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Woolway RI, Tong Y, Feng L, Zhao G, Dinh DA, Shi H, Zhang Y, Shi K. Multivariate extremes in lakes. Nat Commun 2024; 15:4559. [PMID: 38811653 PMCID: PMC11137041 DOI: 10.1038/s41467-024-49012-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 05/21/2024] [Indexed: 05/31/2024] Open
Abstract
Extreme within-lake conditions have the potential to exert detrimental effects on lakes. Here we use satellite observations to investigate how the occurrence of multiple types of extremes, notably algal blooms, lake heatwaves, and low lake levels, have varied in 2724 lakes since the 1980s. Our study, which focuses on bloom-affected lakes, suggests that 75% of studied lakes have experienced a concurrent increase in at least two of the extremes considered (27% defined as having a notable increase), with 25% experiencing an increase in frequency of all three extremes (5% had a notable increase). The greatest increases in the frequency of these extremes were found in regions that have experienced increases in agricultural fertilizer use, lake warming, and a decline in water availability. As extremes in lakes become more common, understanding their impacts must be a primary focus of future studies and they must be carefully considered in future risk assessments.
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Affiliation(s)
- R Iestyn Woolway
- School of Ocean Sciences, Bangor University, Anglesey, Wales, UK.
| | - Yan Tong
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Lian Feng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Gang Zhao
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Dieu Anh Dinh
- Centre for Freshwater and Environmental Studies, Dundalk Institute of Technology, Dundalk, Ireland
| | - Haoran Shi
- School of Ocean Sciences, Bangor University, Anglesey, Wales, UK
| | - Yunlin Zhang
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kun Shi
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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2
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Klein I, Uereyen S, Sogno P, Twele A, Hirner A, Kuenzer C. Global WaterPack - The development of global surface water over the past 20 years at daily temporal resolution. Sci Data 2024; 11:472. [PMID: 38724574 PMCID: PMC11082202 DOI: 10.1038/s41597-024-03328-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 04/29/2024] [Indexed: 05/12/2024] Open
Abstract
Open surface water across the globe is essential for many life forms and is an important source for human settlements, agriculture, and industry. The presence and variation in time and space is influenced by different natural conditions (e.g. climate, topography, geology) and human use (e.g. irrigation, flood protection). The information on the spatial and temporal distribution of open surface water is fundamental for many disciplines and is also required as an essential parameter for hydrological and climatological modelling. Here, we present a dataset derived from satellite earth observation, which is based on more than 6.3 million single MODIS products with a volume of approx. 300 TB. The resulting dataset reflects the situation of open surface water on a global scale for each day over the time period from 2003 to 2022 at a spatial resolution of 250 m. The dataset enables the analysis of the development of lake and reservoir surface areas, freezing cycles, and inundation areas.
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Affiliation(s)
- Igor Klein
- Earth Observation Center (EOC), German Aerospace Center (DLR), Weßling, Germany.
| | - Soner Uereyen
- Earth Observation Center (EOC), German Aerospace Center (DLR), Weßling, Germany
| | - Patrick Sogno
- Earth Observation Center (EOC), German Aerospace Center (DLR), Weßling, Germany
| | - André Twele
- Earth Observation Center (EOC), German Aerospace Center (DLR), Weßling, Germany
| | - Andreas Hirner
- Earth Observation Center (EOC), German Aerospace Center (DLR), Weßling, Germany
| | - Claudia Kuenzer
- Earth Observation Center (EOC), German Aerospace Center (DLR), Weßling, Germany
- Institute of Geography and Geology, University Wuerzburg, Wuerzburg, Germany
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3
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Yuan H, Li B, Cai Y, Liu E, Zeng Q. Biotic and Abiotic Regulations of Carbon Fixation into Lacustrine Sediments with Different Nutrient Levels. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:5844-5855. [PMID: 38506747 DOI: 10.1021/acs.est.3c09834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Lake sediments play a critical role in organic carbon (OC) conservation. However, the biogeochemical processes of the C cycle in lake ecosystems remain limitedly understood. In this study, Fe fractions and OC fractions, including total OC (TOC) and OC associated with iron oxides (TOCFeO), were measured for sediments from a eutrophic lake in China. The abundance and composition of bacterial communities encoding genes cbbL and cbbM were obtained by using high-throughput sequencing. We found that autochthonous algae with a low C/N ratio together with δ13C values predominantly contributed to the OC burial in sediments rather than terrigenous input. TOCFeO served as an important C sink deposited in the sediments. A significantly positive correlation (r = 0.92, p < 0.001) suggested the remarkable regulation of complexed FeO (Fep) on fixed TOC fractions, and the Fe redox shift triggered the loss of deposited OC. It should be noted that a significant correlation was not found between the absolute abundance of C-associating genera and TOC, as well as TOCFeO, and overlying water. Some rare genera, including Acidovora and Thiobacillus, served as keystone species and had a higher connected degree than the genera with high absolute abundance. These investigations synthetically concluded that the absolute abundance of functional genes did not dominate CO2 fixation into the sediments via photosynthesis catalyzed by the C-associating RuBisCO enzyme. That is, rare genera, together with high-abundance genera, control the C association and fixation in the sediments.
