Delaying precipitation and lightning by air pollution over the Pearl River Delta. Part I: Observational analyses

The radiative and microphysical effects of aerosols can affect the development of convective clouds. The objective of this study is to reveal if the overall aerosol effects have any discernible impact on the diurnal variations in precipitation and lightning by means of both observational analysis and modeling. As the first part of two companion studies, this paper is concerned with analyzing hourly PM10, precipitation, and lightning data collected during the summers of 2008–2012 in the Pearl River Delta region. Daily PM10 data were categorized as clean, medium, or polluted so that any differences in the diurnal variations in precipitation and lightning could be examined. Heavy precipitation and lightning were found to occur more frequently later in the day under polluted conditions than under clean conditions. Analyses of the diurnal variations in several meteorological factors such as air temperature, vertical velocity, and wind speed were also performed. They suggest that the influence of aerosol radiative and microphysical effects serve to suppress and enhance convective activities, respectively. Under heavy pollution conditions, the reduction in solar radiation reaching the surface delays the occurrence of strong convection and postpones heavy precipitation to late in the day when the aerosol invigoration effect more likely comes into play. Although the effect of aerosol particles can be discernible on the heavy precipitation through the daytime, the influence of concurrent atmospheric dynamics and thermodynamics cannot be ruled out.

[1]  Ilan Koren,et al.  From aerosol-limited to invigoration of warm convective clouds , 2014, Science.

[2]  C. Saunders,et al.  The effect on thunderstorm charging of the rate of rime accretion by graupel , 1997 .

[3]  E. Williams,et al.  Density of rime in laboratory simulations of thunderstorm microphysics and electrification , 1996 .

[4]  M. Andreae,et al.  Smoking Rain Clouds over the Amazon , 2004, Science.

[5]  J. Comstock,et al.  Dominant role by vertical wind shear in regulating aerosol effects on deep convective clouds , 2009 .

[6]  N. Draper,et al.  Applied Regression Analysis: Draper/Applied Regression Analysis , 1998 .

[7]  C. Lin,et al.  Precipitation from vertical motion: a statistical diagnostic scheme , 2003 .

[8]  J. Prospero,et al.  Aerosol-Induced Large-Scale Variability in Precipitation over the Tropical Atlantic , 2009 .

[9]  Zhanqing Li,et al.  Long-term impacts of aerosols on the vertical development of clouds and precipitation , 2011 .

[10]  L. Remer,et al.  Observational evidence of aerosol enhancement of lightning activity and convective invigoration , 2011 .

[11]  C. O'Dowd,et al.  Flood or Drought: How Do Aerosols Affect Precipitation? , 2008, Science.

[12]  Joseph D Conklin,et al.  Applied Logistic Regression:Applied Logistic Regression , 2002 .

[13]  P. Stier,et al.  Satellite observations of cloud regime development: the role of aerosol processes , 2013 .

[14]  B. Basu.  Diurnal Variation in Precipitation over India during the Summer Monsoon Season: Observed and Model Predicted , 2007 .

[15]  W. Cotton,et al.  Aerosol Pollution Impact on Precipitation , 2009 .

[16]  D. J. Latham,et al.  An explanation for anomalous lightning from forest fire clouds , 1995 .

[17]  Paul Berrisford,et al.  Towards a climate data assimilation system: status update of ERA-interim , 2008 .

[18]  Jianjun Liu,et al.  Systematic Changes in Cloud Radiative Forcing with Aerosol Loading for Deep Clouds in the Tropics , 2016 .

[19]  H. Che,et al.  Spatio-temporal variation trends of satellite-based aerosol optical depth in China during 1980-2008 , 2011 .

[20]  Leopold Haimberger,et al.  Toward Elimination of the Warm Bias in Historic Radiosonde Temperature Records—Some New Results from a Comprehensive Intercomparison of Upper-Air Data , 2008 .

[21]  Nelson,et al.  Enhanced positive cloud-to-ground lightning in thunderstorms ingesting smoke from fires , 1998, Science.

[22]  Yuan Wang,et al.  Long-term impacts of aerosols on precipitation and lightning over the Pearl River Delta megacity area in China , 2011 .

[23]  Chuntao Liu,et al.  Diurnal Variations of Global Thunderstorms and Electrified Shower Clouds and Their Contribution to the Global Electrical Circuit , 2010 .

[24]  An unexpected pattern of distinct weekly periodicities in climatological variables in Germany , 2007 .

[25]  Jean-Jacques Morcrette,et al.  Influence of aerosol climatology on forecasts of the African Easterly Jet , 2005 .

[26]  Yan Shen,et al.  A high spatiotemporal gauge‐satellite merged precipitation analysis over China , 2014 .

[27]  Weixin Xu,et al.  Diurnal Variations of Precipitation, Deep Convection, and Lightning over and East of the Eastern Tibetan Plateau , 2011 .

