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Su X, Wei Y, Wang L, Zhang M, Jiang D, Feng L. Accuracy, stability, and continuity of AVHRR, SeaWiFS, MODIS, and VIIRS deep blue long-term land aerosol retrieval in Asia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 832:155048. [PMID: 35390389 DOI: 10.1016/j.scitotenv.2022.155048] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/21/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
The deep blue (DB) aerosol algorithm applied to four satellite instruments, AVHRR, SeaWiFS, MODIS, and VIIRS, produced a long-term aerosol data set since 1989. This study first evaluated and compared the accuracy, stability, and continuity of four DB aerosol optical depth (AOD) products in Asia using AErosol RObotic NETwork measurements. Then, the regional AOD spatial distributions, coverages, and series trends are analyzed. The results show that VIIRS DB has the highest accuracy and stability, with an expected error (EE, ±(0.05 + 20%)) of 76.59% and stability of approximately 0.027 per decade. The performance of MODIS DB is slightly worse than that of VIIRS. However, their AOD pattern, coverage, and trend are comparable. The performance of AVHRR (EE = 58.10%) and the stability of SeaWiFS (0.093 per decade) are less good. Therefore, SeaWiFS DB data should be used with caution for trend analysis. The AOD accuracy and coverage together determine the AOD pattern and the continuity of multi-sensor data. In addition to consistent algorithm accuracy, it is necessary to consider the influences in sensor sampling and inappropriate-pixel screening schemes in the joint multi-sensor analysis. Encouragingly, although multiple DB products have different AOD averages of regional series, their changing trends are consistent. Error analysis shows that the AOD bias characteristic is different in different surface conditions. This indicates that the surface reflectance estimated by the DB algorithm using different techniques is divergent, which may be the direction for the improvement of the algorithm.
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Affiliation(s)
- Xin Su
- Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Regional Ecology and Environmental Change, China University of Geosciences, Wuhan 430074, China
| | - Yifeng Wei
- Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Regional Ecology and Environmental Change, China University of Geosciences, Wuhan 430074, China
| | - Lunche Wang
- Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Regional Ecology and Environmental Change, China University of Geosciences, Wuhan 430074, China
| | - Ming Zhang
- Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Regional Ecology and Environmental Change, China University of Geosciences, Wuhan 430074, China
| | - Daoyang Jiang
- Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Regional Ecology and Environmental Change, China University of Geosciences, Wuhan 430074, China
| | - Lan Feng
- Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area, School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Regional Ecology and Environmental Change, China University of Geosciences, Wuhan 430074, China.
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Yadav K, Rao VD, Sridevi B, Sarma VVSS. Decadal variations in natural and anthropogenic aerosol optical depth over the Bay of Bengal: the influence of pollutants from Indo-GangeticPlain. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:55202-55219. [PMID: 34129167 DOI: 10.1007/s11356-021-14703-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 05/31/2021] [Indexed: 06/12/2023]
Abstract
Perennial increase in atmospheric pollution over the Bay of Bengal (BoB) and South China Sea is reported due to increase in human population and industrial activity in South and Southeast Asia. Based on total aerosol optical depth (AOD) derived from MODIS (moderate resolution imaging resolution imaging spectroradiometer), natural and anthropogenic fractions were derived. The seasonality and spatial variability in rate of increase in total, natural, and anthropogenic AOD fractions were examined over the BoB using data collected between 2001 and 2019. Both total and anthropogenic AOD displayed statistically significant rate of increase in the northwest BoB (NWB) and western coastal BoB (WCB) regions during 2001 to 2019 whereas the long-term changes are insignificant in the other regions of BoB. Significant increase in AOD in the NWB and WCB regions is mainly contributed by dominant outflow of anthropogenic emissions from Indo-Gangetic Plain (IGP) area of Indian subcontinent. The magnitude of AOD decreased by half from northern BoB to equatorial region due to increase in distance from the source region. The contribution of anthropogenic AOD was >70% to total AOD with higher contribution during winter and lower during summer. The rate of increase in both total and anthropogenic AOD was close to 0.104 and 0.099 per decade in the NWB and 0.069 and 0.059 per decade in the WCB region between 2001 and 2019. The rate of increase in total and anthropogenic AOD decreased from 2001-2009 (0.164 and 0.115 per decade respectively) to 2010-2019 (0.068 and 0.076 per decade respectively) in the NWB region. Significant increase in anthropogenic AOD by 50 and 30% was observed during El Niño and La Niña periods respectively than normal year in both northwest BoB (NWB) and western coastal (WCB) regions due to change in strength and direction of winds. Although some fraction of anthropogenic AOD is found over the entire BoB, significant rate of increase in anthropogenic AOD is found only about 23% of the area of BoB than hitherto reported as entire BoB. The impact of atmospheric deposition of anthropogenic aerosols on biogeochemical processes, such as primary production and ocean acidification, needs further evaluation.