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Affiliation(s)
- Hezhong Yuan
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control and Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Bin Li
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control and Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Yiwei Cai
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control and Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Enfeng Liu
- College of Geography and Environment, Shandong Normal University, Ji'nan 250359, China
| | - Qingfei Zeng
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
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4
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Jiang W, Dai Z, Mei X, Long C, Binh NA, Van CM, Cheng J. Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170444. [PMID: 38290675 DOI: 10.1016/j.scitotenv.2024.170444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/01/2024]
Abstract
Lakes, as vital components of the Earth's ecosystem with crucial roles in global biogeochemical cycles, are experiencing pervasive and irreparable worldwide losses due to natural factors and intensive anthropogenic interferences. In this study, we investigated the long-term dynamic patterns of the Tonle Sap Lake, the largest freshwater lake in the Mekong River Basin, using a series of hydrological data and remote sensing images between 2000 and 2020. Our findings revealed a significant decline in the annual average water level of the lake by approximately 2.1 m over 20 years, accompanied by an annual average reduction in surface area of about 1400 km2. The Tonle Sap Lake exhibited episodic declines in water level and surface area, characterized by the absence of flooding during the flood season and increasing aridity during the dry season. Furthermore, the shoreline of the lake has significantly advanced towards the lake in the northwestern and southern regions during the dry season, primarily due to sedimentation-induced shallowing of the lake edge depth and decreased water levels. In contrast, lake shorelines in the eastern region remained relatively stable due to the constructed embankments for the protection of the cultivated farmland. While the seasonal fluctuations of the Tonle Sap Lake are regulated by regional precipitation in the Mekong River Basin, the prolonged shrinking of the lake can be mainly ascribed to intensive anthropogenic activities. The interception of dams along the upper Mekong River has resulted in a decrease in the inflow to Tonle Sap Lake, exacerbating its shrinkage. Moreover, there are minor impacts from agricultural land expansion and irrigation on the lake. This study highlights the driving forces behind the evolution of Tonle Sap Lake, providing valuable information for lake managers to develop strategies aimed at conserving and restoring the ecological integrity of the Tonle Sap Lake.
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Affiliation(s)
- Wenting Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Zhijun Dai
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China.
