with a focus on the period of February 28 to March 5, 2004, when there were particularly good measurement conditions for the ground-based instruments. Comparisons will also be made to coincident measurements made by MAESTRO and ACE-FTS.
DE: 3337 Numerical modeling and data assimilation
DE: 3359 Radiative processes
DE: 3360 Remote sensing
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting