NASA Technical Reports Server (NTRS) 20000114831: Tropical Tropospheric Ozone: A Multi-Satellite View From TOMS and Other Instruments PDF
Preview NASA Technical Reports Server (NTRS) 20000114831: Tropical Tropospheric Ozone: A Multi-Satellite View From TOMS and Other Instruments
717-oo0 Tropical tropospheric ozone: A multi-satellite view from TOMS and other instruments Anne M Thompson NASA/GSFC/Code 916, Greenbelt, N_ 2077[ USA Robert D Hudson, Hua Guo Dept of Meteorology, U Maryland, College Park, MD 20742 USA Jacquelyn C Witte, Tom L Kucsera EITI at NASA/GSFC/Code 916, Greenbelt, MID2077l USA Matthew G Seybold Dept ofMarine, Atmospheric and Earth Sciences, No Carolina State Umv., Raleigh, NC USA Abstract. New tropospheric ozone and aerosol Australian burning. products from the TOMS (Total Ozone Mapping Another factor contributing to high TTO in Spectrometer) satellite instrument can resolve episodic October-November may be lightning NO which leads pollution events in the tropics and interannual and to ozone formation [Martin et al., 2000]. Lightning seasonal variability Modified-residual (MR) Nimbus activity is observed _:ith satellite data from the OTD 7 tropical tropospheric ozone (TrO), two maps/month (Optical Transient Detector) and TRMM (Tropical (1979-1992, 1-deg. latitude x 2--deg. longitude) within Rainfall Measuring Mission) satellite Lightning the region in which total ozone displays a tropical ' Imaging Sounder. High-ozone peaks over the south wave-one pattern [maximum 20S to 20N; Thompson tropical Atlantic, for example, were traced back to and Hudson, 1999], are available in digital form at lightning activity over southern Africa during the R/I/ http://metosrv2.umd.edu/-tropo. Also available are R H Brown Aerosols99 cruise [Thompson et al., 2000]. preliminary 1996-1999 MR-TTO maps based on real-time Earth-Probe (EP),q'OMS observations. 2. High-Resolution Views of Biomass Burning Examples of applications are given. The Nimbus 7 record captures the 1982-1983 1. Tropical Ozone and Smoke Aerosol Seasonality ENSO (El Nifio-Southern Oscillation) in a feature of > 40 DU in Figure 1. More intense ENSO-induced Modified-residual "I'FO and smoke aerosol biomass fires of 1997-1998, viewed by Earth-Probe time-series from Nimbus 7/TOMS (1979-1992) are TOMS are detected as an extended period of high TTO used to evaluate seasonal patterns and trends in the (solid line, Figure 2). The low smoke aerosol signal tropics in the 1980's [Thompson and Hudson, 1999; (dashed line, Figure 2) during April-May 1998 Herman et al, 1997]. Regions considered were the suggests that Indonesian TTO is due to transport of south Atlantic, southern Africa, Brazil, the eastern ozone and ozone precursors. However, burning over Pacific and the Indonesian- Malaysian-New Guinea Kalimantan and Sumatra accelerated in late August area. No significant trends in tropospheric ozone were 1997 and ozone formed rapidly over Indonesia. with found over these areas from 1980-1990, as seen in peaks in mid-September and October (Figure 2). In Figure 1, depicting Indonesian TI'O. The late November 1997 smoke and tropospheric ozone deseasonalized mean, the dashed line, with 26.6 DU in levels dropped to more typical levels. By August 1998 1980, has a trend = -0.14 DU/yr, not significant at the TTO was below 20 DU, similar to August 1996. 2-sigma level. Indonesian "r'To displays two peaks in Smoke aerosol in the region encompassing Indonesia an annual _'cle, one in May associated with SE Asian remained low throughout 1998 except for the bmmass burning, the second, in November, more likely February-March period caused by large-scale dynanmics and/or transport of Nine-day averaged TOMS tropospheric ozone over ozone and ozone precursors from African and Indonesia tnthe latter part of the local fires (mid- No_emb1e9r97a)ppearinsFigure3 Anairparcel (trajectorym')odeilsinitializedfromthreeIndian EP/TOMS Tropo. Ozone and Aerosols - Indonesia OcealnocationsRelativelhyighozone(40-50 DU, 50 2.5 near Sumatra, Singapore and Malaysia) originated ..