Article
Environmental Sciences
Ge Liu, Sijia Li, Kaishan Song, Xiang Wang, Zhidan Wen, Tiit Kutser, Pierre-Andrew Jacinthe, Yingxin Shang, Lili Lyu, Chong Fang, Ying Yang, Qian Yang, Baohua Zhang, Shuai Cheng, Junbin Hou
Summary: As important components of dissolved organic matter (DOM) in an aquatic environment, colored DOM (CDOM) and dissolved organic carbon (DOC) play an essential role in the carbon cycle of inland aquatic systems. This study used optical satellite remote sensing to examine the relationships between CDOM and DOC in lakes on the Qinghai-Tibet Plateau and showed strong correlations between CDOM absorption coefficient at 350 nm and Sentinel-2A Multi Spectral Instrument (MSI) imagery reflectance data. The study also revealed significant differences in CDOM and DOC concentrations between fresh and saline waters in the Tibetan Plateau, emphasizing the importance of combining salinity and remote sensing data for estimating lake DOC.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Huizeng Liu, Xianqiang He, Qingquan Li, Susanne Kratzer, Junjie Wang, Tiezhu Shi, Zhongwen Hu, Chao Yang, Shuibo Hu, Qiming Zhou, Guofeng Wu
Summary: The study proposes a hybrid approach for estimating UV Rrs from visible bands and evaluates its performance using in situ and satellite data, showing high accuracy in both clear open ocean and optically complex waters. The model-estimated UV Rrs may improve the accuracy of absorption coefficients in semi-analytical IOPs algorithm, indicating great potential for reconstructing UV Rrs data and enhancing IOPs retrieval for historical satellite sensors.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Srinivas Kolluru, Surya Prakash Tiwari, Shirishkumar S. Gedam
Summary: This study investigates methods for inverting spectral remote sensing reflectance to inherent optical properties and introduces hybrid inversion approaches. Evaluation of various algorithms revealed that the Quasi-Analytical Algorithm and Generalized Inherent Optical Property models perform better in deriving absorption spectrum from remote sensing reflectance. Hybrid models combining SAAs and ADAs demonstrate more accurate retrieval of absorption subcomponents.
Article
Engineering, Electrical & Electronic
Weining Zhu
Summary: Compared to traditional remote sensing classification and inversion techniques, remote sensing statistical inference is a novel method for rapidly estimating the statistical properties of ground objects. In this study, using field-measured data from Qiandao Lake, we tested over 240,000 inference models to determine the statistical parameters of colored dissolved organic matter. The results showed that accurate inference can be achieved with errors of less than 10%, using specific combinations of bands, variables, and functions.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2023)
Article
Environmental Sciences
Jan El Kassar, Bennet Juhls, Martin Hieronymi, Rene Preusker, Anne Morgenstern, Juergen Fischer, Pier Paul Overduin
Summary: In the past decades, the Arctic has undergone significant temperature increases and changes in hydrological regimes, leading to accelerated permafrost thawing and increased mobilization of organic carbon into the Arctic Ocean. This study uses ground truth and satellite observations to examine the spatial and temporal variability of dissolved organic carbon (DOC) concentrations in the Lena River, Siberia. The results demonstrate that satellite observations, particularly with the Ocean and Land Colour Instrument (OLCI) on Sentinel-3, can effectively capture DOC concentrations in large rivers like Lena and provide valuable data for understanding land-ocean carbon fluxes in a changing climate.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
B. Juhls, A. Matsuoka, M. Lizotte, G. Becu, P. P. Overduin, J. El Kassar, E. Devred, D. Doxaran, J. Ferland, M. H. Forget, A. Hilborn, M. Hieronymi, E. Leymarie, J. Maury, L. Oziel, L. Tisserand, D. O. J. Anikina, M. Dillon, M. Babin
Summary: The increasing air temperatures and permafrost thaw in Arctic river watersheds are directly impacting the aquatic environment and changing the quantity and quality of dissolved organic carbon (DOC) transported into the Arctic Ocean. In this study, the strong seasonal dynamics of the Mackenzie River plume and the distribution of terrigenous DOC on the Beaufort Sea Shelf were shown for the first time using in situ and Satellite Ocean Colour Remote Sensing (SOCRS) data. The performance of different algorithms for atmospheric correction and colored dissolved organic matter retrieval were evaluated, and the established DOC-CDOM relationship allowed estimations of DOC concentrations from SOCRS.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Environmental Sciences
Ana Gabriela Bonelli, Vincent Vantrepotte, Daniel Schaffer Ferreira Jorge, Julien Demaria, Cedric Jamet, David Dessailly, Antoine Mangin, Odile Fanton d'Andon, Ewa Kwiatkowska, Hubert Loisel
Summary: A semi-analytical model (CDOM-KD2) has been developed for estimating the absorption by colored dissolved organic matter from ocean color remote sensing, showing slightly better performance compared to former models. The relative contribution of colored dissolved organic matter in absorption exhibits strong spatial disparities.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Cassandra Nickles, Edward Beighley
Summary: The SWOT mission will measure river discharges but lacks temporal and spatial uniformity. The drainage area ratio method is not applicable for the observable river network in the Mississippi River basin, with limitations such as cumulative urban area and number of dams affecting its efficiency.