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Affiliation(s)
- K Yadav
- CSIR-National Institute of Oceanography, 176 Lawsons Bay Colony, Visakhapatnam, 530017, India
| | - V D Rao
- ESSO-National Centre for Coastal Research, Chennai, India
| | - B Sridevi
- CSIR-National Institute of Oceanography, 176 Lawsons Bay Colony, Visakhapatnam, 530017, India
| | - V V S S Sarma
- CSIR-National Institute of Oceanography, 176 Lawsons Bay Colony, Visakhapatnam, 530017, India.
- Academy of Scientific and Innovative Research, Dona Paula, Goa, India.
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Corral AF, Braun RA, Cairns B, Gorooh VA, Liu H, Ma L, Mardi AH, Painemal D, Stamnes S, van Diedenhoven B, Wang H, Yang Y, Zhang B, Sorooshian A. An Overview of Atmospheric Features Over the Western North Atlantic Ocean and North American East Coast - Part 1: Analysis of Aerosols, Gases, and Wet Deposition Chemistry. JOURNAL OF GEOPHYSICAL RESEARCH. ATMOSPHERES : JGR 2021; 126:e2020JD032592. [PMID: 34211820 PMCID: PMC8243758 DOI: 10.1029/2020jd032592] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 11/04/2020] [Indexed: 06/13/2023]
Abstract
The Western North Atlantic Ocean (WNAO) and adjoining East Coast of North America are of great importance for atmospheric research and have been extensively studied for several decades. This broad region exhibits complex meteorological features and a wide range of conditions associated with gas and particulate species from many sources regionally and other continents. As Part 1 of a 2-part paper series, this work characterizes quantities associated with atmospheric chemistry, including gases, aerosols, and wet deposition, by analyzing available satellite observations, ground-based data, model simulations, and reanalysis products. Part 2 provides insight into the atmospheric circulation, boundary layer variability, three-dimensional cloud structure, properties, and precipitation over the WNAO domain. Key results include spatial and seasonal differences in composition along the North American East Coast and over the WNAO associated with varying sources of smoke and dust and meteorological drivers such as temperature, moisture, and precipitation. Spatial and seasonal variations of tropospheric carbon monoxide and ozone highlight different pathways toward the accumulation of these species in the troposphere. Spatial distributions of speciated aerosol optical depth and vertical profiles of aerosol mass mixing ratios show a clear seasonal cycle highlighting the influence of different sources in addition to the impact of intercontinental transport. Analysis of long-term climate model simulations of aerosol species and satellite observations of carbon monoxide confirm that there has been a significant decline in recent decades among anthropogenic constituents owing to regulatory activities.
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Affiliation(s)
- Andrea F Corral
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Rachel A Braun
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Brian Cairns
- NASA Goddard Institute for Space Studies, New York, NY, USA
| | - Vesta Afzali Gorooh
- Center for Hydrometeorology and Remote Sensing (CHRS), Department of Civil and Environmental Engineering, The Henry Samueli School of Engineering, University of California, Irvine, CA, USA
| | - Hongyu Liu
- National Institute of Aerospace, Hampton, VA, USA
| | - Lin Ma
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Ali Hossein Mardi
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - David Painemal
- NASA Langley Research Center, Hampton, VA, USA
- Science Systems and Applications, Inc., Hampton, VA, USA
| | | | - Bastiaan van Diedenhoven
- NASA Goddard Institute for Space Studies, New York, NY, USA
- Columbia University Center for Climate System Research, New York, NY, USA
| | - Hailong Wang
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Yang Yang
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Bo Zhang
- National Institute of Aerospace, Hampton, VA, USA
| | - Armin Sorooshian
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
- Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, USA
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Acharya P, Barik G, Gayen BK, Bar S, Maiti A, Sarkar A, Ghosh S, De SK, Sreekesh S. Revisiting the levels of Aerosol Optical Depth in south-southeast Asia, Europe and USA amid the COVID-19 pandemic using satellite observations. ENVIRONMENTAL RESEARCH 2021; 193:110514. [PMID: 33245884 PMCID: PMC7685941 DOI: 10.1016/j.envres.2020.110514] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 10/29/2020] [Accepted: 11/18/2020] [Indexed: 05/21/2023]
Abstract
