| タイトル | Southern Hemisphere Additional Ozonesondes (SHADOZ) Ozone Climatology (2005-2009): Tropospheric and Tropical Tropopause Layer (TTL) Profiles with Comparisons to Omi-based Ozone Products |
| 本文（外部サイト） | http://hdl.handle.net/2060/20140009214 |
| 著者（英） | Ogino, S-Y; Fujiwara, Masatomo; Witte, Jacquelyn C.; Da Silva, F. Raimundo; Tsuruta, Haruo; Maata, Matakite; Stubi, Rene; Coetzee, G. J. R.; Miller, Sonya K.; Thuy Ha, Hoang T.; Selkirk, Henry B.; Andres Diaz, Jorge; Komala, Ninong; Oltmans, Samuel J.; Voemel, Holger; Canossa, Jessica Valverde; Paes Leme, N. M.; Mutai, C.; Yonemura, S.; Nguyo, J.; Johnson, Brian J.; Calpini, Bertrand; Thompson, Anne M.; bt Mohammad, Maznorizan; Tilmes, Simone; Scheele, Rinus; Schmidlin, F. J.; Posny, Francoise; Thouret, Valerie; Shiotani, Masato; Levrat, Gilbert; Kollonige, Debra W.; Tan Thanh, Nguyen T. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2012-12-01 |
| 言語 | eng |
| 内容記述 | We present a regional and seasonal climatology of SHADOZ ozone profiles in the troposphere and tropical tropopause layer (TTL) based on measurements taken during the first five years of Aura, 2005-2009, when new stations joined the network at Hanoi, Vietnam; Hilo, Hawaii; Alajuela Heredia, Costa Rica; Cotonou, Benin. In all, 15 stations operated during that period. A west-to-east progression of decreasing convective influence and increasing pollution leads to distinct tropospheric ozone profiles in three regions: (1) western Pacific eastern Indian Ocean; (2) equatorial Americas (San Cristobal, Alajuela, Paramaribo); (3) Atlantic and Africa. Comparisons in total ozone column from soundings, the Ozone Monitoring Instrument (OMI, on Aura, 2004-) satellite and ground-based instrumentation are presented. Most stations show better agreement with OMI than they did for EPTOMS comparisons (1998-2004; Earth-ProbeTotal Ozone Mapping Spectrometer), partly due to a revised above-burst ozone climatology. Possible station biases in the stratospheric segment of the ozone measurement noted in the first 7 years of SHADOZ ozone profiles are re-examined. High stratospheric bias observed during the TOMS period appears to persist at one station. Comparisons of SHADOZ tropospheric ozone and the daily Trajectory-enhanced Tropospheric Ozone Residual (TTOR) product (based on OMIMLS) show that the satellite-derived column amount averages 25 low. Correlations between TTOR and the SHADOZ sondes are quite good (typical r2 0.5-0.8), however, which may account for why some published residual-based OMI products capture tropospheric interannual variability fairly realistically. On the other hand, no clear explanations emerge for why TTOR-sonde discrepancies vary over a wide range at most SHADOZ sites. |
| NASA分類 | Meteorology and Climatology |
| レポートNO | GSFC-E-DAA-TN9558 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
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