| | - Xuefei Mei
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Chuqi Long
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Nguyen An Binh
- Ho Chi Minh City Institute of Resources Geography, Vietnam Academy of Science and Technology, Ho Chi Minh City, Viet Nam
| | - Cong Mai Van
- Faculty of Civil Engineering, Thuyloi University, Hanoi, Viet Nam
| | - Jinping Cheng
- Department of Science and Environmental Studies, The Education University of Hong Kong, New Territories, Hong Kong, China
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5
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Wander HL, Farruggia MJ, La Fuente S, Korver MC, Chapina RJ, Robinson J, Bah A, Munthali E, Ghosh R, Stachelek J, Khandelwal A, Hanson PC, Weathers KC. Using Knowledge-Guided Machine Learning To Assess Patterns of Areal Change in Waterbodies across the Contiguous United States. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:5003-5013. [PMID: 38446785 PMCID: PMC10956424 DOI: 10.1021/acs.est.3c05784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 02/18/2024] [Accepted: 02/22/2024] [Indexed: 03/08/2024]
Abstract
Lake and reservoir surface areas are an important proxy for freshwater availability. Advancements in machine learning (ML) techniques and increased accessibility of remote sensing data products have enabled the analysis of waterbody surface area dynamics on broad spatial scales. However, interpreting the ML results remains a challenge. While ML provides important tools for identifying patterns, the resultant models do not include mechanisms. Thus, the "black-box" nature of ML techniques often lacks ecological meaning. Using ML, we characterized temporal patterns in lake and reservoir surface area change from 1984 to 2016 for 103,930 waterbodies in the contiguous United States. We then employed knowledge-guided machine learning (KGML) to classify all waterbodies into seven ecologically interpretable groups representing distinct patterns of surface area change over time. Many waterbodies were classified as having "no change" (43%), whereas the remaining 57% of waterbodies fell into other groups representing both linear and nonlinear patterns. This analysis demonstrates the potential of KGML not only for identifying ecologically relevant patterns of change across time but also for unraveling complex processes that underpin those changes.
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Affiliation(s)
| | | | | | | | | | - Jenna Robinson
- Rensselaer
Polytechnic Institute, Troy, New York 12180, United States
| | - Abdou Bah
- City
University of New York, New York, New York 10031, United States
| | - Elias Munthali
- Northern
Region Water Board, Bloemwater
Street, Mzuzu 105206, Malawi
| | - Rahul Ghosh
- University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jemma Stachelek
- Los
Alamos National Laboratory, Los Alamos, New Mexico 15672, United States
| | - Ankush Khandelwal
- University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Paul C. Hanson
- University
of Wisconsin − Madison, Madison, Wisconsin 53706, United States
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6
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Xu N, Zhang J, Daccache A, Liu C, Ahmadi A, Zhou T, Gou P. Assessing size shifts amidst a warming climate in lakes recharged by the Asian Water Tower through satellite imagery. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168770. [PMID: 38007131 DOI: 10.1016/j.scitotenv.2023.168770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/14/2023] [Accepted: 11/19/2023] [Indexed: 11/27/2023]
Abstract
Recent studies indicate that the Asian Water Tower (AWT) is at risk due to climate change, which can negatively impact water and food security in Asia. However, there is a lack of comprehensive information on lakes' spatial and temporal changes in this region. This information is crucial for understanding the risk magnitude and designing strategies. To fill this research gap, we analyzed 89,480 Landsat images from 1977 ± 2 to 2020 ± 2 to investigate the changes in the size of lakes recharged by the AWT. Our findings showed that out of the 209 lakes larger than 50 km2, 176 (84 %) grew during the wet season and 167 (81 %) during the dry season. 74 % of expanded lakes are located in the Inner Tibetan Plateau (TP) and Tarim basins. The lakes that shrank are found mainly in the Helmand, Indus, and Yangtze basins. Over the entire period, the area of shrinkage (55,077.028 km2 in wet season, 53,986.796 km2 in dry) markedly exceeded expansion (13,000.267 km2 in wet, 11,038.805 km2 in dry), with the drastic decline of the Aral Sea being a major contributor to shrinkage, accounting for 90 % of the total loss. From 1990 ± 2 to 2020 ± 2, alpine lakes mostly expanded, plain lakes mostly shrank, with the opposite trend from 1977 ± 2 to 1990 ± 2. Glacial loss and permafrost thawing under global warming in the Inner TP, Tarim Interior, Syr Darya, and Mekong basins were strongly correlated with lake expansion. However, permafrost discontinuities may prevent significant growth of lakes in the Indus and Ganges basins despite increased recharge. Our findings point to the prominence of the risk the lakes recharged by AWT face. Taking immediate action to manage these risks and adaptation is crucial as the AWT retreats and lake recharges are slowed.
