HR: 17:30h
AN: A12E-07    [PDF]
TI: PV Mapping and the Precision of Lower Stratospheric Ozone Column Measurements From Satellites
AU: * Cunnold, D M
EM: cunnold@eas.gatech.edu
AF: Georgia Institute of Technology, School of EAS, Georgia Tech., 311 Ferst Drive, Atlanta, GA 30332-0340
AU: Yang, E
EM: eun-su.yang@eas.gatech.edu
AF: Georgia Institute of Technology, School of EAS, Georgia Tech., 311 Ferst Drive, Atlanta, GA 30332-0340
AU: Wang, H
EM: raywang@eas.gatech.edu
AF: Georgia Institute of Technology, School of EAS, Georgia Tech., 311 Ferst Drive, Atlanta, GA 30332-0340
AU: Jing, P
EM: ping@eas.gatech.edu
AF: Georgia Institute of Technology, School of EAS, Georgia Tech., 311 Ferst Drive, Atlanta, GA 30332-0340
AB: AURA is expected to produce more precise measurements of ozone throughout the lower stratosphere than has been possible from previous satellite instruments. Excellent precision in lower stratospheric ozone measurements is needed in order to assess ozone changes in this region and, in particular, for inferring tropospheric ozone columns by the residual method. In this paper PV mapping (using the NCEP re-analysis data set) is combined with SAGE II and HALOE ozone measurements and the precision of these measurements and of PV mapping at mid-latitudes is assessed. It is shown for example that PV mapping in the lowest part of the stratosphere can account for a significant fraction of the differences between ozonesonde measurements at Hohenpeissenberg and Payerne which are approximately 400km apart. There is no difference between using SAGE or HALOE or a combination of all the ozonesonde measurements at mid-latitudes for defining the PV-ozone relationships. The calculations thus suggest that the limitation on the precision of PV-mapped ozone is determined by the precision of PV estimates from the assimilation models. The precision of PV-mapped, mid-latitude, lower-stratospheric ozone columns from SAGE and HALOE measurements is estimated.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3360 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting