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DOI	10.1016/j.atmosres.2018.08.026
	Assessment of atmospheric aerosols from two reanalysis products over Australia
	Mukkavilli S.K.; Prasad A.A.; Taylor R.A.; Huang J.; Mitchell R.M.; Troccoli A.; Kay M.J.
发表日期	2019
ISSN	0169-8095
起始页码	149
结束页码	164
卷号	215
英文摘要	Assessments of atmospheric aerosols from reanalysis are important for understanding uncertainty in model simulations, and ultimately predictions, such as for solar power or air quality forecasts and assessments. This study intercompares total aerosol optical depth (AOD) and dust AOD (DAOD) from two global reanalyses datasets, the European Centre for Medium-Range Weather Forecasts (ECMWF) Monitoring Atmospheric Composition and Climate (MACC) and the NASA Modern-Era Retrospective Analysis for Research-2 (MERRA-2). These are evaluated against AeroSpan (Aerosol characterisation via Sun photometry: Australian Network) ground observations which forms part of the Aerosol Robotic Network (AERONET) over the Australian continent for the 2002–2012 period. During dust storms, AeroSpan/AERONET AOD measurements were missing due to cloud screening. To overcome validation limitations in sun photometry for dust events, a nephelometer's scattering coefficient is qualitatively compared against reanalysis of DAOD at a key dust storm activation site, Tinga Tingana in South Australia (~200 km east of Lake Eyre). A specific extreme event that occurred in 2009 originating from the Lake Eyre basin, a major dust source covering one-sixth of Australia, was studied. The results show that MERRA-2 reanalysis overestimates monthly total AOD twice as much compared to AeroSpan/AERONET ground observations but seems better correlated against AeroSpan/AERONET than ECMWF/MACC. Mean data of MERRA-2 time series over 10 years provide lower DAOD values and lower dust aerosol estimates than ECMWF/MACC reanalysis (over the Lake Eyre basin with spatial averaging). Specifically at Tinga Tingana, the correlation from MERRA-2 (0.45 correlation) and ECMWF/MACC (0.43 correlation) against AeroSpan/AERONET's AOD were similar. Between MERRA-2 and ECMWF/MACC decade long daily gridded DAOD, the correlation coefficient was high at 0.73, again indicating similarity between the datasets. MERRA-2 total AOD correlation is significantly higher (by 0.26) against AeroSpan/AERONET than ECMWF/MACC. MERRA-2 also provides higher AOD values in extreme cases which may correspond to dust storms. During dust storms, a hybrid strategy using nephelometers and hourly reanalysis from MERRA-2 is able to identify dust storms better than AeroSpan/AERONET. Overall, this work can enable and inform better aerosol data assimilation into forecast models such as for solar energy, agriculture or air quality over Australia. © 2018 Elsevier B.V.
英文关键词	AERONET; Aerosol optical depth; Australian dust AOD; ECMWF/MACC; MERRA-2; Reanalysis
语种	英语
scopus关键词	Air quality; Atmospheric composition; Atmospheric thermodynamics; Dust; Lakes; NASA; Nephelometers; Optical properties; Photometry; Solar energy; Storms; Weather forecasting; AERONET; Aerosol optical depths; Australian dust AOD; ECMWF/MACC; MERRA-2; Reanalysis; Atmospheric aerosols; AERONET; aerosol property; dust; extreme event; ground-based measurement; light scattering; optical depth; photometer; weather forecasting; Australia; South Australia
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162176
作者单位	School of Photovoltaic and Renewable Energy Engineering, University of South Wales (UNSW), Australia; Oceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, Australia; Climate Change Research Centre and Australian Research Council (ARC) Centre of Excellence for Climate System Science, University of New South Wales (UNSW), Australia; School of Mechanical and Manufacturing Engineering, University of South Wales (UNSW), Australia; School of Environmental Sciences, University of East Anglia (UEA), Norwich, United Kingdom; World Energy & Meteorology Council, c/UEA, Norwich, United Kingdom
推荐引用方式 GB/T 7714	Mukkavilli S.K.,Prasad A.A.,Taylor R.A.,et al. Assessment of atmospheric aerosols from two reanalysis products over Australia[J],2019,215.
APA	Mukkavilli S.K..,Prasad A.A..,Taylor R.A..,Huang J..,Mitchell R.M..,...&Kay M.J..(2019).Assessment of atmospheric aerosols from two reanalysis products over Australia.Atmospheric Research,215.
MLA	Mukkavilli S.K.,et al."Assessment of atmospheric aerosols from two reanalysis products over Australia".Atmospheric Research 215(2019).