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Affiliation(s)
- Nuo Xu
- Department of Biological and Agricultural Engineering, University of California, Davis 95616, USA; Big Data Technology Research Center, Nanhu Laboratory, Jiaxing 314002, China; Beijing Big Data Advanced Technology Institute, Beijing 100871, China; Key Laboratory of Earth Observation of Hainan Province, Hainan Aerospace Information Research Institute, Sanya 572029, China
| | - Jiahua Zhang
- Remote Sensing Information and Digital Earth Center, College of Computer Science and Technology, Qingdao University, Qingdao 266071, China; Key Laboratory of Earth Observation of Hainan Province, Hainan Aerospace Information Research Institute, Sanya 572029, China.
| | - Andre Daccache
- Department of Biological and Agricultural Engineering, University of California, Davis 95616, USA
| | - Chong Liu
- Piesat Information Technology Co., Ltd., Beijing 100195, China; Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Arman Ahmadi
- Department of Biological and Agricultural Engineering, University of California, Davis 95616, USA
| | - Tianyu Zhou
- Big Data Technology Research Center, Nanhu Laboratory, Jiaxing 314002, China; Beijing Big Data Advanced Technology Institute, Beijing 100871, China
| | - Peng Gou
- Big Data Technology Research Center, Nanhu Laboratory, Jiaxing 314002, China; Beijing Big Data Advanced Technology Institute, Beijing 100871, China.
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7
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Shah D, Zhang S, Sarkar S, Davidson C, Zhang R, Zhao M, Devadiga S, Noojipady P, Román MO, Gao H. Transitioning from MODIS to VIIRS Global Water Reservoir Product. Sci Data 2024; 11:209. [PMID: 38360806 PMCID: PMC10869837 DOI: 10.1038/s41597-024-03028-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/30/2024] [Indexed: 02/17/2024] Open
Abstract
Reservoirs play a crucial role in regulating water availability and enhancing water security. Here, we develop NASA's Visible Infrared Imaging Radiometer Suite (VIIRS) based Global Water Reservoir (GWR) product, consisting of measurements of reservoir area, elevation, storage, evaporation rate, and evaporation loss for 164 large global reservoirs. The dataset is available at 8-day and monthly temporal resolutions. Since the Moderate Resolution Imaging Spectroradiometer (MODIS) is close to the end of its life, we further evaluated the consistency between MODIS and VIIRS-based GWR to ensure continuity to the 20+ year MODIS GWR product. Independent assessment of VIIRS reservoir storage (8-day) retrievals against in-situ measurements shows an average of R2 = 0.84, RMSE = 0.47 km3, and NRMSE = 16.45%. The evaporation rate has an average of R2 = 0.56, RMSE = 1.32 mm/day, and NRMSE = 28.14%. Furthermore, results show good consistency (R2 ≥ 0.90) between the VIIRS and MODIS-based product components, confirming that long-term data continuity can be achieved. This dataset can provide valuable insights for long-term trend analysis, hydrological modeling, and understanding hydroclimatic extremes in the context of reservoirs.
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Affiliation(s)
- Deep Shah
- Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, USA
| | - Shuai Zhang
- Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, USA
| | - Sudipta Sarkar
- Science Systems and Applications Inc., Lanham, MD, USA
- Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Carol Davidson
- Science Systems and Applications Inc., Lanham, MD, USA
- Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Rui Zhang
- Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Global Science & Technology Inc., Greenbelt, MD, USA
| | - Maosheng Zhao
- Science Systems and Applications Inc., Lanham, MD, USA
- Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Sadashiva Devadiga
- Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - Praveen Noojipady
- Science Systems and Applications Inc., Lanham, MD, USA
- Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | | | - Huilin Gao
- Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, USA.
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8
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Meyer MF, Topp SN, King TV, Ladwig R, Pilla RM, Dugan HA, Eggleston JR, Hampton SE, Leech DM, Oleksy IA, Ross JC, Ross MRV, Woolway RI, Yang X, Brousil MR, Fickas KC, Padowski JC, Pollard AI, Ren J, Zwart JA. National-scale remotely sensed lake trophic state from 1984 through 2020. Sci Data 2024; 11:77. [PMID: 38228637 PMCID: PMC10791641 DOI: 10.1038/s41597-024-02921-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 01/05/2024] [Indexed: 01/18/2024] Open
Abstract
Lake trophic state is a key ecosystem property that integrates a lake's physical, chemical, and biological processes. Despite the importance of trophic state as a gauge of lake water quality, standardized and machine-readable observations are uncommon. Remote sensing presents an opportunity to detect and analyze lake trophic state with reproducible, robust methods across time and space. We used Landsat surface reflectance data to create the first compendium of annual lake trophic state for 55,662 lakes of at least 10 ha in area throughout the contiguous United States from 1984 through 2020. The dataset was constructed with FAIR data principles (Findable, Accessible, Interoperable, and Reproducible) in mind, where data are publicly available, relational keys from parent datasets are retained, and all data wrangling and modeling routines are scripted for future reuse. Together, this resource offers critical data to address basic and applied research questions about lake water quality at a suite of spatial and temporal scales.
