On the Relation Between the Large-Scale Tropospheric Circulation and Air Quality in Tehran


1 Ph.D. Student, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran

2 Associate Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran

3 Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran

4 Assistant Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran


The large-scale tropospheric circulation can play a controlling role in the accumulation and ventilation of air pollutants. It thus impacts air quality in large urban areas. This paper investigates the statistical relations between the dynamical indices related to circulation in the troposphere and visibility as a surrogate for air pollution in the urban area of Tehran for the climatological period of 1958 to 2013. The dynamical indices are based on jet splitting and Rossby wave breaking at the upper troposphere, eddy kinetic energy, meridional momentum flux, and static stability at the lower troposphere, as well as the high and low surface pressure disturbances. Despite the definite impact of surface pressure disturbances on visibility in Tehran, results show only very weak, if any, relation between the tropospheric circulation indices and visibility in Tehran. The absence of a robust relation is attributed to the slow response of the urban ventilation process to the time evolution of dynamical indices above the boundary layer and particularly at upper troposphere. The complex terrain of the region is likely the main factor creating the slow response.


Main Subjects

Adams, J. C. and Swarztrauber, P. N., 1999, SPHEREPACK 3.0: A model development facility. Monthly Weather Review, 127, 1872–1878.
Bals-Elsholz, T., Atallah, E., Bosart, L., Wasula, T., Cempa, M. and Lupo, A., 2001, The wintertime Southern Hemisphere split jet: Structure, variability, and evolution. Journal of Climate, 14, 4191–4215.
Baumer, D., Vogel, B., Versick, S., Rinke, R., Mohler, O. and Schnaiter, M., 2008, Relationship of visibility, aerosol optical thickness and aerosol size distribution in an ageing air mass over South-West Germany. Atmospheric Environment, 42, 989–998.
Bell, R.C. and Thompson, R.O.R.Y., 1980, Valley ventilation by cross winds. Journal of Fluid Mechanics, 96, 757–767.
Chang, D., Song, Y. and Liu, B., 2009, Visibility trends in six megacities in China 1973–2007. Atmospheric Environment, 94, 161–167.
Chang, E. K. M., Lee, S. and Swanson, K. L., 2002, Storm track dynamics. Journal of Climate, 15, 2163–2183.
Cooper, O., Moody, J., Parrish, D., Trainer, M., Holloway, J., Ryerson, T., Hubler, G., Fehsenfeld, F., Oltmans, S. and Evans, M., 2001, Trace gas signatures of the airstreams within North Atlantic cyclones: case studies from the North Atlantic Regional Experiment (NARE’97) aircraft intensive. Journal of Geophysical Research, 106, 5437–5456.
Craig, C. D. and Faulkenberry, G. D., 1979, The application of ridit analysis to detect trends in visibility. Atmospheric Environment, 13, 1617–1622.
Dagsson-Waldhauserova, P., Arnalds, O. and Olafsson, H., 2013, Long-term frequency and characteristics of dust storm events in Northeast Iceland (1949– 2011). Atmospheric Environment, 77, 117–127.
Demuzere, M., Trigo, R. M., Arellano, J. V. and van Lipzig, N. P. M., 2009, The impact of weather and atmospheric circulation on O3 and PM10 levels at a rural mid-latitude site. Atmos. Chem. Phys., 9, 2695–2714.
Deng, J., Du, K., Wang, K., Yuan, C. and Zhao, J., 2012, Long-term atmospheric visibility trend in Southeast China, 1973–2010. Atmospheric Environment, 59, 11–21.
Deng, X., Tie, X., Wu, D., Zhou, X., Bi, X., Tan, H., Li, F. and Jiang, C., 2008, Long-term trend of visibility and its characterizations in the Pearl River Delta (PRD) region, China. Atmospheric Environment, 42, 1424–1435.
Dharshana, K. G. T., Kravtsov, S. and Kahl, J.D.W., 2010, Relationship between synoptic weather disturbances and particulate matter air pollution over the United States. Journal of Geophysical Research, 115, D24219.
