DOI: 10.1016/j.atmosenv.2019.117229
论文题名: Evaluation of the MISR fine resolution aerosol product using MODIS, MISR, and ground observations over China
作者: Si Y. ; Chen L. ; Xiong X. ; Shi S. ; Husi L. ; Cai K.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 223 语种: 英语
英文关键词: Aerosols
; NASA
; AERONET
; Aerosol robotic networks
; Correlation coefficient
; MISR
; MODIS 3 km
; Multiangle imaging spectroradiometer
; Spatiotemporal characteristics
; V23 4.4 km
; Radiometers
; AERONET
; aerosol composition
; error analysis
; MISR
; MODIS
; optical depth
; seasonality
; spatial resolution
; accuracy
; aerosol
; air pollution
; China
; correlation coefficient
; optical depth
; pollution monitoring
; priority journal
; season
; Taiwan
; Beijing [China]
; China
; Guangdong
; Hebei
; Yangtze Delta
; Zhujiang Delta
学科: AERONET
; AOD
; MISR
; MODIS 3 km
; V22
; V23 4.4 km
中文摘要: Recently, NASA's Multiangle Imaging SpectroRadiometer (MISR) team released the Version 23 (V23) 4.4-km Aerosol Optical Depth (AOD) product, which has better spatial resolution than V22 at 17.6 km. However, its quality has not been validated in China. Here, V23 products for different spatiotemporal domains are obtained for validation against Aerosol Robotic NETwork (AERONET) AOD measurements for 29 sites from 2008 to 2017. Based on the national daily mean, V23 AOD yields a correlation coefficient (R) of 0.902 with AERONET; 59.45% of retrievals fall within the expected error (=EE; ±0.05 or ±0.2×AOD). A mean error (ME) of −0.0605 with 24.11% of retrievals falling below the EE indicates that MISR data are still underestimated at high AODs. The sample numbers and accuracies of spatially averaged 17.6-km and 50-km data are greatly improved relative to V22. The seasonal mean of V23 retrievals = EE in fall and winter are highest, followed by those in summer and spring; the validation results at 17.6 km are generally better than those at 50 km. By region, V23 retrievals = EE in the Beijing–Tianjin–Hebei (BTH), Yangtze River Delta (YRD) and Pearl River Delta (PRD) regions are 68.87%, 61.43%, and 73.13% respectively, while that of Taiwan is below 60% (55.75%). No V22 records exist in PRD, and V23 products over other regions in all seasons perform well; V22 retrievals in summer are also recommended. Compared with Terra/MODIS 3-km AOD in 2016, the V23 product has a slightly higher R value (0.925) with AERONET than MODIS (0.909). The MISR AOD bias is lower, and MODIS AOD is overestimated relative to the ground truth; both present consistent seasonality characteristics (spring > winter > summer > autumn), with the maximum in March and minimum in August. To investigate the spatiotemporal characteristics over long-term AOD, MISR V23 4.4-km AOD can be used in combination with other observation data. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160992
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center, China Meteorological Administration, Beijing, 10081, China; State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100101, China; Science Systems and Applications, Inc., 10210 Greenbelt Rd, Lanham, MD 20706, United States; Spatial information processing engineering laboratory of Henan province, Kaifeng, 475004, China; School of Computer and Information Engineering, Henan University, Kaifeng, 475004, China
Recommended Citation:
Si Y.,Chen L.,Xiong X.,et al. Evaluation of the MISR fine resolution aerosol product using MODIS, MISR, and ground observations over China[J]. Atmospheric Environment,2020-01-01,223