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Affiliation(s)
- Michael F Meyer
- U.S. Geological Survey, Madison, WI, USA.
- University of Wisconsin - Madison, Madison, WI, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | - Xiao Yang
- Southern Methodist University, Dallas, TX, USA
| | | | - Kate C Fickas
- U.S. Geological Survey, Sioux Falls, SD, USA
- University of California - Santa Barbara, Santa Barbara, CA, USA
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9
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Ma X, Huang S, Huang Y, Wang X, Luo Y. Evaporation from the hypersaline Aral Sea in Central Asia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168412. [PMID: 37939939 DOI: 10.1016/j.scitotenv.2023.168412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 10/08/2023] [Accepted: 11/05/2023] [Indexed: 11/10/2023]
Abstract
The Aral Sea, once the world's fourth largest lake, has shrunk by 91 % in area and 95 % in volume since 1960s. The shrinkage has resulted in a notable increase in water salinity, which may affect the surface evaporation. Despite previous studies, the hydrological consequences of salinity in the Aral Sea have often been overlooked. In this study, we investigated the impact of water surface salinity on evaporation by employing a water activity-based Penman salinity equation, and we explored its effects on the water balance of the Aral Sea. We established an empirical relationship between the water activity and water salinity. The results indicated that the evaporation rates were overestimated when salinity effects were excluded from evaporation estimations in Aral Sea, especially for the hypersaline South Aral Sea. During the period from 2000 to 2020, the evaporation of a 16 km3 water volume could have been overestimated if the salinity effects were ignored. When calculated from updated evaporation and the lake water balance, the inflow from the middle reaches to the Aral Sea showed significant deviations from the existing data sources. We emphasize that, the observed runoff at stations is higher than our estimated inflow.
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Affiliation(s)
- Xiaoting Ma
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, China
| | - Shuangyan Huang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, China; Department of Geography, Ghent University, Ghent 9000, Belgium
| | - Yue Huang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, China
| | - Xiaolei Wang
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Luo
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, China; College of Geography and Environmental Sciences, Hainan Normal University, Haikou 571158, China.
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10
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Cho MS, Park J. Spatiotemporal lake area changes influenced by climate change over 40 years in the Korean Peninsula. Sci Rep 2024; 14:1144. [PMID: 38212426 PMCID: PMC10784581 DOI: 10.1038/s41598-023-51084-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/30/2023] [Indexed: 01/13/2024] Open
Abstract
Water resources in lakes of the Korean Peninsula play a significant role in society and ecosystems in both South and North Korea. This study characterized spatiotemporal changes in the lake area during the dry season (March-May) in the Korean Peninsula over the last 40 years. The satellite images (Landsat 5-9) were used to derive annual areas of 975 lakes during the dry season from 1984 to 2023. Our analysis indicated that the MNDWI is the optimal remote sensing-based index for delineating lake areas in the Korean Peninsula, with an overall accuracy of 92.3%. Based on the selected index, the total lake areas of the dry seasons have increased from 1070.7 km2 in 1984 to 1659.3 km2 in 2023, mainly due to newly constructed dam reservoirs. While the detailed changes in lake area vary, we found divergent results based on their sizes. The large lakes (> 10 km2) showed their area increased by 0.0473 km2 (0.1%) every year and have more influences from climate change. On the contrary, the small lakes (≤ 10 km2) have area decreases by 0.0006-0.006 km2 (0.15-0.5%) every year and have less influence from climate change. This study shows that the spatiotemporal lake area changes are determined by either climate change or human activity.
