1 / 13

Aircraft measurements of the SO 2 distribution in the upper troposphere and lower stratosphere

Aircraft measurements of the SO 2 distribution in the upper troposphere and lower stratosphere. A. Roiger, H. Schlager, K. Wissmüller, H. Aufmhoff, F. Arnold DLR, Institute of Atmospheric Physics. SSRiC Workshop 28 – 30 Oct 2013 Atlanta, GA, USA. SO 2 measurements using CI - ITMS .

dawson
Télécharger la présentation

Aircraft measurements of the SO 2 distribution in the upper troposphere and lower stratosphere

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Aircraftmeasurements of the SO2 distribution in the upper troposphere and lower stratosphere A. Roiger, H. Schlager, K. Wissmüller, H. Aufmhoff, F. Arnold DLR, Institute ofAtmosphericPhysics SSRiC Workshop 28 – 30 Oct 2013 Atlanta, GA, USA

  2. SO2measurementsusing CI - ITMS Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 • CI-ITMS (Chemical Ionization – Ion Trap MassSpectrometry) • CO3-ionchemistry (e.g. Speidel et al., 2007) • time resolution ~ 1-2 s • detectionlimit ~ 10 pptv (10s) • online isotopiccalibrationusing34SO2 HALO: max. altitude ~15 km Falcon: max. altitude~12 km → 3 aircraftcampaigns(2010, 2012) → 10 aircraftcampaigns (2004 - 2012)

  3. Overview: SO2measurements (2004 – 2012) Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 In total: 13 fieldcampaigns ~ 480 flighthours

  4. In-situ SO2verticalprofiles: polar region & mid-latitudes Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 ASTAR Spitsbergen, April 2007 INTEX W Europe, May-June 2006 DC3 Kansas (USA), May 2012 Norilsk smelter ~2500 kT/y (Fioletov et al., 2013) WCB outflow (NA, Asia) BB (New Mexico) Norilsk smelter * Asian emissions - WCB outflow * ~2500 kT/y, Fioletovet al., 2013

  5. In-situ SO2verticalprofiles: tropics Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 TROCCINOX Brasil, Feb-Mar 2005 SCOUT N Australia, Nov-Dec 2005 AMMA West Africa, July 2006 coppersmelters& deg. volcanoes* * ~4000 kT/y, Fioletovet al., 2013

  6. SO2verticalprofiles: in-situ measurements & EMAC model Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 TROCCINOX Brasil, Feb-Mar 2005 SCOUT N Australia, Nov-Dec 2005 AMMA West Africa, July 2006 EMAC: Jöckel et al., GMD, 2010

  7. SO2distributionataltitudesbetween 8 – 12 km Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 5°x5° bins

  8. SO2distributionataltitudesbetween 8 – 12 km Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 volcano„Kasatochi“ (Jurkat et al., 2010) Asian emissions (Fiedler, 2008) + 5°x5° bins Canadian biomass burning Indonesian biomassburning MCS outflow (Fiedler, 2008)

  9. SO2distributionataltitudesbetween 12 – 15km Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 5°x5° bins SO2typically ~10-30 pptv → In goodagreementwith MIPAS observations (Höpfner et al., ACPD, 2013) AsianMonsoonoutflow in Tropical Easterly Jet AsianMonsoonoutflow in Tropical Easterly Jet

  10. SO2 in-situ observations in Asian Monsoonoutflow O3 EMAC analysis SO2 CO

  11. SO2 in-situ observations in Asian Monsoonoutflow Roiger, A.> Aircraftmeasurementsof SO2 > SSiRC Workshop > 29.10.2013 ESMValflight 18 Sep 2012: Male – Larnaca Hysplitbackwardtrajectories

  12. Outlook: Future SO2measurements • SO2measurementsonboardHALO • (ACCRIDON, OMO – Asia) • SO2measurementsonboardGeophysica M55 (StratoCLIM, summer 2015/2016) → Expected SO2mixingratios: ~10-15 pptv → CIMS instrumenttobeintegratedin MIPAS dome Höpfner et al., ACPD, 2013

  13. Outlook: Future SO2measurementsonboardGeophysica • Challenges • lowdetectionlimitneeded (tobeimprovedby a factorof 2 – 5) → zerobaselinedeterminationimportant • lowpressure, automatization • Achievements • First detailed in-situ SO2measurementsabove 15km (between 15 - 20km onlyonesingleobservationreporting SO2estimates) • Horizontal andverticalvariabilityof SO2 → indicationsoffreshinjections? • In combinationwithsimultaneous H2SO4measurementsestimatesof OH possible

More Related