Features of graded AOD in East China in association with East Asian summer monsoon anomalies
MA Fen-hua, GUAN Zhao-yong
Key Laboratory of Meteorological Disaster of Ministry of Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China
Using the data of the latest-released aerosol optical thickness (AOD) (Collection 6) as derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra spacecraft, the Final Operational Global Analysis data (NCEP FNL) from National Centers for Environmental Prediction, Climate Prediction Center (CPC) Merged Analysis of Precipitation (CMAP), CERES syn1deg Ed4monthly average data, NCEP/National Center for Atmospheric Research (NCAR) reanalysis data from March 2000 to February 2017, we have investigated the features of variations of graded AOD and their related circulation anomalies. As per the interannual variations of AOD averaged over the eastern part of China, the AOD is divided into 5 different levels, which corresponds to 5pollution grades. The results show that the anomalies of AOD in East China are larger when the surface wind speed is weaker together with the unfavorable aerosol diffusion condition of the anomalous monsoon circulation in the middle and high troposphere. When the aerosol pollution is strongest (weakest), variations of AOD is strongly related to the variations of the solar radiation at the earth surface, surface temperature, wind speed, and precipitation. At other AOD levels, the air pollution is significantly related to the surface solar radiation rather than other variables. When the air pollution is severe, the solar radiation at the earth surface is relatively lower, along with the lower surface temperature. The atmosphere in lower troposphere is cooling, and the wind speed is weakening. Meanwhile, the more precipitation occurs in the southern and less in the northern part of the eastern China. On the other hand, when the air pollution is very light, the solar radiation that reaches the earth surface will increase, and the surface air temperature gets higher. At this time, the surface wind will get stronger, and less precipitation will be received in the southern and more in the northern part of East China.
马奋华, 管兆勇. 中国东部AOD等级变化及与东亚夏季风的联系[J]. 中国环境科学, 2018, 38(9): 3201-3210.
MA Fen-hua, GUAN Zhao-yong. Features of graded AOD in East China in association with East Asian summer monsoon anomalies. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(9): 3201-3210.
Zhang X Y, Wang Y Q, Niu T, et al. Atmospheric aerosol compositions in China:Spatial/temporal variability, chemical signature, regional haze distribution and comparisons with global aerosols[J]. Atmospheric Chemistry & Physics, 2012,11:26571-26615.
Oanh N T K, et al. Particulate air pollution in six Asian cities:Spatial and temporal distributions, and associated sources[J]. Atmospheric Environment, 2006,40:3367-3380.
[8]
Novakov T, Kirchstetter T W, Sinton J E, et al. A. Large historical changes of fossil-fuel black carbon aerosols[J]. Geophysical Research Letters, 30:1324, doi:10.1029/2002GL016345,2003.
IPCC. Fifth Assessment Report, Climate Change 2013:The Physical Science Basis[R]. New York:Cambridge University Press, 2013.
[11]
Wang H J, Sun J Q, Chen H P, et al. Extreme climate in China:Facts, simulation and projection[J]. Meteorologische Zeitschrift, 2012, 21(3):279-304,doi:10.1127/0941-2948/2012/0330.
[12]
au K M W, Ramanathan V, Wu G X et al. The joint aerosol-monsoon experiment[J]. Bulletin of the American Meteorological society, 2008,89(3):369-383, DOI:10.1175/BAMS-89-3-369.
[13]
Lau K M W. The aerosol-monsoon climate system of Asia:A new paradigm[J]. Journal of Meteorological Research., 2016,30(1):1-11, doi:10.1007/s13351-015-5999-1.
[14]
Li Z Q, Lau K M W, Ramanathan V, et al. Aerosol and monsoon climate interactions over Asia[J]. Reviews of Geophysics, 2016,297:2250-2253,doi:/10.1002/2015RG000500.
[15]
Ramanathan V, Coauthors. Indian Ocean Experiment:An integrated assessment of the climate forcing and effects of the great Indo_Asian haze[J]. Journal of Geophysical Research, 2001a,106,D22,28371-28398.
[16]
Conant W C, Seinfeld J H, Wang J, et al. A model for the radiative forcing during ACE-Asia derived from CIRPAS Twin Otter and R/V Ronald H.Brown data and comparision with observation[J]. Journal of Geophysical Research, 108(D23),8661, DOI:10.1029/2002JD003260, 2003.
[17]
Ramanathan V, Crutzen P J. Newdirection:Atmospheric brown clouds[J]. Atmospheric Environment, 2003,37:4033-4035.
[18]
Chung C E, Ramanthan V, Kim D, et al. Global anthropogenic aerosol direct forcing derived from satellite and ground-based observations[J]. Journal of Geophysical Research, 2005,110,D24207,doi:10.1029/2005JD006356.
[19]
Yang F, Lau K M. Trend and variability of China precipitation in spring and summer:Linkage to sea-surface temperature[J]. International Journal of Climatology, 2004,24:1625-1644.
[20]
Ding Y H, Wang Z, Sun Y. Interdecadal variation of the summer precipitation in East China and its association with decreasing Asian summer monsoon. Part I:observed evidences[J]. International Journal of Climatology, 2008,28:1139-1161.
[21]
Ding Y H, Liu Y, Sun Y, et al. Weakening of the Asina summer monsoon and its impact on the precipitation pattern in China[J]. Water Resources Research, 2010,26:423-439.
[22]
Jin D C, Guan Z Y. Summer Rainfall Seesaw between Hetao and the Middle and Lower Reaches of the Yangtze River and Its Relationship with the North Atlantic Oscillation[J]. Journal of Climate, 2017, 30:6629-6243,DOI:10.1175/JCLI-D-16-0760.1.