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Affiliation(s)
- Myung Sik Cho
- Center for Global Change and Earth Observations, Michigan State University, Lansing, MI, USA
| | - Jinwoo Park
- Department of Geography and Geographic Information Science, University of North Dakota, Grand Forks, ND, USA.
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11
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Wang SQ, Zhou XL, Jin YS, Jeppesen E, Yang L, Shen SK. Gene co-expression networks unravel the molecular responses of freshwater hydrophytes to combined stress of salinity and cadmium. CHEMOSPHERE 2023; 340:139933. [PMID: 37625492 DOI: 10.1016/j.chemosphere.2023.139933] [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: 05/15/2023] [Revised: 08/13/2023] [Accepted: 08/21/2023] [Indexed: 08/27/2023]
Abstract
Salinization in freshwater lakes is becoming a serious global environmental problem, especially in lakes of plateaus such as south-western plateau of China. However, limited information is available about the molecular response of freshwater hydrophytes to salinity under multiple stress. In the present study, a weighted gene co-expression network (WGCNA) was used to identify the modules of co-expressed genes in the physiological and biochemical indicators of Pistia stratiotes to determine its molecular response to salinity (NaCl) alone and when combined with cadmium (Cd). The physiological and biochemical indicators showed that P. stratiotes improved its salt tolerance by enhancing photosynthetic abilities, reducing oxidative stress, and inducing osmoprotectant generation. Morever, addition of NaCl reduced the Cd accumulation in P. stratiotes. Transcriptome and WGCNA analysis revealed that the pathways of alpha-linolenic acid metabolism, ribosomal, flavonoid biosynthesis, and phenylpropanoid biosynthesis were significantly enriched in both treatments. Genes associated with photosynthesis-antenna proteins, nitrogen metabolism, and the acid cycle pathways were only expressed under salinity stress alone, while the proteasome pathway was only significantly enriched in the combined salinity and Cd treatment. Our findings provide novel insights into the effects of salinization on aquatic plants in freshwater ecosystems and the management of aquatic ecosystems under global change.
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Affiliation(s)
- Si-Qi Wang
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, Yunnan, China
| | - Xiong-Li Zhou
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, Yunnan, China
| | - Yan-Shan Jin
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, Yunnan, China
| | - Erik Jeppesen
- Department of Ecoscience, Aarhus University, Aarhus C, 8000, Denmark; Sino-Danish Centre for Education and Research, Beijing, 100049, China; Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara, 06800, Turkey; Institute of Marine Sciences, Middle East Technical University, Mersin, 33731, Turkey; Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming, 650500, China
| | - Liu Yang
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, Yunnan, China
| | - Shi-Kang Shen
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, Yunnan, China.
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12
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Fisher JB, Dohlen MB, Halverson GH, Collison JW, Pearson C, Huntington JL. Remotely sensed terrestrial open water evaporation. Sci Rep 2023; 13:8174. [PMID: 37210390 PMCID: PMC10199918 DOI: 10.1038/s41598-023-34921-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/10/2023] [Indexed: 05/22/2023] Open
Abstract
Terrestrial open water evaporation is difficult to measure both in situ and remotely yet is critical for understanding changes in reservoirs, lakes, and inland seas from human management and climatically altered hydrological cycling. Multiple satellite missions and data systems (e.g., ECOSTRESS, OpenET) now operationally produce evapotranspiration (ET), but the open water evaporation data produced over millions of water bodies are algorithmically produced differently than the main ET data and are often overlooked in evaluation. Here, we evaluated the open water evaporation algorithm, AquaSEBS, used by ECOSTRESS and OpenET against 19 in situ open water evaporation sites from around the world using MODIS and Landsat data, making this one of the largest open water evaporation validations to date. Overall, our remotely sensed open water evaporation retrieval captured some variability and magnitude in the in situ data when controlling for high wind events (instantaneous: r2 = 0.71; bias = 13% of mean; RMSE = 38% of mean). Much of the instantaneous uncertainty was due to high wind events (u > mean daily 7.5 m·s-1) when the open water evaporation process shifts from radiatively-controlled to atmospherically-controlled; not accounting for high wind events decreases instantaneous accuracy significantly (r2 = 0.47; bias = 36% of mean; RMSE = 62% of mean). However, this sensitivity minimizes with temporal integration (e.g., daily RMSE = 1.2-1.5 mm·day-1). To benchmark AquaSEBS, we ran a suite of 11 machine learning models, but found that they did not significantly improve on the process-based formulation of AquaSEBS suggesting that the remaining error is from a combination of the in situ evaporation measurements, forcing data, and/or scaling mismatch; the machine learning models were able to predict error well in and of itself (r2 = 0.74). Our results provide confidence in the remotely sensed open water evaporation data, though not without uncertainty, and a foundation by which current and future missions may build such operational data.
