Urbanization-induced urban heat island and aerosol effects on climate extremes in the Yangtze River Delta region of China
Abstract
Abstract. The WRF-Chem model coupled with a single-layer urban canopy model (UCM) is integrated for 5 years at convection-permitting scale to investigate the individual and combined impacts of urbanization-induced changes in land cover and pollutant emissions on regional climate in the Yangtze River Delta (YRD) region in eastern China. Simulations with the urbanization effects reasonably reproduced the observed features of temperature and precipitation in the YRD region. Urbanization over the YRD induces an urban heat island (UHI) effect, which increases the surface temperature by 0.53 °C in summer and increases the annual heat wave days at a rate of 3.7 d yr−1 in the major megacities in the YRD, accompanied by intensified heat stress. In winter, the near-surface air temperature increases by approximately 0.7 °C over commercial areas in the cities but decreases in the surrounding areas. Radiative effects of aerosols tend to cool the surface air by reducing net shortwave radiation at the surface. Compared to the more localized UHI effect, aerosol effects on solar radiation and temperature influence a much larger area, especially downwind of the city cluster in the YRD. Results also show that the UHI increases the frequency of extreme summer precipitation by strengthening the convergence and updrafts over urbanized areasmore »
- Authors:
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1353305
- Alternate Identifier(s):
- OSTI ID: 1356506
- Report Number(s):
- PNNL-SA-125598
Journal ID: ISSN 1680-7324
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Published Article
- Journal Name:
- Atmospheric Chemistry and Physics (Online)
- Additional Journal Information:
- Journal Name: Atmospheric Chemistry and Physics (Online) Journal Volume: 17 Journal Issue: 8; Journal ID: ISSN 1680-7324
- Publisher:
- Copernicus Publications, EGU
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; WRF-Chem; urban canopy model; UCM; Yangtze River Delta; YRD
Citation Formats
Zhong, Shi, Qian, Yun, Zhao, Chun, Leung, Ruby, Wang, Hailong, Yang, Ben, Fan, Jiwen, Yan, Huiping, Yang, Xiu-Qun, and Liu, Dongqing. Urbanization-induced urban heat island and aerosol effects on climate extremes in the Yangtze River Delta region of China. Germany: N. p., 2017.
Web. doi:10.5194/acp-17-5439-2017.
Zhong, Shi, Qian, Yun, Zhao, Chun, Leung, Ruby, Wang, Hailong, Yang, Ben, Fan, Jiwen, Yan, Huiping, Yang, Xiu-Qun, & Liu, Dongqing. Urbanization-induced urban heat island and aerosol effects on climate extremes in the Yangtze River Delta region of China. Germany. https://doi.org/10.5194/acp-17-5439-2017
Zhong, Shi, Qian, Yun, Zhao, Chun, Leung, Ruby, Wang, Hailong, Yang, Ben, Fan, Jiwen, Yan, Huiping, Yang, Xiu-Qun, and Liu, Dongqing. Thu .
"Urbanization-induced urban heat island and aerosol effects on climate extremes in the Yangtze River Delta region of China". Germany. https://doi.org/10.5194/acp-17-5439-2017.
