Spatiotemporal imputation of MAIAC AOD using deep learning with downscaling

doi:10.1016/j.rse.2019.111584

	Spatiotemporal imputation of MAIAC AOD using deep learning with downscaling
	Li, Lianfa 3,4; Franklin, Meredith 3; Girguis, Mariam 3; Lurmann, Frederick 1; Wu, Jun 2; Pavlovic, Nathan 1; Breton, Carrie 3; Gilliland, Frank 3; Habre, Rima 3
刊名	REMOTE SENSING OF ENVIRONMENT
	2020-02-01
卷号	237 页码:17
关键词	Aerosol Optical Depth MAIAC MERRA-2 GMI Replay Simulation Deep learning Downscaling Missingness imputation Air quality
ISSN号	0034-4257
DOI	10.1016/j.rse.2019.111584
通讯作者	Li, Lianfa(lianfali@usc.edu)
英文摘要	Aerosols have adverse health effects and play a significant role in the climate as well. The Multiangle Implementation of Atmospheric Correction (MAIAC) provides Aerosol Optical Depth (AOD) at high temporal (daily) and spatial (1 km) resolution, making it particularly useful to infer and characterize spatiotemporal variability of aerosols at a fine spatial scale for exposure assessment and health studies. However, clouds and conditions of high surface reflectance result in a significant proportion of missing MAIAC AOD. To fill these gaps, we present an imputation approach using deep learning with downscaling. Using a baseline autoencoder, we leverage residual connections in deep neural networks to boost learning and parameter sharing to reduce overfitting, and conduct bagging to reduce error variance in the imputations. Downscaled through a similar auto-encoder based deep residual network, Modern-Era Retrospective analysis for Research and Applications Version 2 (MERRA-2) GMI Replay Simulation (M2GMI) data were introduced to the network as an important gap-filling feature that varies in space to be used for missingness imputations. Imputing weekly MAIAC AOD from 2000 to 2016 over California, a state with considerable geographic heterogeneity, our full (non-full) residual network achieved mean R-2 = 0.94 (0.86) [RMSE = 0.007 (0.01)] in an independent test, showing considerably better performance than a regular neural network or non-linear generalized additive model (mean R-2 = 0.78-0.81; mean RMSE = 0.013-0.015). The adjusted imputed as well as combined imputed and observed MAIAC AOD showed strong correlation with Aerosol Robotic Network (AERONET) AOD (R = 0.83; R-2 = 0.69, RMSE = 0.04). Our results show that we can generate reliable imputations of missing AOD through a deep learning approach, having important downstream air quality modeling applications.
资助项目	Lifecourse Approach to Developmental Repercussions of Environmental Agents on Metabolic and Respiratory Health NIH ECHO grants[4UH3OD023287] ; Southern California Environmental Health Sciences Center (National Institute of Environmental Health Sciences' grant)[P30ES007048] ; NASA Modeling, Analysis and Prediction (MAP) program ; NVIDIA Corporation
WOS关键词	AEROSOL OPTICAL DEPTH ; LEVEL PM2.5 CONCENTRATIONS ; VARIABILITY ; RETRIEVALS ; CALIFORNIA ; EXPOSURES ; AERONET ; RANGE ; LAND
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000509819300037
资助机构	Lifecourse Approach to Developmental Repercussions of Environmental Agents on Metabolic and Respiratory Health NIH ECHO grants ; Southern California Environmental Health Sciences Center (National Institute of Environmental Health Sciences' grant) ; NASA Modeling, Analysis and Prediction (MAP) program ; NVIDIA Corporation
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/132300]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Lianfa
作者单位	1.Sonoma Technol Inc, Petaluma, CA USA 2.Univ Calif Irvine, Susan & Henry Samueli Coll Hlth Sci, Program Publ Hlth, Irvine, CA USA 3.Univ Southern Calif, Dept Prevent Med, Los Angeles, CA 90007 USA 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Lianfa,Franklin, Meredith,Girguis, Mariam,et al. Spatiotemporal imputation of MAIAC AOD using deep learning with downscaling[J]. REMOTE SENSING OF ENVIRONMENT,2020,237:17.
APA	Li, Lianfa.,Franklin, Meredith.,Girguis, Mariam.,Lurmann, Frederick.,Wu, Jun.,...&Habre, Rima.(2020).Spatiotemporal imputation of MAIAC AOD using deep learning with downscaling.REMOTE SENSING OF ENVIRONMENT,237,17.
MLA	Li, Lianfa,et al."Spatiotemporal imputation of MAIAC AOD using deep learning with downscaling".REMOTE SENSING OF ENVIRONMENT 237(2020):17.