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Affiliation(s)
- Joshua B Fisher
- Schmid College of Science and Technology, Chapman University, 1 University Drive, Orange, CA, 92866, USA.
- Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, 607 Charles E Young Drive East, Los Angeles, CA, 90095, USA.
| | - Matthew B Dohlen
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA
| | - Gregory H Halverson
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA
| | - Jacob W Collison
- Department of Civil Engineering, University of New Mexico, 1 University of New Mexico, Albuquerque, NM, 87131, USA
| | - Christopher Pearson
- Division of Hydrologic Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, 89512, USA
| | - Justin L Huntington
- Division of Hydrologic Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, 89512, USA
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13
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Yao F, Livneh B, Rajagopalan B, Wang J, Crétaux JF, Wada Y, Berge-Nguyen M. Satellites reveal widespread decline in global lake water storage. Science 2023; 380:743-749. [PMID: 37200445 DOI: 10.1126/science.abo2812] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 03/31/2023] [Indexed: 05/20/2023]
Abstract
Climate change and human activities increasingly threaten lakes that store 87% of Earth's liquid surface fresh water. Yet, recent trends and drivers of lake volume change remain largely unknown globally. Here, we analyze the 1972 largest global lakes using three decades of satellite observations, climate data, and hydrologic models, finding statistically significant storage declines for 53% of these water bodies over the period 1992-2020. The net volume loss in natural lakes is largely attributable to climate warming, increasing evaporative demand, and human water consumption, whereas sedimentation dominates storage losses in reservoirs. We estimate that roughly one-quarter of the world's population resides in a basin of a drying lake, underscoring the necessity of incorporating climate change and sedimentation impacts into sustainable water resources management.
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Affiliation(s)
- Fangfang Yao
- Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, CO 80309, USA
| | - Ben Livneh
- Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, CO 80309, USA
- Department of Civil, Environmental and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Balaji Rajagopalan
- Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, CO 80309, USA
- Department of Civil, Environmental and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Jida Wang
- Department of Geography and Geospatial Sciences, Kansas State University, Manhattan, KS 66506, USA
| | - Jean-François Crétaux
- Laboratoire d'Études en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse, CNES-IRD-CNRS-UT3, Centre National d'Études Spatiales (CNES), 31013 Toulouse, France
| | - Yoshihide Wada
- Climate and Livability Initiative, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
- International Institute for Applied Systems Analysis (IIASA), A-2361 Laxenburg, Austria
| | - Muriel Berge-Nguyen
- Laboratoire d'Études en Géophysique et Océanographie Spatiales (LEGOS), Université de Toulouse, CNES-IRD-CNRS-UT3, Centre National d'Études Spatiales (CNES), 31013 Toulouse, France
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14
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Zhou L, Zhou Y, Zhang Y, Wu Y, Jang KS, Spencer RGM, Brookes JD, Jeppesen E. Hydrological Controls on Dissolved Organic Matter Composition throughout the Aquatic Continuum of the Watershed of Selin Co, the Largest Lake on the Tibetan Plateau. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:4668-4678. [PMID: 36892554 DOI: 10.1021/acs.est.2c08257] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Alpine river and lake systems on the Tibetan Plateau are highly sensitive indicators and amplifiers of global climate change and important components of the carbon cycle. Dissolved organic matter (DOM) encompasses organic carbon in aquatic systems, yet knowledge about DOM variation throughout the river-lake aquatic continuum within alpine regions is limited. We used optical spectroscopy, ultrahigh-resolution mass spectrometry (Fourier transform ion cyclotron resonance mass spectrometry), and stable water isotopic measurements to evaluate linkages between DOM composition and hydrological connection. We investigated glacial influences on DOM composition throughout the watershed of Selin Co, including upstream glacier-fed rivers and downstream-linked lakes. We found that the dissolved organic carbon concentration increased, whereas specific ultraviolet absorbance (SUVA254) decreased along the river-lake continuum. Relative to rivers, the downstream lakes had low relative abundances of polyphenolic and condensed aromatic compounds and humic-like substances but increased relative abundances of aliphatics and protein-like compounds. SUVA254 decreased while protein-like components increased with enriched stable water isotope δ2H-H2O, indicating that DOM aromaticity declined while autochthonous production increased along the flow paths. Glacier meltwater contributed to elevated relative abundances of aliphatic and protein-like compounds in headwater streams, while increased relative abundances of aromatics and humic-like DOM were found in glacier-fed lakes than downstream lakes. We conclude that changes in hydrological conditions, including glacier melt driven by a warming climate, will significantly alter DOM composition and potentially their biogeochemical function in surface waters on the Tibetan Plateau.
