Rapid intercontinental air pollution transport associated with a meteorological bomb

Intercontinental transport (ICT) of trace substances normally occurs on timescales ranging from a few days to several weeks. In this paper an extraordinary episode in November 2001 is presented, where pollution transport across the North Atlantic took only about one day. The transport mechanism, termed here an intercontinental pollution express highway because of the high wind speeds, was exceptional, as it involved an explosively generated cyclone, a so-called meteorological "bomb''. To the authors' knowledge, this is the first study describing pollution transport in a bomb. The discovery of this event was based on tracer transport model calculations and satellite measurements of NO 2 , a species with a relatively short lifetime in the atmosphere, which could be transported that far only because of the high wind speeds produced by the bomb. A 15-year transport climatology shows that intercontinental express highways are about four times more frequent in winter than in summer, in agreement with bomb climatologies. The climatology furthermore suggests that intercontinental express highways may be important for the budget of short-lived substances in the remote troposphere. For instance, for a substance with a lifetime of 1 day, express highways may be responsible for about two thirds of the total ICT. We roughly estimate that express highways connecting North America with Europe enhance the average NO x mixing ratios over Europe, due to North American emissions, by about 2-3 pptv in winter.

[1]  I. Simmonds,et al.  Explosive Cyclone Development in the Southern Hemisphere and a Comparison with Northern Hemisphere Events , 2002 .

[2]  Heini Wernli,et al.  Dynamical aspects of the life cycle of the winter storm ‘Lothar’ (24–26 December 1999) , 2002 .

[3]  O. Cooper,et al.  Trace gas composition of midlatitude cyclones over the western North Atlantic Ocean: A conceptual model , 2002 .

[4]  Colin Price,et al.  Vertical distributions of lightning NOx for use in regional and global chemical transport models , 1998 .

[5]  Lance M. Leslie,et al.  The Australian Boxing Day Storm of 1998—Synoptic Description and Numerical Simulations , 2000 .

[6]  Ulrich Platt,et al.  Differential optical absorption spectroscopy (DOAS) , 1994 .

[7]  A. Stohl,et al.  Validation of the lagrangian particle dispersion model FLEXPART against large-scale tracer experiment data , 1998 .

[8]  John P. Burrows,et al.  TROPOSPHERIC NO2 FROM GOME MEASUREMENTS , 2002 .

[9]  Remo Guidieri.  Res , 1995, RES: Anthropology and Aesthetics.

[10]  Keith A. Browning,et al.  The structure of rainbands within a mid-latitude depression , 1973 .

[11]  H. Schlager,et al.  Distributions of NO, NO x , and NO y in the upper troposphere and lower stratosphere between 28° and 61°N during POLINAT 2 , 2000 .

[12]  Brunner,et al.  Large-scale nitrogen oxide plumes in the tropopause region and implications for ozone , 1998, Science.

[13]  Stanley C. Solomon,et al.  On the interpretation of zenith sky absorption measurements , 1987 .

[14]  Y. Lemaitre,et al.  Dynamics of a ‘bomb‐like’ deepening secondary cyclone from airborne doppler radar , 1999 .

[15]  M. Lawrence,et al.  Intercontinental Transport of Pollution from North America to Europe: Airborne Trace Gas Measurements over Central and Northern Europe during CONTRACE , 2003 .

[16]  R. Harley,et al.  Decadal change in carbon monoxide to nitrogen oxide ratio in U.S. vehicular emissions , 2002 .

[17]  Bernd Jähne,et al.  Atmospheric Chemistry and Physics Discussions Interactive comment on “ High variability of the heterogeneous ice nucleation potential of oxalic acid dihydrate and sodium oxalate ” , 2001 .

[18]  Kerry Emanuel,et al.  Development and Evaluation of a Convection Scheme for Use in Climate Models , 1999 .

[19]  Bernd Jähne,et al.  Quantitative analysis of NO x emissions from Global Ozone Monitoring Experiment satellite image sequences , 2001 .

[20]  James E. Dye,et al.  A cloud‐scale model study of lightning‐generated NO x in an individual thunderstorm during STERAO‐A , 2000 .

[21]  A. Weinheimer,et al.  Sources and chemistry of NOx in the upper troposphere over the United States , 1998 .

[22]  A. Henderson-Sellers,et al.  The Climate System , 2019, Networks in Climate.

[23]  P. V. Velthoven,et al.  Airborne Measurements of NOx, Tracer Species, and Small Particles during the European Lightning Nitrogen Oxides Experiment , 2002 .

[24]  Yuhang Wang,et al.  Seasonal budgets of reactive nitrogen species and ozone over the United States, and export fluxes to the global atmosphere , 1998 .