The countries around the world are dealing with air quality issues for decades due to their mode of production and energy usages. The outbreak of COVID-19 as a pandemic and consequent global economic shutdown, for the first time, provided a base for the real-time experiment of the effect of reduced emissions across the globe in abetting the air pollution issue. The present study dealt with the changes in Aerosol Optical Depth (AOD), a marker of air pollution, because of global economic shutdown due to the coronavirus pandemic. The study considered the countries in south and south-east Asia (SSEA), Europe and the USA for their extended period of lockdown due to coronavirus pandemic. Daily Aerosol Optical Depth (AOD) from Moderate-resolution imaging spectroradiometer (MODIS) and tropospheric column density of NO2 and SO2 from Ozone monitoring instrument (OMI) sensors, including meteorological data such as wind speed (WS) and relative humidity (RH) were analyzed during the pre-lockdown (2017-2019) and lockdown periods (2020). The average AOD, NO2 and SO2 during the lockdown period were statistically compared with their pre-lockdown average using Wilcoxon-signed-paired-rank test. The accuracy of the MODIS-derived AOD, including the changing pattern of AOD due to lockdown was estimated using AERONET data. The weekly anomaly of AOD, NO2 and SO2 was used for analyzing the space-time variation of aerosol load as restrictions were imposed by the concerned countries at the different points of time. Additionally, a random forest-based regression (RF) model was used to examine the effects of meteorological and emission parameters on the spatial variation of AOD. A significant reduction of AOD (-20%) was obtained for majority of the areas in SSEA, Europe and USA during the lockdown period. Yet, the clusters of increased AOD (30-60%) was obtained in the south-east part of SSEA, the western part of Europe and US regions. NO2 reductions were measured up to 20-40%, while SO2 emission increased up to 30% for a majority of areas in these regions. A notable space-time variation was observed in weekly anomaly. We found the evidence of the formation of new particles for causing high AOD under high RH and low WS, aided by the downward vertical wind flow. The RF model showed a distinguishable relative importance of emission and meteorological factors among these regions to account for the spatial variability of AOD. Our findings suggest that the continued lockdown might provide a temporary solution to air pollution; however, to combat persistent air quality issues, it needs switching over to the cleaner mode of production and energy. The findings of this study, thus, advocated for alternative energy policy at the global scale.
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Affiliation(s)
- Prasenjit Acharya
- Department of Geography, Vidyasagar University, Midnapore, West Bengal, India.
| | - Gunadhar Barik
- Department of Geography, Vidyasagar University, Midnapore, West Bengal, India
| | - Bijoy Krishna Gayen
- Department of Remote Sensing and GIS, Vidyasagar University, Midnapore, West Bengal, India
| | - Somnath Bar
- Department of Geoinformatics, Central University of Jharkhand, Ranchi, India
| | - Arabinda Maiti
- Department of Geography, Vidyasagar University, Midnapore, West Bengal, India
| | - Ashis Sarkar
- Department of Geography, Vidyasagar University, Midnapore, West Bengal, India
| | - Surajit Ghosh
- International Water Management Institute (IWMI), Sri Lanka
| | | | - S Sreekesh
- Center for the Study of Regional Development, Jawaharlal Nehru University, New Delhi, India
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Sorooshian A, Corral AF, Braun RA, Cairns B, Crosbie E, Ferrare R, Hair J, Kleb MM, Mardi AH, Maring H, McComiskey A, Moore R, Painemal D, Jo Scarino A, Schlosser J, Shingler T, Shook M, Wang H, Zeng X, Ziemba L, Zuidema P. Atmospheric Research Over the Western North Atlantic Ocean Region and North American East Coast: A Review of Past Work and Challenges Ahead. JOURNAL OF GEOPHYSICAL RESEARCH. ATMOSPHERES : JGR 2020; 125:10.1029/2019jd031626. [PMID: 32699733 PMCID: PMC7375207 DOI: 10.1029/2019jd031626] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/21/2020] [Indexed: 05/26/2023]
Abstract
Decades of atmospheric research have focused on the Western North Atlantic Ocean (WNAO) region because of its unique location that offers accessibility for airborne and ship measurements, gradients in important atmospheric parameters, and a range of meteorological regimes leading to diverse conditions that are poorly understood. This work reviews these scientific investigations for the WNAO region, including the East Coast of North America and the island of Bermuda. Over 50 field campaigns and long-term monitoring programs, in addition to 715 peer-reviewed publications between 1946 and 2019 have provided a firm foundation of knowledge for these areas. Of particular importance in this region has been extensive work at the island of Bermuda that is host to important time series records of oceanic and atmospheric variables. Our review categorizes WNAO atmospheric research into eight major categories, with some studies fitting into multiple categories (relative %): Aerosols (25%), Gases (24%), Development/Validation of Techniques, Models, and Retrievals (18%), Meteorology and Transport (9%), Air-Sea Interactions (8%), Clouds/Storms (8%), Atmospheric Deposition (7%), and Aerosol-Cloud Interactions (2%). Recommendations for future research are provided in the categories highlighted above.