= .J from regions with fires in central Indonesia and New ..i Guinea At 12S, 110E, lower ozone (20-30 DU) 40 2.0_ "d originated over a less polluted central Indian Ocean. 1.5_" Acknowledgments This work was supported by NASA ACMAP. TOMS aerosol data are available by ftp from <toms.gsfc.nasa gov> and tropospheric ozone 1.0_ data from <http://metosrv2.tundedtb/-tropo>. -6 1°} 0.5< O References 0.0_ 8/9612/964/97 8/9712/974/98 8/9812/98 Herman, J.R, et al., Global distribution of UV-absorbing Date aerosols from Nimbus 7/TOMSdata, J. Geophys. Res, 102, 16911-16922, 1997. Figure 2. Time-series of troposphenc ozone (solid line) and Martin, R V, et al, Detection of a lightning influence on smoke aerosol index (dashed line) over the Indonesian area tropical tropospheric ozone, Geophys. Res., Lett., 27, (5N-14S, 95-120E) from the Earth Probe/TOMS record. 1639-1642, 2000. Thompson, A M and R. D. Hudson, Tropical tropospheric ozone (TTO) maps from Nimbus 7and Earth-Probe Tropospheric Ozone from EP/TOMS TOMS by the modified-residual method: Evaluation 30 ' • with sondes, ENSO signals and trends from Atlantic regional time series, J. Geophys. Res., 104, 26961- 20 26975, 1999. Thompson, A. M, et al., Shipboard and satellite views of a tropical Atlantic tropospheric ozone maximum and 10 wave-one in January-February 1999, Geophys. Res., Lett., inpress, 2000. o 50 - - - , - - - , , - - t - , - , - - - __ ..... 40 mD 80 100 120 140 160 o_ 30 Q. -.--- ..... : :?-.._ J 0 ao 'c3 Ozone (Dobson Units) 10 © Figure 3. Nine-day averaged TTO from EP/TOMS for_,e I-.-- period 9"rlI08-971116 Superimposed 10-day back 80 82 84 86 88 90 92 trajectories init,alized at 971116 for three locations: 12S, t10E;4N, IlOE; 4N, 90E Year (Half Months) Figure 1. Time-series of tropospheric ozone from Nimbus 7/ TONIS bythe modified-residual method, 1980-1990, with data averaged from 0-12S, 80-I 10E, covering western Lndonesia, Singapore and Mataysia Dashed line represents :rend (a not statlst_cally s_gniticant loss) deduced from a model fit todeseasonalized I'TO data. Mean ts25 6DU ;0c, _ D o4o7__ -7 17_oo o Tropical tropospheric ozone: A multi-satellite view from TOMS and other instruments Anne M Thompson NASAJGSFC/Code 916, Greenbelt, MD 20771 USA Robert D Hudson, Hua Guo Dept of Meteorology, U Maryland, College Park, MD 20742 USA Jacquelyn C Witte, Tom L Kucsera EITIat NASAJGSFC/Code 916, Greenbelt, MD 20771 USA Matthew G Seybold Dept ofMarine, Atmospheric and Earth Sciences, No Carolina State Univ., Raleigh, NC USA Abstract. New tropospheric ozone and aerosol Australian burning. products from the TOMS (Total Ozone Mapping Another factor contributing to high TTO in Spectrometer) satellite instrument can resolve episodic October-November may be lightning NO which leads pollution events in the tropics and interannual and to ozone formation [Martin et al., 2000]. Lightning seasonal variability. Modified-residual (MR) Nimbus activity is observed with satellite data from the OTD 7 tropical tropospheric ozone (TFO), two maps/month (Optical Transient Detector) and TRMM (Tropical (1979-1992, l-deg, latitude x 2-deg. longitude) within Rainfall Measuring Mission) satellite Lightning the region in which total ozone displays a tropical Imaging Sounder. High-ozone peaks over the south wave-one pattern [maximum 20S to 20N; Thompson tropical Atlantic, for example, were traced back to and Hudson, 1999], are available in digital form at lightning activity over southern Africa during the R/V http://metosrv2.umd.edu/-tropq. Mso available are R H Brown Aerosols99 cruise [Thompson et al., 2000]. preliminary 1996-1999 MR-'Iq'O maps based on real-time Earth-Probe (EP)/TOMS observations. 