[25]  B. Doddridge,et al.  Transport of ozone and pollutants from North America to the North Atlantic Ocean during the 1996 Atmosphere/Ocean Chemistry Experiment (AEROCE) intensive , 1999 .

[26]  Kenneth L. Cummins,et al.  A Combined TOA/MDF Technology Upgrade of the U.S. National Lightning Detection Network , 1998 .

[27]  A. Stohl,et al.  Export of NOy from the North American boundary layer during 1996 and 1997 North Atlantic Regional Experiments , 2002 .

[28]  Frank Arnold,et al.  A Backward Modeling Study of Intercontinental Pollution Transport using Aircraft Measurements , 2003 .

[29]  Stuart A. Penkett,et al.  Photochemical trajectory modeling studies of the North Atlantic region during August 1993 , 1996 .

[30]  Mark Lawrence,et al.  Global chemical weather forecasts for field campaign planning: predictions and observations of large-scale features during MINOS, CONTRACE, and INDOEX , 2002 .

[31]  Ulla Wandinger,et al.  Transport of boreal forest fire emissions from Canada , 2001 .

[32]  James F. Gleason,et al.  An improved retrieval of tropospheric nitrogen dioxide from GOME , 2002 .

[33]  Vladimir V. Rozanov,et al.  GOMETRAN: A radiative transfer model for the satellite project GOME, the plane-parallel version , 1997 .

[34]  David P. Baumhefner,et al.  Ensemble simulations of explosive cyclogenesis at ranges of 2-5 days , 2000 .

[35]  Yongti Zhu,et al.  Atmospheric rivers and bombs , 1994 .

[36]  Stephen Burt,et al.  THE GREAT STORM OF 15–16 OCTOBER 1987 , 1988 .

[37]  A. Stohl.  A 1-year Lagrangian ``climatology'' of airstreams in the Northern Hemisphere troposphere and lowermost stratosphere , 2001 .

[38]  Paul S. Monks,et al.  Potential for photochemical ozone formation in the troposphere over the North Atlantic as derived from aircraft observations during ACSOE , 2002 .

[39]  Klaus Pfeilsticker,et al.  Global tropospheric NO2 column distributions' Comparing three-dimensional model calculations with GOME , 2001 .

[40]  J. Penner,et al.  NOx from lightning 1. Global distribution based on lightning physics , 1997 .

[41]  S. Smyth,et al.  Observed distributions of nitrogen oxides in the remote free troposphere from the Nasa Global Tropospheric Experiment Programs , 2000 .

[42]  J. Burrows,et al.  Tropospheric NO 2 columns: a comparison between model and retrieved data from GOME measurements , 2001 .

[43]  Toby N. Carlson,et al.  Mid-Latitude Weather Systems , 1991 .

[44]  K. Cummins,et al.  Combined Satellite- and Surface-Based Estimation of the Intracloud Cloud-to-Ground Lightning Ratio over the Continental United States , 2001 .

[45]  B. Hoskins,et al.  New perspectives on the Northern Hemisphere winter storm tracks , 2002 .

[46]  F. Sanders,et al.  Synoptic-Dynamic Climatology of the “Bomb” , 1980 .

[47]  D. Thomson,et al.  A Density Correction for Lagrangian Particle Dispersion Models , 1999 .

[48]  John P. Burrows,et al.  First comparison of tropospheric NO2 column densities retrieved from GOME measurements and in situ aircraft profile measurements , 2002 .

[49]  J. Staehelin,et al.  Measurements of nitrogen oxides at the tropopause: Attribution to convection and correlation with lightning , 2000 .

[50]  Uwe Ulbrich,et al.  Three extreme storms over Europe in December 1999 , 2001 .

[51]  A. Stohl,et al.  On the pathways and timescales of intercontinental air pollution transport , 2002 .

[52]  P. Laroche,et al.  NO signatures from lightning flashes , 1999 .

[53]  S. Liu,et al.  On the nonlinearity of the tropospheric ozone production , 1988 .

[54]  Ulrich Platt,et al.  Satellite detection of a continental‐scale plume of nitrogen oxides from boreal forest fires , 2001 .

[55]  Itsushi Uno,et al.  Transport of Asian air pollution to North America , 1999 .

[56]  A. Stohl,et al.  A textbook example of long‐range transport: Simultaneous observation of ozone maxima of stratospheric and North American origin in the free troposphere over Europe , 1999 .

[57]  J. Burrows,et al.  TROPOSPHERIC NO 2 FROM GOME MEASUREMENTS , 2002 .

[58]  Michael Buchwitz,et al.  The Global Ozone Monitoring Experiment (Gome) : Mission, instrument concept, and first scientific results , 1997 .

[59]  Paul Roebber.  Statistical analysis and updated climatology of explosive cyclones , 1984 .