HR: 1340h
AN: A43B-0096    [Abstracts]
TI: Accounting for Tropospheric Ozone in the Measurement of Total Column Ozone from the Ozone Mapping and Profiler Suite
AU: * Seftor, C J
EM: colin_seftor@ssaihq.com
AF: Science Systems and Applications, Inc, 10210 Greenbelt Road, Lanham, MD 20706
AU: Jaross, G
EM: glen_jaross@ssaihq.com
AF: Science Systems and Applications, Inc, 10210 Greenbelt Road, Lanham, MD 20706
AU: Larsen, J C
EM: jack_c_larsen@raytheon.com
AF: Raytheon Information Solutions, 1616 McCormick Drive, Upper Marlboro, MD 20774
AU: Swissler, T J
EM: tswiss5@comcast.net
AF: Swissler Info Tech, 1352 Manitou Ave, Steamboat Springs, CO 80487
AB: Measurements from spaceborne backscattered ultraviolet (BUV) sensors like the National Polar-orbiting Operational Environmental Satellite System (NPOESS) Ozone Mapping and Profiler Suite (OMPS) instrument are relatively insensitive to the amount of ozone in the troposphere. The error due to this insensitivity is one of the largest components in the total error budget for such an instrument and, unless accounted for, would lead to OMPS retrievals that did not meet the NPOESS precision specification. A technique to correct for this insensitivity has been incorporated into the OMPS total column ozone retrieval algorithm. The technique relies on determining the efficiency of measuring tropospheric ozone for a given retrieval. An estimate of the tropospheric ozone amount is then obtained by subtracting the stratospheric component from an initial retrieval of total column ozone amount. The stratospheric component is determined using independent ozone profile information obtained from the OMPS limb-retrieval sensor-algorithm system. The tropospheric efficiency is used to correct the tropospheric ozone estimate, which is then, in turn, used to correct the total column ozone retrieval. We will provide details on the technique as well as simulation results indicating the improvement in total column ozone retrievals using the technique. We will also provide estimates of the remaining tropospheric ozone errors after our correction is applied.
DE: 0365 Troposphere: composition and chemistry
DE: 0394 Instruments and techniques
DE: 3360 Remote sensing
DE: 3394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005