Doyle, M. and Dorling, S., 2002, Visibility trends in the UK 1950-1997. Atmospheric Environment, 36, 3161–3172.
Duchon, C. E., 1979, Lanczos filter in one and two dimensions. Journal of Applied Meteorology, 18, 1016–1022.
Forkel, R. and Knoche, R., 2006, Regional climate change and its impact on photo oxidant concentrations in southern Germany: Simulations with a coupled regional chemistry–climate model. Journal of Geophysical Research, 111, D12302.
Gultepe, I. and Milbrandt, J., 2009, Probabilistic parameterizations of visibility using observations of rain, precipitation rate, relative humidity, and visibility. Journal of Applied Meteorology and Climatology, 49, 34–46.
Hafezi, M., Rezaeimanesh, M., Mohebalhojeh, A., Bidokhti, A. A. and Nasr- Esfahany, M., 2015, Application of the split flow and Rossby-wave breaking indices to study critical air pollution episodes in Tehran during Nov. and Dec. 2010. Iranian Journal of Geophysics, 9, 134–149.
Haynes, P. and McIntyre, M., 1987, On the evolution of vorticity and potential vorticity in the presence of diabatic heating and other forces. Journal of the Atmospheric Sciences, 44, 828–841.
Hoskins, B., McIntyre, M. and Robertson, A., 1985, On the use and significance of isentropic potential vorticity maps. Quarterly Journal of the Royal Meteorological Society, 111, 877–946.
Husar, R. B., Holloway, J. M., Poll, D. E. and Wilson, W. E., 1981, Spatial and temporal pattern of eastern US haziness: a summary. Atmospheric Environment, 15, 1919–1928.
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Leetmaa, A., Reynolds, B., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Jenne, R. and Joseph, D., 1996, The ncep/ncar 40-year reanalysis project. Bulletin of the American Meteorological Society, 77, 437–472.
Lambert, S. and Fyfe, J., 2006, Changes in winter cyclone frequencies and strengths simulated in enhanced greenhouse warming experiments: results from the models participating in the IPCC diagnostic exercise. Climate Dynamics, 26, 713–728.
Leibensperger, E., Mickley, L. and Jacob, D., 2008, Sensitivity of U.S. air quality to midlatitude cyclone frequency and implications of 1980–2006 climate change. Atmospheric Chemistry and Physics, 8, 7075–7086.
Li, Q., Jacob, D., Park, R., Wang, Y., Heald, C., Hudman, R., Yantosca, R., Martin, R. and Evans, M., 2005, North American pollution outflow and the trapping of convectively lifted pollution by upper-level anticyclone. Journal of Geophysical Research, 110, D10301.
Liao, W., Wang, X., Fan, Q., Zhou, S., Chang, M., Wang, Z., Wang, Y. and Tu, Q., 2015, Long-term atmospheric visibility, sunshine duration and precipitation trends in South China. Atmospheric Environment, 107, 204–216.
Liu, H., Jacob, D. J., Bey, I., Yantosca, R. M., Duncan, B. N. and Sachse, G. W., 2003, Transport pathways for Asian combustion outflow over the Pacific: Interannual and seasonal variations. Journal of Geophysical Research, 108, D20.
Malm, W. C. and Day, D. E., 2001, Estimates of aerosol species scattering characteristics as a function of relative humidity. Atmospheric Environment, 35, 2845–2860.
Meehl, G. A., Stocker, T. F., Collins, W. D., Friedlingstein, P., Gaye, A. T., Gregory, J. M., Kitoh, A., Knutti, R., Murphy, J. M., Noda, A., Raper, S. B., Watterson, I. G., Weaver, A. J. and Zhao, Z. C., 2007, Global climate projections. In: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K.., Tignor, M., Miller, H.L. (Eds.), Climate Change 2007: The Physical Science Basis, Cambridge University Press, 747–846.
Mickley, L. J., Jacob, D. J., Field, B. D. and Rind, D., 2004, Effects of future climate change on regional air pollution episodes in the United States. Geophysical Research Letters, 30, L24103.
Molenar, A., Meszaros, E., Imre, K. and Rull, A., 2008, Trends in visibility over Hungary between 1996 and 2002. Atmospheric Environment, 42, 2621–2629.
