HR: 1340h
AN: A13D-0980    [Abstracts]
TI: Improving forecast of Antarctic ozone hole by using Aura OMI ozone data
AU: * Zhou, S
EM: shuntai.zhou@noaa.gov
AF: NOAA/NCEP/CPC, 5200 Auth Rd., Room 806 , Camp Springs, MD 20746 United States
AU: Long, C S
EM: craig.long@noaa.gov
AF: NOAA/NCEP/CPC, 5200 Auth Rd., Room 806 , Camp Springs, MD 20746 United States
AU: Miller, A J
EM: alvin.miller@noaa.gov
AF: NOAA/NCEP/CPC, 5200 Auth Rd., Room 806 , Camp Springs, MD 20746 United States
AU: Flynn, L
EM: lawrence.flynn@noaa.gov
AF: NOAA/NESDIS, 5200 Auth Rd., Camp Springs, MD 20746 United States
AU: Beck, T
EM: trevor.beck@noaa.gov
AF: NOAA/NESDIS, 5200 Auth Rd., Camp Springs, MD 20746 United States
AU: Wu, W
EM: wanshu.wu@noaa.gov
AF: NOAA/NCEP/EMC, 5200 Auth Rd., Camp Springs, MD 20746 United States
AU: Hou, Y
EM: yu-tai.hou@noaa.gov
AF: NOAA/NCEP/EMC, 5200 Auth Rd., Camp Springs, MD 20746 United States
AU: Iredell, M
EM: mark.iredell@noaa.gov
AF: NOAA/NCEP/EMC, 5200 Auth Rd., Camp Springs, MD 20746 United States
AU: Moorthi, S
A13D-0980 AF: NOAA/NCEP/EMC, 5200 Auth Rd., Camp Springs, MD 20746 United States
AB: The evolution of the Antarctic ozone hole can be predicted by major operational numerical models up to seven days in advance. Beyond seven days the predictions are hindered in part by the model's nonlinear dynamics and in part by the lack of ozone observation inside the polar night vortex. By assimilating Aura OMI total ozone in the NCEP global forecast system (GFS), which currently uses NOAA-16 SBUV/2 ozone only, the global coverage and horizontal resolution of ozone observations are greatly enhanced. Partly because OMI has higher latitudinal resolution and cross-track measuring capacity, while the NOAA-16 orbit has drifted to a mid afternoon equator crossing time, the OMI data cover farther poleward than the SBUV/2 data in the austral winter. One expects that including OMI total ozone will help not only earlier detection and better forecast of the Antarctic ozone hole, but also to improve the forecast of polar temperature and polar vortex. Results from forecast experiments with NCEP GFS are used to determine to what extent improvements can be made by adding the OMI information.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 1610 Atmosphere (0315, 0325)
DE: 1622 Earth system modeling (1225)
DE: 1626 Global climate models (3337, 4928)
DE: 3315 Data assimilation
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005