[28]  Jeffrey S. Reid,et al.  A conceptual model for the link between Central American biomass burning aerosols and severe weather over the south central United States , 2009 .

[29]  Menghua Wang,et al.  Uncertainties in satellite remote sensing of aerosols and impact on monitoring its long-term trend: a review and perspective , 2009 .

[30]  M. Chin,et al.  Global observations of aerosol‐cloud‐precipitation‐climate interactions , 2014 .

[31]  N. Draper,et al.  Applied Regression Analysis , 1966 .

[32]  Alexander Khain,et al.  The Role of Sea Spray in Cleansing Air Pollution over Ocean via Cloud Processes , 2002, Science.

[33]  Kelly Chance,et al.  Global partitioning of NOx sources using satellite observations: relative roles of fossil fuel combustion, biomass burning and soil emissions. , 2005, Faraday discussions.

[34]  Qi Hu,et al.  Quality control of daily meteorological data in China, 1951–2000: a new dataset , 2004 .

[35]  J. Thepaut,et al.  The ERA‐Interim reanalysis: configuration and performance of the data assimilation system , 2011 .

[36]  Daniel Rosenfeld,et al.  Quantifying Precipitation Suppression Due to Air Pollution , 2004 .

[37]  Ilan Koren,et al.  Measurement of the Effect of Amazon Smoke on Inhibition of Cloud Formation , 2004, Science.

[38]  F. Goutail,et al.  Lightning-produced NO 2 observed by two ground-based UV-visible spectrometers at Vanscoy, Saskatchewan in August 2004 , 2006 .

[39]  Lawrence D. Carey,et al.  The Relationship between Precipitation and Lightning in Tropical Island Convection: A C-Band Polarimetric Radar Study , 2000 .

[40]  Zhanqing Li,et al.  Impact of aerosols on convective clouds and precipitation , 2012, Reviews of Geophysics.

[41]  S. Rutledge,et al.  Simultaneous influences of thermodynamics and aerosols on deep convection and lightning in the tropics , 2015 .

[42]  C. Price,et al.  Lightning response to smoke from Amazonian fires , 2010 .

[43]  G. Raga,et al.  High lightning activity in maritime clouds near Mexico , 2012 .

[44]  Yuqing Wang,et al.  Effects of vertical wind shear on intensity and rainfall asymmetries of strong Tropical Storm Bilis (2006) , 2008 .

[45]  Li Dan,et al.  Trends in the different grades of precipitation over South China during 1960–2010 and the possible link with anthropogenic aerosols , 2014, Advances in Atmospheric Sciences.

[46]  Edward J. Zipser,et al.  Diurnal cycles of precipitation, clouds, and lightning in the tropics from 9 years of TRMM observations , 2008 .

[47]  Yaping Du,et al.  Performance of TOA/DF Lightning Location Network in China — Site errors and detection efficiency , 2011, 2011 7th Asia-Pacific International Conference on Lightning.

[48]  Zhanqing Li,et al.  Increases in thunderstorm activity and relationships with air pollution in southeast China , 2014 .

[49]  H. Christian.  Global Frequency and Distribution of Lightning as Observed From Space , 2001 .

[50]  F. Fujibe.  Diurnal Variation in the Frequency of Heavy Precipitation in Japan , 1999 .

[51]  T. Bell,et al.  Weekly cycle of lightning: Evidence of storm invigoration by pollution , 2009 .

[52]  M. Baker,et al.  Mechanism of charge transfer between colliding ice particles in thunderstorms , 1994 .

[53]  R. Martin,et al.  Vertical profiles of lightning-produced NO(2) enhancements in the upper troposphere observed by OSIRIS , 2007 .

[54]  Chuntao Liu,et al.  An Investigation of the Aerosol Indirect Effect on Convective Intensity Using Satellite Observations , 2014 .

[55]  J. Ziemke,et al.  Aerosol indirect effect on tropospheric ozone via lightning , 2012 .

[56]  David M. Winker,et al.  Mesoscale Variations of Tropospheric Aerosols , 2003 .

[57]  Y. Qian,et al.  More frequent cloud‐free sky and less surface solar radiation in China from 1955 to 2000 , 2005 .

[58]  John M. Wallace,et al.  Diurnal Variations in Precipitation and Thunderstorm Frequency over the Conterminous United States , 1975 .

[59]  Zhanqing Li,et al.  Microphysical effects determine macrophysical response for aerosol impacts on deep convective clouds , 2013, Proceedings of the National Academy of Sciences.

[60]  T. Bell,et al.  Reply to comment by S. E. Yuter et al. on “Why do tornados and hailstorms rest on weekends?” , 2011 .

[61]  B. Albrecht.  Aerosols, Cloud Microphysics, and Fractional Cloudiness , 1989, Science.