@article{osti_1353305,
title = {Urbanization-induced urban heat island and aerosol effects on climate extremes in the Yangtze River Delta region of China},
author = {Zhong, Shi and Qian, Yun and Zhao, Chun and Leung, Ruby and Wang, Hailong and Yang, Ben and Fan, Jiwen and Yan, Huiping and Yang, Xiu-Qun and Liu, Dongqing},
abstractNote = {Abstract. The WRF-Chem model coupled with a single-layer urban canopy model (UCM) is integrated for 5 years at convection-permitting scale to investigate the individual and combined impacts of urbanization-induced changes in land cover and pollutant emissions on regional climate in the Yangtze River Delta (YRD) region in eastern China. Simulations with the urbanization effects reasonably reproduced the observed features of temperature and precipitation in the YRD region. Urbanization over the YRD induces an urban heat island (UHI) effect, which increases the surface temperature by 0.53 °C in summer and increases the annual heat wave days at a rate of 3.7 d yr−1 in the major megacities in the YRD, accompanied by intensified heat stress. In winter, the near-surface air temperature increases by approximately 0.7 °C over commercial areas in the cities but decreases in the surrounding areas. Radiative effects of aerosols tend to cool the surface air by reducing net shortwave radiation at the surface. Compared to the more localized UHI effect, aerosol effects on solar radiation and temperature influence a much larger area, especially downwind of the city cluster in the YRD. Results also show that the UHI increases the frequency of extreme summer precipitation by strengthening the convergence and updrafts over urbanized areas in the afternoon, which favor the development of deep convection. In contrast, the radiative forcing of aerosols results in a surface cooling and upper-atmospheric heating, which enhances atmospheric stability and suppresses convection. The combined effects of the UHI and aerosols on precipitation depend on synoptic conditions. Two rainfall events under two typical but different synoptic weather patterns are further analyzed. It is shown that the impact of urban land cover and aerosols on precipitation is not only determined by their influence on local convergence but also modulated by large-scale weather systems. For the case with a strong synoptic forcing associated with stronger winds and larger spatial convergence, the UHI and aerosol effects are relatively weak. When the synoptic forcing is weak, however, the UHI and aerosol effects on local convergence dominate. This suggests that synoptic forcing plays a significant role in modulating the urbanization-induced land-cover and aerosol effects on individual rainfall event. Hence precipitation changes due to urbanization effects may offset each other under different synoptic conditions, resulting in little changes in mean precipitation at longer timescales.},
doi = {10.5194/acp-17-5439-2017},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 8,
volume = 17,
place = {Germany},
year = {Thu Apr 27 00:00:00 EDT 2017},
month = {Thu Apr 27 00:00:00 EDT 2017}
}
https://doi.org/10.5194/acp-17-5439-2017
Web of Science
Works referenced in this record:
Detection of Urban-Induced Rainfall Anomalies in a Major Coastal City
journal, April 2003
- Shepherd, J. Marshall; Burian, Steven J.
- Earth Interactions, Vol. 7, Issue 4
Sulfur dioxide and primary carbonaceous aerosol emissions in China and India, 1996–2010
journal, January 2011
- Lu, Z.; Zhang, Q.; Streets, D. G.
- Atmospheric Chemistry and Physics, Vol. 11, Issue 18
Impact of urban expansion on regional temperature change in the Yangtze River Delta
journal, October 2007
- Du, Yin; Xie, Zhiqing; Zeng, Yan
- Journal of Geographical Sciences, Vol. 17, Issue 4
Radiative forcing and climate response
journal, March 1997
- Hansen, J.; Sato, M.; Ruedy, R.
- Journal of Geophysical Research: Atmospheres, Vol. 102, Issue D6
Simulation of St. Louis, Missouri, Land Use Impacts on Thunderstorms
journal, June 2003
- Rozoff, Christopher M.; Cotton, William R.; Adegoke, Jimmy O.
- Journal of Applied Meteorology, Vol. 42, Issue 6
Suppression of Rain and Snow by Urban and Industrial Air Pollution
journal, March 2000
- Rosenfeld, D.
- Science, Vol. 287, Issue 5459
Trends in Extreme Temperatures in Relation to Urbanization in the Twin Cities Metropolitan Area, Minnesota
journal, March 2009
- Sen Roy, Shouraseni; Yuan, Fei
- Journal of Applied Meteorology and Climatology, Vol. 48, Issue 3
Flood or Drought: How Do Aerosols Affect Precipitation?
journal, September 2008
- Rosenfeld, D.; Lohmann, U.; Raga, G. B.