2. High-Resolution Views of Biomass Burning Examples of applications are given. The Nimbus 7 record captures the 1982-1983 1. Tropical Ozone and Smoke Aerosol Seasonality ENSO (El Nifto-Southern Oscillation) in a feature of > 40 DU in Figure 1. More intense ENSO-induced Modified-residual TTO and smoke aerosol biomass fires of 1997-1998, viewed by Earth-Probe time-series from Nimbus 7/TOMS (1979-1992) are TOMS are detected as an extended period of high TTO used to evaluate seasonal patterns and trends in the (solid line, Figure 2). The low smoke aerosol signal tropics in the 1980's [Thompson and Hudson, 1999; (dashed line, Figure 2) during April-May 1998 Herman et al, 19971. Regions considered were the suggests that Indonesian TrO is due to transport of south Atlantic, southern Africa, Brazil, the eastern ozone and ozone precursors. However, burning over Pacific and the Indonesian- Malaysian-New Guinea Kalimantan and Sumatra accelerated in late August area. No significant trends in tropospheric ozone were 1997 and ozone formed rapidly over Indonesia, with found over these areas from 1980-1990, as seen in peaks in mid-September and October (Figure 2). In Figure 1,depicting Indonesian TTO. The late November 1997 smoke and tropospheric ozone deseasoualized mean, the dashed line, with 26.6 DU in levels dropped to more typical levels. By August 1998 1980, has a trend = -0.14 DU/yr, not significant at the TrO was below 20 DU, similar to August 1996. 2-sigma level. Indonesian TTO displays two peaks in Smoke aerosol in the region encompassing Indonesia an annual cycle, one in May associated with SE Asian remained low throughout 1998 except for the biomass burning, the second, in November, more likely February-March period. caused by large-scale dynanmics and/or transport of Nine-day averaged TOMS tropospheric ozone over ozone and ozone precursors from African and Indonesia in the latter part of the local fires (mid- November 1997) appears in Figure 3. An air parcel EP/TOMS Trooo. Ozone and (trajectory) model is initialized from three Indian Aerosols -'Indonesia Ocean locations. Relatively high ozone (40-50 DU, J J J ! i 2.5 near Sumatra, Singapore and Malaysia) originated ,-,1 from regions with fires in central Indonesia and New 40 Guinea At 12S, 110E, lower ozone (20-30 DU) 2.0_ originated over a less polluted central Indian Ocean. 3o Acknowledgments. This work was supported by 1.5,._ NASA ACMAP. TOMS aerosol data are available by ftp from <toms.gsfc. nasa. gov> and tropospheric ozone 1.0_ data from <http://metosrv2.tund.edu/-tropo>. 10 0.5'_ -6 o References :_ o I I I I I I 0.0_ 8/9612/964/97 8/9712/974/98 8/9812/98 Herman, J.R., et al., Global distribution of UV-absorbing Date aerosols from Nimbus 7frOMSdata, J. Geophys. Res., 102, 16911-16922, 1997. Figure 2, Time-series oftropospheric ozone (solid line) and Martin, R. V., et al., Detection of a lightning influence on smoke aerosol index (dashed line) over the Indonesian area tropical tropospheric ozone, Geophys. Res., Lett., 27, (5N-14S, 95-120E) from the Earth Probe/TOMS record. 1639-1642, 2000. Thompson, A. M.and R. D. Hudson, Tropical tropospheric ozone (TTO) maps from Nimbus 7and Earth-Probe Tropospheric Ozone from EP/TOMS TOMS bythe modified-residual method: Evaluation 3O with sondes, ENSO signals and trends from Atlantic regional time series, J. Geophys. Res., 104, 26961- 2O 26975, 1999. Thompson, A. M, et al., Shipboard and satellite views of a tropical Atlantic tropospheric ozone maximum and 10 wave-one in January-February 1999, Geophys. Res., Lett., in press, 2000. 0 -10 -20 80 100 120 140 160 _'_, I b o o o o o Ozone (Dobson Units) Figure 3. Nine-day averaged TTO from EP/TOMS for the period 971108-971116. Superimposed 10-day back , , ......... I . . . L . . - , - . . 82 84 86 88 90 92 trajectories initialized at 971116 for three locations: 12S, IlOE; 4N, I10E; 4N, 90E. Year (Half Months) Figure 1, Time-series oftropospheric ozone from Nimbus 7/ TOMS by the modified-residual method, 1980-1990, with data averaged from 0-12S, 80-110E, covering western Indonesia, Singapore and Malaysia. Dashed line represents trend (a not statistically significant loss) deduced from a model fitto deseasonalized ]'TO data. Mean is 26.6 DU.
The list of books you might like