[23]
Jin D C, Hameed S N, Huo L W. Changes in ENSO Teleconnection over the Western Pacific Impacts the Eastern China Precipitation Dipole[J]. Journal of Climate, 2016,29:7587-7598,DOI:10.1175/JCLI-D-16-0235.1.
[24]
Xu Q. Abrupt change of the middle-summer climate in central east China by the influence of atmospheric pollution[J]. Atmospheric Environment, 2001,35(30):5029-5040.
[25]
Menon S, Hansen J, Nazarenko L, et al. Climate effects of black carbon aerosols in China and India[J]. Science, 2002,297:2250-2253, doi:/10.1126/science.1075159.
Gu Y, Liou K N, Xue Y, et al. Climatic effects of different aerosol types in China simulated by the University of California, Los Angeles atmospheric general circulation model[J]. Journal of Geophysical Research, 2006,111,D15201,doi:10.1029/2005JD006312.
Zhang H, Wang Z L, Wang Z Z. Simulation of direct radiative forcing of aerosols and their effects on East Asian climate using an interactive AGCM-aerosol coupled system[J]. Climate Dynamics, 2012,38:1675-1693,DOI:10.1007/s00382-001-1131-0.
[30]
Zhang L, Liao H, Li J P. Impacts of Asian summer monsoon on seasonal and interannual variations of aerosols over eastern China[J]. Journal of Geophysical Research, 2010a,115,D00K05,doi:10.1029/2009JD012299.
[31]
Yan L, Liu X, Yang P, et al. Study of the impact of summer monsoon circulation on spatial distribution of aerosol in East Asia based on numerical simulations[J]. Journal of Applied Meteorology and Climatology, 2011,50(11):2270-2282,doi:10.1175/2011JAMC-D-11-06.1.
[32]
Zhu J, Liao H, Li J. Increases in aerosol concentrations over eastern China due to the decadal-scale weakening of the East Asian summer monsoon[J]. Geophysical Research Letters, 2012,39,L09809,doi:10.1029/2012GL051428.
[33]
Zhang L, Liao H, Li J P. Impact of the southeast Asian summer monsoon strength on the outflow of aerosols from South Asia[J]. Annals of Geophysics, 2010b,28:277-287.
[34]
Kim D, Chin M, Yu H B, et al. Sources, sinks, andtransatlantic transport of North Africandust aerosol:A multimodel analy sisand comparison with remotesensing data[J]. Journal of Geophysical Research:Atmosphere, 2014,119,6259-6277,doi:10.1002/2013JD021099.
[35]
Shahid M Z, Liao H, Li J P, et al. Seasonal variations of aerosols in Pakistan:Contributions of domestic anthropogenic emissions and transboundary transport[J]. Aerosol and Air Quality Research, 2015,15:1580-1600,doi:10.4209/aaqr.2014.12.0332.
Bond T C, Bhardwaj E, Dong R, et al. Historical emission of black and organic carbon aerosol from energy-related combusition, 1850~2000[J]. Global Biogeochemical Cycles, 2017,21,GB2018,doi:10.1029/2006GB002840.
[39]
Smith S J, Aardenne J, Klimont. Anthropogenic sulfur dioxide emissions:1850~2005[J]. Atmospheric Chemistry & Physics, 2011, 11:1101-1116,doi:10.5194/acp-11-1101-2011.
[40]
Zhang H, Wang Z L, Guo P W, et al. A modeling study of the effects of direct radiative forcing due to carbonaceous aerosol on the climate in East Asia[J]. Advances in Atmospheric Sciences, 2009,26(1):57-66.
[41]
Diehl T, Heil A, Chin M, et al.Anthropogenic, biomass burning, and volcanic emissions of black carbon, organic carbon, and SO2 from 1980 to 2010 for hindcast model experiments, Atmos[J]. Atmospheric Chemistry and Physics Discussions, 2012,12,24895-24954,doi:10.5194/acpd-12-24895-2012.
[42]
Hsu N C, Jeong M-J, Bettenhausen C, et al. Enhanced Deep Blue aerosol retrieval algorithm:The second generation[J]. Journal of Geophysical Research:Atmosphere, 2013,118,9296-9315,doi:10.1002/jgrd.50712.
[43]
Sayer A M, Munchak L A, Hsu N C, et al. MODIS Collection 6aerosol products:Comparison between Aqua's e-Deep Blue, Dark Target, and "merged" data sets, and usage recommendations[J]. Journal of Geophysical Research, 2014,119,13:965-13,989,doi:10.1002/2014JD022453.
[44]
Xie P, Arkin P A. Global precipitation:A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs[J]. Bulletin of the American Meteorological Society, 1997, 78:2539-2558.
[45]
Kalnay E, Kanamitsu M, Kistler R, et al. The NCEP/NCAR 40-year reanalysis project[J]. Bulletin of the American Meteorological Society, 1996,7:437-471.
[46]
Wang H L, Xie X N, Yan L B, et al. Impact of East Asian summer monsoon circulation on the regional aerosol distribution in observations and models[J]. Theoreticaland Applied Climatology, 2017,doi:10.1007/s00704-017-2199-1.
Wang B, Fan Z. Choice of south Asian summer monsoon indices[J]. Bulletin of the American Meteorological Society, 1999,80:629-638.
[51]
Wu A M, Ni Y Q. The influence of Tibetan Plateau on the interannual variability of Asian monsoon[J]. Advances in Atmospheric Sciences, 1997,14(4):491-504.
[52]
Wang Y, Wang B, Oh J H. Impact of preceeding El Nino on the East Asian summer atmosphere circulation[J]. Journal of the Meteorological Society of Japan, 2001,79:575-589.