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

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

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

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]

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

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

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 Emissions from Houston are 5x higher than EPA inventory

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

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

Trends in European NO x emissions seen from OMI Castellanos and Boersma [2012] 2005 NO fractional decrease relative to 2005

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

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

A global view of air pollution enabled by satellites OMI NO molecules cm -2 Aura observations have provided unprecedented detail, coverage, precision

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

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

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]

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

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 Chinese polllution is transported across Pacific wind

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

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

OMI formaldehyde Densely populated, high GDP – oil! Large uncontrolled hydrocarbon emissions Large NO x emissions from seasonal fires Suppressed ventilation in December-February gas flaring! 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]

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]

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.)

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)

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