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Affiliation(s)
- Armin Sorooshian
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ
- Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ
| | - Andrea F. Corral
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ
| | - Rachel A. Braun
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ
| | - Brian Cairns
- NASA Goddard Institute for Space Studies, New York, NY
| | - Ewan Crosbie
- NASA Langley Research Center, Hampton, VA
- Science Systems and Applications, Inc., Hampton, VA
| | | | | | | | - Ali Hossein Mardi
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ
| | | | | | | | - David Painemal
- NASA Langley Research Center, Hampton, VA
- Science Systems and Applications, Inc., Hampton, VA
| | - Amy Jo Scarino
- NASA Langley Research Center, Hampton, VA
- Science Systems and Applications, Inc., Hampton, VA
| | - Joseph Schlosser
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ
| | | | | | - Hailong Wang
- Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA
| | - Xubin Zeng
- Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ
| | | | - Paquita Zuidema
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL
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Yu H, Yang Y, Wang H, Tan Q, Chin M, Levy RC, Remer LA, Smith SJ, Yuan T, Shi Y. Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003-2017. ATMOSPHERIC CHEMISTRY AND PHYSICS 2020; 20:139-161. [PMID: 33204243 PMCID: PMC7668156 DOI: 10.5194/acp-20-139-2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Emissions and long-range transport of mineral dust and combustion-related aerosol from burning fossil fuels and biomass vary from year to year, driven by the evolution of the economy and changes in meteorological conditions and environmental regulations. This study offers both satellite and model perspectives on the interannual variability and possible trends of combustion aerosol and dust in major continental outflow regions over the past 15 years (2003-2017). The decade-long record of aerosol optical depth (AOD, denoted as τ), separately for combustion aerosol (τ c) and dust (τ d), over global oceans is derived from the Collection 6 aerosol products of the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard both Terra and Aqua. These MODIS Aqua datasets, complemented by aerosol source-tagged simulations using the Community Atmospheric Model version 5 (CAM5), are then analyzed to understand the interannual variability and potential trends of τ c and τ d in the major continental outflows. Both MODIS and CAM5 consistently yield a similar decreasing trend of -0.017 to -0.020 per decade for τ c over the North Atlantic Ocean and the Mediterranean Sea that is attributable to reduced emissions from North America and Europe, respectively. On the contrary, both MODIS and CAM5 display an increasing trend of +0.017 to +0.036 per decade for τ c over the tropical Indian Ocean, the Bay of Bengal, and the Arabian Sea, which reflects the influence of increased anthropogenic emissions from South Asia and the Middle East in the last 2 decades. Over the northwestern Pacific Ocean, which is often affected by East Asian emissions of pollution and dust, the MODIS retrievals show a decreasing trend of -0.021 per decade for τ c and -0.012 per decade for τ d, which is, however, not reproduced by the CAM5 model. In other outflow regions strongly influenced by biomass burning smoke or dust, both MODIS retrievals and CAM5 simulations show no statistically significant trends; the MODIS-observed interannual variability is usually larger than that of the CAM5 simulation.
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Affiliation(s)
- Hongbin Yu
- Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Yang Yang
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Hailong Wang
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Qian Tan
- Bay Area Environmental Research Institute, Petaluma, CA, USA
- NASA Ames Research Center, Moffett Field, CA, USA
| | - Mian Chin
- Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Robert C. Levy
- Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Lorraine A. Remer
- Joint Center for Earth Science & Technology, University of Maryland at Baltimore County, Baltimore, MD, USA
| | | | - Tianle Yuan
- Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Joint Center for Earth Science & Technology, University of Maryland at Baltimore County, Baltimore, MD, USA
| | - Yingxi Shi
- Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Joint Center for Earth Science & Technology, University of Maryland at Baltimore County, Baltimore, MD, USA
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Intercomparison of Multiple Satellite Aerosol Products against AERONET over the North China Plain. ATMOSPHERE 2019. [DOI: 10.3390/atmos10090480] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, using Aerosol Robotic Network aerosol optical depth (AOD) products at three stations in the North China Plain (NCP)—a heavily polluted region in China—the AOD products from six satellite-borne radiometers: the Moderate Resolution Imagining Spectroradiometer (MODIS), the Multiangle Imaging Spectroradiometer (MISR), Ozone Mapping Imaging (OMI), the Visible Infrared Imaging Radiometer (VIIRS), the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS), and Polarization and Directionality of the Earth’s Reflectances (POLDER), were thoroughly validated, shedding new light on their advantages and disadvantages. The MODIS Deep Blue (DB) products provide more accurate retrievals than the MODIS Dark Target (DT) and other satellite products at the Beijing site (BJ,a megacity), with higher correlations with AERONET (R > 0.93), lower mean absolute bias (MB < 0.012), and higher percentages (>68%) falling within the expected error (EE). All MODIS DT and DB products perform better than the other satellite products at the Xianghe site (XH, a suburb). The MODIS/Aqua DT products at both 3-km and 10-km resolutions performed better than the other space-borne AOD products at the Xinglong site (XL, a rural area at the top of a mountain). MISR, VIIRS, and SeaWiFS tend to underestimate high AOD values and overestimate AOD values under very low AOD conditions in the NCP. Both OMI and POLDER significantly underestimate the AOD. In terms of data volume, MISR with the limited swath width of 380 km has less data volume than the other satellite sensors. MODIS products have the highest sampling rate, especially the MODIS DT and DB merged products, and can be used for various climate study and air-quality monitoring.