- Science, Vol. 321, Issue 5894
Mechanism of Urbanization Impact on a Summer Cold-Frontal Rainfall Process in the Greater Beijing Metropolitan Area
journal, June 2015
- Zhong, Shi; Yang, Xiu-Qun
- Journal of Applied Meteorology and Climatology, Vol. 54, Issue 6
More frequent cloud-free sky and less surface solar radiation in China from 1955 to 2000: CLOUDS AND RADIATION IN CHINA
journal, January 2006
- Qian, Yun; Kaiser, Dale P.; Leung, L. Ruby
- Geophysical Research Letters, Vol. 33, Issue 1
Modeling the impact of urbanization on the local and regional climate in Yangtze River Delta, China
journal, March 2010
- Zhang, Ning; Gao, Zhiqiu; Wang, Xuemei
- Theoretical and Applied Climatology, Vol. 102, Issue 3-4
The integrated WRF/urban modelling system: development, evaluation, and applications to urban environmental problems
journal, January 2011
- Chen, Fei; Kusaka, Hiroyuki; Bornstein, Robert
- International Journal of Climatology, Vol. 31, Issue 2
Fully coupled “online” chemistry within the WRF model
journal, December 2005
- Grell, Georg A.; Peckham, Steven E.; Schmitz, Rainer
- Atmospheric Environment, Vol. 39, Issue 37
Impact of Two-Way Aerosol–Cloud Interaction and Changes in Aerosol Size Distribution on Simulated Aerosol-Induced Deep Convective Cloud Sensitivity
journal, April 2011
- Ekman, Annica M. L.; Engström, Anders; Söderberg, Anders
- Journal of the Atmospheric Sciences, Vol. 68, Issue 4
Mesoscale convective precipitation system modified by urbanization in Beijing City
journal, November 2006
- Guo, Xueliang; Fu, Danhong; Wang, Jing
- Atmospheric Research, Vol. 82, Issue 1-2
Notes on state-of-the-art investigations of aerosol effects on precipitation: a critical review
journal, January 2009
- Khain, A. P.
- Environmental Research Letters, Vol. 4, Issue 1
Urban-Rural Humidity Differences
journal, October 1975
- Hage, K. D.
- Journal of Applied Meteorology, Vol. 14, Issue 7
Urban effects on low-level clouds around the Tokyo metropolitan area on clear summer days: URBAN EFFECTS ON CLOUDS IN SUMMER
journal, March 2004
- Inoue, Tadao; Kimura, Fujio
- Geophysical Research Letters, Vol. 31, Issue 5
A Review of Current Investigations of Urban-Induced Rainfall and Recommendations for the Future
journal, July 2005
- Shepherd, J. Marshall
- Earth Interactions, Vol. 9, Issue 12
Radiative impact of mineral dust on monsoon precipitation variability over West Africa
journal, January 2011
- Zhao, C.; Liu, X.; Ruby Leung, L.
- Atmospheric Chemistry and Physics, Vol. 11, Issue 5
Precipitation-generated oscillations in open cellular cloud fields
journal, August 2010
- Feingold, Graham; Koren, Ilan; Wang, Hailong
- Nature, Vol. 466, Issue 7308
An investigation of the sub-grid variability of trace gases and aerosols for global climate modeling
journal, January 2010
- Qian, Y.; Gustafson, W. I.; Fast, J. D.
- Atmospheric Chemistry and Physics, Vol. 10, Issue 14
Urbanization Effects on Observed Surface Air Temperature Trends in North China
journal, March 2008
- Ren, Guoyu; Zhou, Yaqing; Chu, Ziying
- Journal of Climate, Vol. 21, Issue 6
The dependence of the urban heat island intensity on latitude A statistical approach [The dependence of the urban heat island intensity on latitude A statistical approach]
journal, October 2005
- Wienert, Uwe; Kuttler, Wilhelm
- Meteorologische Zeitschrift, Vol. 14, Issue 5
Development of a turbulence closure model for geophysical fluid problems
journal, January 1982
- Mellor, George L.; Yamada, Tetsuji
- Reviews of Geophysics, Vol. 20, Issue 4
Impacts of Urban Processes and Urbanization on Summer Precipitation: A Case Study of Heavy Rainfall in Beijing on 1 August 2006
journal, April 2011
- Miao, Shiguang; Chen, Fei; Li, Qingchun
- Journal of Applied Meteorology and Climatology, Vol. 50, Issue 4
Uncertainty in modeling dust mass balance and radiative forcing from size parameterization
journal, January 2013
- Zhao, C.; Chen, S.; Leung, L. R.
- Atmospheric Chemistry and Physics, Vol. 13, Issue 21
Measurement of the Effect of Amazon Smoke on Inhibition of Cloud Formation
journal, February 2004
- Koren, I.
