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Contributions from TES and OMI to tropospheric chemistry and air quality: a retrospective Daniel J. Jacob.

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Presentation on theme: "Contributions from TES and OMI to tropospheric chemistry and air quality: a retrospective Daniel J. Jacob."— Presentation transcript:

1 Contributions from TES and OMI to tropospheric chemistry and air quality: a retrospective Daniel J. Jacob

2 Aura 10 th anniversary media day (June 22, 2014, NASA/GSFC): OMI NO 2 US trends go viral Russ Dickerson, Anne Thompson, Bryan Duncan

3 OMI NO 2, summer 2005 NO 2 is indicator of nitrogen oxide (NO x ) emissions Russell et al. [2012] NO x combines with hydrocarbons to produce surface ozone

4 OMI NO 2, summer 2005 OMI NO 2, summer 2011 NO 2 is indicator of nitrogen oxide (NO x ) emissions NO x combines with hydrocarbons to produce surface ozone 30% decrease in NO x emissions from 2005 to 2011 Russell et al. [2012]

5 Lenticular of OMI NO 2 trends (Bryan Duncan, GSFC)

6 OMI formaldehyde (HCHO) shows dominance of trees as sources of hydrocarbons in the US Millet et al. [2008] OMI formaldehyde JJA 2006 OMI HCHO data quantify biogenic emissions of isoprene

7 Oversampling of OMI HCHO data identifies anthropogenic sources of ethene and propene Zhu et al. [2014] OMI HCHO JJA 2006 Blown-up scale May-Aug 2005-2008 Emissions from Houston are 5x higher than EPA inventory

8 Decline of US sulfur doxide (SO 2 ) emissions seen by OMI OMI SO 2 Fioletov et al. [2011] SO 2 is the principal source of particulate pollution, haze, acid rain 2005-2007 2008-2010

9 OMI detects increasing emissions from Canadian oil sands Oil sand recovery In Alberta OMI NO 2, 2004-2010 NO 2 increase of 10% per year McLinden et al. [GRL 2012]

10 Trends in European NO x emissions seen from OMI 2006 2007 Castellanos and Boersma [2012] 2005 NO 2 2008 2009 2010 fractional decrease relative to 2005

11 fractional decrease since 2005 Trends in European NO x emissions seen from OMI Continuous reduction (2004-2010): -2% to -5% Recession Change (2008-2009): -15% to -30% Castellanos and Boersma [2012] 2005 NO 2 2008

12 Using OMI to constrain NO x emissions from ships OMI top down inventory (1.0 Tg N/yr) Vinken et al. {2014] Exclude data with continental influence Derive top-down emissions using forward model with ship plume chemistry

13 A global view of air pollution enabled by satellites http://disc.sci.gsfc.nasa.gov/giovanni OMI NO 2 2013 10 15 molecules cm -2 Aura observations have provided unprecedented detail, coverage, precision

14 A global view of air pollution enabled by satellites Verstraeten et al. [2014] OMI NO 2 2013 10 15 molecules cm -2 s -1 Aura observations have provided unprecedented detail, coverage, precision OMI NO 2 trend 2005-2010 fractional change

15 TES on Aura: first direct tropospheric ozone data from space Reveals mid-latitude pollution belt, global influence from tropical fires Ozone, ppbv Jun-Aug 2006 Sep-Nov 2006 Zhang et al. [2010] Ozone at 5 km altitude wind

16 Better understanding of tropical tropospheric ozone from TES Oct 2006 – Oct 2005 Ozone downwind of recent lightning, July 2006 Difference between Oct 2006 (El Nino) and Oct 2005 ozone and CO Jourdain et al. [2007], Logan et al. [2008], Choi et al. [2009], Nassar et al. [2009]

17 TES relationship of ozone and carbon monoxide (CO) at 5 km: Demonstrating the intercontinental transport of ozone pollution at mid-latitudes July 2005 Zhang et al. [2006] Carbon monoxide (pppbv) TES Ozone (ppb) CO [ppb] TES GEOS-Chem model offshore Eastern US offshore East Asia Carbon monoxide (CO) July 2005

18 TES shows how increase in Chinese NO x emissions drives increase in free tropospheric ozone Fractional change in OMI NO 2 since 2005 Verstraeten et al. [2014] TES ozone (ppb) Models China Western US 2005 2011 90 40 90 Chinese polllution is transported across Pacific wind

19 SO 2 emission trends in China Fioletov et al. [2013] OMI SO 2, 2005-2007 2008-2010 Don’t attribute climate hiatus to rising SO 2 emissions in China! It ain’t so...

20 New air pollution frontier: India OMI reveals rapid growth in SO 2 emissions from coal use Lu et al. [2013]

21 OMI formaldehyde 2005-2009 Densely populated, high GDP – oil! Large uncontrolled hydrocarbon emissions Large NO x emissions from seasonal fires Suppressed ventilation in December-February gas flaring! 10 15 molecules cm -2 OMI NO 2 Open fires OMI formaldehyde Gas leaks, flaring TES ozone at 2 km (Dec-Feb): High ozone from urban/gas/fire mix pollution fires high ozone New air pollution frontier: Nigeria VERY SEVERE OZONE POLLUTION Marais et al. [2014]

22 OMI constrains urban OH chemistry: Ryadh plume OMI NO 2 summer 2005 [OH] = 7.6x10 6 cm -3 [OH] = 5.2x10 6 cm -3 NO x lifetime 5.5-8h Valin et al. [2013]

23 New TES products: ammonia, methanol, PAN Fraction of TES observations where upper tropospheric PAN > 200 pptv April 2008 July 2008 Peroxyacetylnitrate (PAN) is a major reservoir for NO x Zhe Jiang, Vivienne Payne (in prep.)

24 New OMI product: glyoxal DJF 2007 Glyoxal HCHO JJA 2007 Correlation with HCHO over US indicates common isoprene source: constraint on oxidation mechanism? Hot spot in Pearl River Detla: anthropogenic aromatics Chris Miller (ACPD 2014, in prep)

25 Looking forward to another decade of Aura serving atmospheric chemistry research!


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