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Trends and Variability in Aerosol Optical Depth over North China from MODIS C6 Aerosol Products during 2001–2016. ATMOSPHERE 2017. [DOI: 10.3390/atmos8110223] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Climatology Analysis of Aerosol Effect on Marine Water Cloud from Long-Term Satellite Climate Data Records. REMOTE SENSING 2016. [DOI: 10.3390/rs8040300] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Validation of Long-Term Global Aerosol Climatology Project Optical Thickness Retrievals Using AERONET and MODIS Data. REMOTE SENSING 2015. [DOI: 10.3390/rs71012588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chan PK, Zhao XP, Heidinger AK. Long-Term Aerosol Climate Data Record Derived from Operational AVHRR Satellite Observations. ACTA ACUST UNITED AC 2013. [DOI: 10.7167/2013/140791] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Aerosol optical thickness (AOT) was retrieved using the Advanced Very High Resolution Radiometer (AVHRR) PATMOS-x Level-2b gridded radiances and the two-channel algorithm of the National Climatic Data Center (NCDC). The primary retrieval product is AOT at 0.63 μm channel. AOT is also retrieved at 0.83 μm or 1.61 μm channel for consistent check. The retrieval was made during day time, under clear sky and snow-free conditions, and over the global oceans. The spatial resolution is 0.1×0.1 degree grid and the temporal resolution is both daily and monthly. The resultant AVHRR AOT climate data record (CDR) spans from August 1981 to December 2009 and provides the longest aerosol CDR currently available from operational satellites. This dataset is useful in studying aerosol climate forcing, monitoring long-term aerosol trends, and evaluating global air pollution and aerosol transport models over the global ocean.
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Affiliation(s)
- P. K. Chan
- Cooperative Institute for Climate and Satellites at North Carolina State University (CICS-NC) and (NCDC), NOAA/NESDIS, 151 Patton Avenue, Asheville, NC 28801, USA
| | - X.-P. Zhao
- National Climatic Data Center (NCDC), NOAA/NESDIS, 151 Patton Avenue, Asheville, NC 28801, USA
| | - A. K. Heidinger
- Center for Satellite Applications and Research (STAR), NOAA/NESDIS, 1225 West Dayton, Madison, WI 53706, USA
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Kishcha P, Starobinets B, Long CN, Alpert P. Unexpected increasing AOT trends over northwest Bay of Bengal in the early postmonsoon season. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jd018726] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Cao C, Vermote E, Xiong X. Using AVHRR lunar observations for NDVI long-term climate change detection. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009jd012179] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Murphy DM, Solomon S, Portmann RW, Rosenlof KH, Forster PM, Wong T. An observationally based energy balance for the Earth since 1950. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009jd012105] [Citation(s) in RCA: 158] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Streets DG, Yan F, Chin M, Diehl T, Mahowald N, Schultz M, Wild M, Wu Y, Yu C. Anthropogenic and natural contributions to regional trends in aerosol optical depth, 1980–2006. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jd011624] [Citation(s) in RCA: 174] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Kishcha P, Starobinets B, Kalashnikova O, Long CN, Alpert P. Variations of meridional aerosol distribution and solar dimming. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jd010975] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Wang K, Dickinson RE, Liang S. Clear Sky Visibility Has Decreased over Land Globally from 1973 to 2007. Science 2009; 323:1468-70. [DOI: 10.1126/science.1167549] [Citation(s) in RCA: 269] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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