- Science, Vol. 303, Issue 5662
Simulation of urban climate with high-resolution WRF model: A case study in Nanjing, China
journal, August 2012
- Yang, Ben; Zhang, Yaocun; Qian, Yun
- Asia-Pacific Journal of Atmospheric Sciences, Vol. 48, Issue 3
The Impact of Urbanization on Current and Future Coastal Precipitation: A Case Study for Houston
journal, April 2010
- Shepherd, J. Marshall; Carter, Michael; Manyin, Michael
- Environment and Planning B: Planning and Design, Vol. 37, Issue 2
Observed surface warming induced by urbanization in east China
journal, January 2011
- Yang, Xuchao; Hou, Yiling; Chen, Baode
- Journal of Geophysical Research, Vol. 116, Issue D14
Ensemble simulations of the urban effect on a summer rainfall event in the Great Beijing Metropolitan Area
journal, February 2015
- Zhong, Shi; Yang, Xiu-Qun
- Atmospheric Research, Vol. 153
Modeling the formation of secondary organic aerosol within a comprehensive air quality model system
journal, November 2001
- Schell, Benedikt; Ackermann, Ingmar J.; Hass, Heinz
- Journal of Geophysical Research: Atmospheres, Vol. 106, Issue D22
Asian emissions in 2006 for the NASA INTEX-B mission
journal, January 2009
- Zhang, Q.; Streets, D. G.; Carmichael, G. R.
- Atmospheric Chemistry and Physics, Vol. 9, Issue 14
A review of measurement-based assessments of the aerosol direct radiative effect and forcing
journal, January 2006
- Yu, H.; Kaufman, Y. J.; Chin, M.
- Atmospheric Chemistry and Physics, Vol. 6, Issue 3
Characterization of speciated aerosol direct radiative forcing over California: AEROSOL DIRECT RADIATIVE FORCING
journal, March 2013
- Zhao, Chun; Ruby Leung, L.; Easter, Richard
- Journal of Geophysical Research: Atmospheres, Vol. 118, Issue 5
Microphysical effects determine macrophysical response for aerosol impacts on deep convective clouds
journal, November 2013
- Fan, J.; Leung, L. R.; Rosenfeld, D.
- Proceedings of the National Academy of Sciences, Vol. 110, Issue 48
Climatological Assessment of Urban Effects on Precipitation at St. Louis
journal, August 1972
- Huff, F. A.; Changnon, S. A.
- Journal of Applied Meteorology, Vol. 11, Issue 5
Urban heat islands and summertime convective thunderstorms in Atlanta: three case studies
journal, February 2000
- Bornstein, Robert; Lin, Qinglu
- Atmospheric Environment, Vol. 34, Issue 3
A possible positive feedback of reduction of precipitation and increase in aerosols over eastern central China
journal, January 2006
- Zhao, Chunsheng; Tie, Xuexi; Lin, Yunping
- Geophysical Research Letters, Vol. 33, Issue 11
Analysis of 40 years of solar radiation data from China, 1961–2000
journal, January 2005
- Che, H. Z.
- Geophysical Research Letters, Vol. 32, Issue 6
The energetic basis of the urban heat island
journal, January 1982
- Oke, T. R.
- Quarterly Journal of the Royal Meteorological Society, Vol. 108, Issue 455
Modeling of land surface evaporation by four schemes and comparison with FIFE observations
journal, March 1996
- Chen, Fei; Mitchell, Kenneth; Schaake, John
- Journal of Geophysical Research: Atmospheres, Vol. 101, Issue D3
Aspects of heat-island development in Guadalajara, Mexico
journal, September 1992
- Jauregui, E.; Godinez, L.; Cruz, F.
- Atmospheric Environment. Part B. Urban Atmosphere, Vol. 26, Issue 3
The spatial distribution of mineral dust and its shortwave radiative forcing over North Africa: modeling sensitivities to dust emissions and aerosol size treatments
journal, January 2010
- Zhao, C.; Liu, X.; Leung, L. R.
- Atmospheric Chemistry and Physics, Vol. 10, Issue 18
Climate Forcing by Anthropogenic Aerosols
journal, January 1992
- Charlson, R. J.; Schwartz, S. E.; Hales, J. M.
- Science, Vol. 255, Issue 5043
The ion chemistry, seasonal cycle, and sources of PM2.5 and TSP aerosol in Shanghai
journal, May 2006
- Wang, Ying; Zhuang, Guoshun; Zhang, Xingying
- Atmospheric Environment, Vol. 40, Issue 16
Comments on “Urban, Topographic and Diurnal Effects on Rainfall in the St. Louis Region”
journal, March 1979
- Braham, Roscoe R.