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Affiliation(s)
- Lei Zhou
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yongqiang Zhou
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yunlin Zhang
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yonghong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Kyoung-Soon Jang
- Bio-Chemical Analysis Team, Korea Basic Science Institute, Cheongju 28119, South Korea
| | - Robert G M Spencer
- Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, Florida 32306, United States
| | - Justin D Brookes
- Water Research Centre, School of Biological Science, The University of Adelaide, 5005 Adelaide, Australia
| | - Erik Jeppesen
- Department of Bioscience and Center for Water Technology (WATEC), Aarhus University, Vejlsøvej 25, DK-8600 Silkeborg, Denmark
- Sino-Danish Centre for Education and Research, Beijing 100190, China
- Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara 06800, Turkey
- Institute of Marine Sciences, Middle East Technical University, Mersin 33731, Turkey
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15
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Chen J, Jiao Z, Liang Z, Ma J, Xu M, Biswal S, Ramanathan M, Sun S, Zhang Z. Association between temperature variability and global meningitis incidence. ENVIRONMENT INTERNATIONAL 2023; 171:107649. [PMID: 36470121 DOI: 10.1016/j.envint.2022.107649] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/23/2022] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Meningitis can cause devastating epidemics and is susceptible to climate change. It is unclear how temperature variability, an indicator of climate change, is associated with meningitis incidence. METHODS We used global meningitis incidence data along with meteorological and demographic data over 1990-2019 to identify the association between temperature variability and meningitis. We also employed future (2020-2100) climate data to predict meningitis incidence under different emission levels (SSPs: Shared Socioeconomic Pathways). RESULTS We found that the mean temperature variability increased by almost 3 folds in the past 30 years. The largest changes occurred in Australasia, Tropical Latin America, and Central Sub-Saharan Africa. With a logarithmic unit increase in temperature variability, the overall global meningitis risk increases by 4.8 %. Australasia, Central Sub-Saharan Africa, and High-income North America are the most at-risk regions. Higher statistical differences were identified in males, children, and the elderly population. Compared to high-emission (SSP585) scenario, we predicted a median reduction of 85.8 % in meningitis incidence globally under the low-emission (SSP126) climate change scenario by 2100. CONCLUSION Our study provides evidence for temperature variability being in association with meningitis incidence, which suggests that global actions are urgently needed to address climate change and to prevent meningitis occurrence.
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Affiliation(s)
- Junjun Chen
- Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Zhihua Jiao
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zhisheng Liang
- Department of Global Health, Peking University School of Public Health, Beijing, China
| | - Junxiong Ma
- Department of Global Health, Peking University School of Public Health, Beijing, China
| | - Ming Xu
- Department of Global Health, Peking University School of Public Health, Beijing, China; Institute for Global Health and Development, Peking University, Beijing, China
| | - Shyam Biswal
- Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, US
| | - Murugappan Ramanathan
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Shengzhi Sun
- School of Public Health, Capital Medical University, Beijing, China
| | - Zhenyu Zhang
- Department of Global Health, Peking University School of Public Health, Beijing, China; Institute for Global Health and Development, Peking University, Beijing, China.
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