Murazaki, K. and Hess, P., 2006, How does climate change contribute to surface ozone change over the United States? Journal of Geophysical Research, 111, D05301.
Ordonez, C., Mathis, H., Furger, M., Henne, S., Hoglin, C., Staehelin, J. and Prevot, A. S. H., 2005, Changes of daily surface ozone maxima in Switzer- land in all seasons from 1992 to 2002 and discussion of summer 2003. Atmospheric Chemistry and Physics, 5, 1187–1203.
Pearce, J. L., Beringer, J., Nicholls, N., Hyndman, R. J. and Tapper, N. J., 2011, Quantifying the influence of local meteorology on air quality using generalized additive models. Atmospheric Environment, 45, 1328–1336.
Pelly, J. and Hoskins, B. J., 2003, A new perspective on blocking. Journal of the Atmospheric Sciences, 60, 743–755.
Pope, R. J., Savage, N. H., Chipperfield, M. P., Arnold, S. R. and Osborn, T. J., 2014, The influence of synoptic weather regimes on UK air quality: analysis of satellite column NO2. Atmospheric Science Letters, 15, 211–217.
Pope, R. J., Savage, N. H., Chipperfield, M. P., Ordóñez, C. and Neal, L. S., 2015, The influence of synoptic weather regimes on UK air quality: regional model studies of tropospheric column NO2. Atmospheric Chemistry and Physics, 15, 11201–11215.
Pusheng, Z., Xiaoling, Z., Xiaofeng, X. and Xiujuan, Z., 2011, Long-term visibility trends and characteristics in the region of Beijing, Tianjin, and Hebei, China. Atmospheric Research, 101, 711–718.
Rohli, V. R., Russo, M. M., Vega, A. J. and Cole, J. B., 2004, Tropospheric ozone in Louisiana and synoptic circulation. J. Appl. Meteo. 43, 1438–1451.
Sabetghadam, S., Ahmadi-Givi, F. and Golestani, Y., 2012, Visibility trend in Tehran during 1958-2008. Atmospheric Environment, 35, 512–520.
Samet, J. and Krewski, D., 2007, Health effects associated with exposure to ambient air pollution. Journal of Toxicology and Environmental Health, Part A, 70, 227–242.
Seinfeld, J. H. and Pandis, S. N., 2006, Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, 2nd Edition. Wiley-Interscience.
Shen, L. and Mickley, L. J., 2017, Seasonal prediction of US summertime ozone using statistical analysis of large scale climate patterns. Journal of Geo- physical Research, 114, 2491–2496. 
Sisler, J. F. and Malm, W. C., 1994, The relative importance of soluble aerosoles to spatial and seasonal trends of impaired visibility in the United States. Atmospheric Environment, 28, 851–862.
Sloane, C. S., 1982a, Visibility trends — I, methods of analysis. Atmospheric Environment, 16, 41–51.
Sloane, C. S., 1982b, Visibility trends—II, Mideastern United States 1948–1878. Atmospheric Environment, 16, 2309–2321.
Sloane, C. S., 1984, Meteorologically adjusted air quality trends: visibility. Atmospheric Environment, 18, 1217–1229.
Tai, A.P.K., Mickley, L. J., Jacob, D. J., Leibensperger, E. M., Zhang, L., Fisher, J. A. and Pye, H.O.T., 2012, Meteorological modes of variability for fi particulate matter (PM2.5) air quality in the United States: implications for PM2.5 sensitivity to climate change. Atmospheric Chemistry and Physics, 12, 3131–3145.
Thorncroft, C. D., Hoskins, B. and McIntyre, M., 1993, Two paradigms of baroclinic wave life-cycle behavior. Quarterly Journal of the Royal Meteorological Society, 119, 877–946.
Webber, C. P., Dacre, H. F., Collins, W. J. and Masato, G., 2017, The dynamical impact of Rossby wave breaking upon UK PM10 concentration. Atmospheric Chemistry and Physics, 17, 867–881.
Wu, S., Mickley, L. J., Leibensperger, E. M., Jacob, D. J., Rind, D. and Streets, G., 2008, Effects of 2000–2050 global change on ozone air quality in the United States. Journal of Geophysical Research, 113, D06302.
Xiao, S., Wang, Q. Y., Cao, J. J., Huang, R. J., Chen, W. D., Han, Y. M., Xu, H. M., Liu, S. X., Zhou, Y. Q., Wang, P., Zhang, J. Q. and Zhan, C. L., 2014, Long-term trends in visibility and impacts of aerosol composition on visibility impairment in Baoji, China. Atmospheric Research, 149, 88–95.