- Journal of Applied Meteorology, Vol. 18, Issue 3
Radiative forcing by long-lived greenhouse gases: Calculations with the AER radiative transfer models
journal, January 2008
- Iacono, Michael J.; Delamere, Jennifer S.; Mlawer, Eli J.
- Journal of Geophysical Research, Vol. 113, Issue D13
Effects of aerosols on trade wind cumuli over the Indian Ocean: Model simulations
journal, April 2006
- McFarquhar, Greg M.; Wang, Hailong
- Quarterly Journal of the Royal Meteorological Society, Vol. 132, Issue 616
The trajectories of urban land and industrial land in Shanghai over the past 30 years
conference, May 2009
- zhang, Qian
- 2009 Joint Urban Remote Sensing Event
Substantial contribution of anthropogenic air pollution to catastrophic floods in Southwest China: AIR POLLUTION TO CATASTROPHIC FLOODS
journal, July 2015
- Fan, Jiwen; Rosenfeld, Daniel; Yang, Yan
- Geophysical Research Letters, Vol. 42, Issue 14
A Simple Single-Layer Urban Canopy Model For Atmospheric Models: Comparison With Multi-Layer And Slab Models
journal, December 2001
- Kusaka, Hiroyuki; Kondo, Hiroaki; Kikegawa, Yokihiro
- Boundary-Layer Meteorology, Vol. 101, Issue 3
Emissions of primary aerosol and precursor gases in the years 2000 and 1750 prescribed data-sets for AeroCom
journal, January 2006
- Dentener, F.; Kinne, S.; Bond, T.
- Atmospheric Chemistry and Physics, Vol. 6, Issue 12
Aerosol direct, indirect, semidirect, and surface albedo effects from sector contributions based on the IPCC AR5 emissions for preindustrial and present-day conditions: IPCC AR5 SECTOR EMISSIONS
journal, January 2012
- Bauer, Susanne E.; Menon, Surabi
- Journal of Geophysical Research: Atmospheres, Vol. 117, Issue D1
Evolution of ozone, particulates, and aerosol direct radiative forcing in the vicinity of Houston using a fully coupled meteorology-chemistry-aerosol model
journal, January 2006
- Fast, Jerome D.; Gustafson, William I.; Easter, Richard C.
- Journal of Geophysical Research, Vol. 111, Issue D21
Influences of urbanization on surface characteristics as derived from the Moderate-Resolution Imaging Spectroradiometer: A case study for the Beijing metropolitan area
journal, January 2007
- Wang, Kaicun; Wang, Jiankai; Wang, Pucai
- Journal of Geophysical Research, Vol. 112, Issue D22
Urbanization and heterogeneous surface warming in eastern China
journal, January 2013
- Wu, Kai; Yang, XiuQun
- Chinese Science Bulletin, Vol. 58, Issue 12
A time-split nonhydrostatic atmospheric model for weather research and forecasting applications
journal, March 2008
- Skamarock, William C.; Klemp, Joseph B.
- Journal of Computational Physics, Vol. 227, Issue 7
Impact of aerosols on convective clouds and precipitation: AEROSOL IMPACT ON CONVECTIVE CLOUDS
journal, April 2012
- Tao, Wei-Kuo; Chen, Jen-Ping; Li, Zhanqing
- Reviews of Geophysics, Vol. 50, Issue 2
Rainfall Changes in Summer Caused by St. Louis
journal, July 1979
- Changnon, S. A.
- Science, Vol. 205, Issue 4404
An operational heat/health warning system in shanghai
journal, February 2004
- Tan, Jianguo; Kalkstein, L. S.; Huang, Jiaxin
- International Journal of Biometeorology, Vol. 48, Issue 3
Urbanization-induced regional warming in Yangtze River Delta: potential role of anthropogenic heat release: ANTHROPOGENIC HEAT-CAUSED REGIONAL WARMING IN YANGTZE RIVER DELTA
journal, February 2015
- Wang, Xiaomei; Sun, Xuguang; Tang, Jianping
- International Journal of Climatology, Vol. 35, Issue 15
Effects of boundary-layer stability on urban heat island-induced circulation
journal, September 2006
- Baik, J. -J.; Kim, Y. -H.; Kim, J. -J.