[62]  Lorraine A. Remer,et al.  Aerosol-induced intensification of rain from the tropics to the mid-latitudes , 2012 .

[63]  Lorraine A. Remer,et al.  The invigoration of deep convective clouds over the Atlantic: aerosol effect, meteorology or retrieval artifact? , 2010 .

[64]  E. R. Jayaratne.  The Heat Balance of a Riming Graupel Pellet and the Charge Separation during Ice–Ice Collisions , 1993 .

[65]  Tsutomu Takahashi,et al.  Riming Electrification as a Charge Generation Mechanism in Thunderstorms , 1978 .

[66]  Steven Businger,et al.  Relationships among Lightning, Precipitation, and Hydrometeor Characteristics over the North Pacific Ocean* , 2009 .

[67]  M. Andreae.  Correlation between cloud condensation nuclei concentration and aerosol optical thickness in remote and polluted regions , 2008 .

[68]  Lorraine A. Remer,et al.  Smoke Invigoration Versus Inhibition of Clouds over the Amazon , 2008, Science.

[69]  Tianjun Zhou,et al.  Relation between rainfall duration and diurnal variation in the warm season precipitation over central eastern China , 2007 .

[70]  Cynthia H. Twohy,et al.  Effect of changes in relative humidity on aerosol scattering near clouds , 2008 .

[71]  R. O’Brien,et al.  A Caution Regarding Rules of Thumb for Variance Inflation Factors , 2007 .

[72]  A. Pokrovsky,et al.  Possible Aerosol Effects on Lightning Activity and Structure of Hurricanes , 2008 .

[73]  Syarif Hidayat,et al.  Diurnal Variation of Lightning Characteristics Around Java Island , 1999 .

[74]  S. Twomey.  The Influence of Pollution on the Shortwave Albedo of Clouds , 1977 .

[75]  E. Williams,et al.  Mixed-Phase Microphysics and Cloud Electrification. , 1991 .

[76]  P. Prikryl,et al.  The influence of solar wind on extratropical cyclones – Part 1: Wilcox effect revisited , 2009 .

[77]  Thomas Jung,et al.  Understanding the local and global impacts of model physics changes: an aerosol example , 2008 .

[78]  E. J. Llewellyn,et al.  Vertical profiles of lightning-produced NO 2 enhancements in the upper troposphere observed by OSIRIS , 2007 .

[79]  Kuolin Hsu,et al.  Diurnal Variability of Tropical Rainfall Retrieved from Combined GOES and TRMM Satellite Information , 2002 .

[80]  C. Saunders.  Thunderstorm electrification laboratory experiments and charging mechanisms , 1994 .

[81]  Ulrich Schumann,et al.  The global lightning-induced nitrogen oxides source , 2007 .

[82]  J. Seinfeld,et al.  Atmospheric Chemistry and Physics: From Air Pollution to Climate Change , 1997 .

[83]  Seoung-Soo Lee.  Effect of Aerosol on Circulations and Precipitation in Deep Convective Clouds , 2012 .

[84]  J. Slingo.  The Development and Verification of A Cloud Prediction Scheme For the Ecmwf Model , 2007 .

[85]  G. Luderer,et al.  The Chisholm firestorm: observed microstructure, precipitation and lightning activity of a pyro-cumulonimbus , 2006 .

[86]  D. Rosenfeld.  TRMM observed first direct evidence of smoke from forest fires inhibiting rainfall , 1999 .

[87]  Dong L. Wu,et al.  Intensification of Pacific storm track linked to Asian pollution , 2007, Proceedings of the National Academy of Sciences.

[88]  J. Thornton,et al.  Daily and intraseasonal relationships between lightning and NO2 over the Maritime Continent , 2011 .

[89]  Qiang Li,et al.  Meteorological conditions for the persistent severe fog and haze event over eastern China in January 2013 , 2013, Science China Earth Sciences.

[90]  T. L’Ecuyer,et al.  Observations of aerosol‐induced convective invigoration in the tropical east Atlantic , 2014 .

[91]  Zhanqing Li,et al.  Diurnal variation and the influential factors of precipitation from surface and satellite measurements in Tibet , 2014 .

[92]  Richard L. Thompson,et al.  Effective Storm-Relative Helicity and Bulk Shear in Supercell Thunderstorm Environments , 2007 .

[93]  Zhanqing Li,et al.  Precipitation and air pollution at mountain and plain stations in northern China: Insights gained from observations and modeling , 2014 .

[94]  Eldo E. Ávila,et al.  The effect of the cloud‐droplet spectrum on electrical‐charge transfer during individual ice‐ice collisions , 1999 .

[95]  C. Bretherton,et al.  On the Relationship between Stratiform Low Cloud Cover and Lower-Tropospheric Stability , 2006 .