- Theoretical and Applied Climatology, Vol. 89, Issue 1-2
Impact on modeled cloud characteristics due to simplified treatment of uniform cloud condensation nuclei during NEAQS 2004
journal, January 2007
- Gustafson, William I.; Chapman, Elaine G.; Ghan, Steven J.
- Geophysical Research Letters, Vol. 34, Issue 19
Climate Response to Rapid Urban Growth: Evidence of a Human-Induced Precipitation Deficit
journal, May 2007
- Kaufmann, Robert K.; Seto, Karen C.; Schneider, Annemarie
- Journal of Climate, Vol. 20, Issue 10
Impact of city belt in Yangtze River Delta in China on a precipitation process in summer: A case study
journal, May 2013
- Wan, Hongchao; Zhong, Zhong; Yang, Xiuqun
- Atmospheric Research, Vol. 125-126
Effect of Ship-Stack Effluents on Cloud Reflectivity
journal, August 1987
- Coakley, J. A.; Bernstein, R. L.; Durkee, P. A.
- Science, Vol. 237, Issue 4818
The trajectory of urbanization process in the Yangtze River delta during 1990 to 2005
conference, May 2009
- Yunfeng Hu, ; Zhang, Qian
- 2009 Joint Urban Remote Sensing Event
A numerical study of the effect of different aerosol types on East Asian summer clouds and precipitation
journal, May 2013
- Jiang, Yiquan; Liu, Xiaohong; Yang, Xiu-Qun
- Atmospheric Environment, Vol. 70
Impact of Cloud Microphysics on the Development of Trailing Stratiform Precipitation in a Simulated Squall Line: Comparison of One- and Two-Moment Schemes
journal, March 2009
- Morrison, H.; Thompson, G.; Tatarskii, V.
- Monthly Weather Review, Vol. 137, Issue 3
The impact of an urban dry island on the summer heat wave and sultry weather in Beijing City
journal, June 2010
- Wang, XiQuan; Gong, YanBang
- Chinese Science Bulletin, Vol. 55, Issue 16
The second generation regional acid deposition model chemical mechanism for regional air quality modeling
journal, January 1990
- Stockwell, William R.; Middleton, Paulette; Chang, Julius S.
- Journal of Geophysical Research, Vol. 95, Issue D10
Evaluation of Scalar Advection Schemes in the Advanced Research WRF Model Using Large-Eddy Simulations of Aerosol–Cloud Interactions
journal, August 2009
- Wang, Hailong; Skamarock, William C.; Feingold, Graham
- Monthly Weather Review, Vol. 137, Issue 8
Variability of solar radiation under cloud-free skies in China: The role of aerosols
journal, January 2007
- Qian, Yun; Wang, Weiguo; Leung, L. Ruby
- Geophysical Research Letters, Vol. 34, Issue 12
Microphysical Processes Evident in Aerosol Forcing of Tropical Deep Convective Clouds
journal, February 2013
- Storer, Rachel L.; van den Heever, Susan C.
- Journal of the Atmospheric Sciences, Vol. 70, Issue 2
Heavy pollution suppresses light rain in China: Observations and modeling
journal, January 2009
- Qian, Yun; Gong, Daoyi; Fan, Jiwen
- Journal of Geophysical Research, Vol. 114
Light-absorbing particles in snow and ice: Measurement and modeling of climatic and hydrological impact
journal, November 2014
- Qian, Yun; Yasunari, Teppei J.; Doherty, Sarah J.
- Advances in Atmospheric Sciences, Vol. 32, Issue 1
A case study of urbanization impact on summer precipitation in the Greater Beijing Metropolitan Area: Urban heat island versus aerosol effects: URBANIZATION IMPACT ON PRECIPITATION
journal, October 2015
- Zhong, Shi; Qian, Yun; Zhao, Chun
- Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 20
Effect of explicit urban land surface representation on the simulation of the 26 July 2005 heavy rain event over Mumbai, India
journal, January 2008
- Lei, M.; Niyogi, D.; Kishtawal, C.
- Atmospheric Chemistry and Physics, Vol. 8, Issue 20