Article
Biodiversity Conservation
Zhigang Wang, Shengkui Cao, Guangchao Cao, Yaofang Hou, Youcai Wang, Ligang Kang
Summary: This study aims to systematically reveal the water variation in different vegetation landscape zones of the alpine inland river basin, delineate its water resources protection zones, and propose its water resources management strategies.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Saiful Haque Rahat, Todd Steissberg, Won Chang, Xi Chen, Garima Mandavya, Jacob Tracy, Asphota Wasti, Gaurav Atreya, Shah Saki, Md Abul Ehsan Bhuiyan, Patrick Ray
Summary: This study addresses the lack of data and the complexity of factors affecting river water quality in simulating river water quality under uncertainty. It presents a technique that combines ground-based observations with remote-sensed surface reflectance data using a machine learning model, allowing for spatial variability and effective water quality prediction under uncertainty.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Gholamreza Mohammadpour, Saied Pirasteh
Summary: The study parametrized SPM concentration in the Persian Gulf and Oman Sea coastal waters using MODIS-derived Rrs values, with the optical model being sensitive to CDOM concentration and showing significant correlation with in situ measurements. This increased the average accuracy of estimates up to 73%.
MARINE POLLUTION BULLETIN
(2021)
Review
Environmental Sciences
Sam Purkis, Ved Chirayath
Summary: This article discusses the wide range of remote sensing technologies currently applied in oceans, highlighting next-generation technologies that may revolutionize the field, while also pointing out significant challenges in ocean remote sensing. Despite oceans comprising over 90% of the habitable volume of Earth, their imaging resolution is far below that of the moon and Mars. At this crucial historical moment, our understanding of rapidly changing marine ecosystems is still limited by technological maturity and challenges.
ANNUAL REVIEW OF ENVIRONMENT AND RESOURCES
(2022)
Review
Environmental Sciences
Zhihui Li, Fei Zhang, Jingchao Shi, Ngai Weng Chan, Mou Leong Tan, Hsiang-te Kung, Changjiang Liu, Chunyan Cheng, Yunfei Cai, Weiwei Wang, Xingyou Li
Summary: Chromophoric dissolved organic matter (CDOM) plays a critical role in the biogeochemistry and energy flux of aquatic ecosystems. Remote sensing data has been increasingly used in CDOM research, particularly in China and the United States. Recent research focus has shifted from studying absorption and fluorescence properties to optimizing remote sensing inversion models. Choosing the appropriate inversion method for different types of water body is important. Future research should focus on studying the characteristics of CDOM, optimizing inversion algorithms, developing algorithms with low dependence on measured data, and building a transportable inversion model to promote the deeper and more comprehensive development of CDOM research.
MARINE POLLUTION BULLETIN
(2023)
Article
Biodiversity Conservation
Peng Chen, Biao Wang, Yanlan Wu, Qijun Wang, Zuoji Huang, Chunlin Wang
Summary: This study proposed a multi-source remote sensing water quality inversion method based on a small number of samples, which solved the problem of scale inconsistency among multi-source remote sensing data and achieved large-scale and efficient inversion of urban river water quality.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Trinh Thi Tham, Trinh Le Hung, Trinh Thi Thuy, Vu Thi Mai, Le Thi Trinh, Chu Vu Hai, Tu Binh Minh
Summary: The Red River is the largest river in northern Vietnam, serving as the main water source for the Red River Delta region. However, due to urbanization and industrialization, surface water in the region has been contaminated by various anthropogenic sources. A regression model was built using reflectance values of visible and near-infrared bands and in situ data for water quality assessment, focusing on parameters like total suspended solids and turbidity, offering valuable insights for monitoring and management of water quality in the Red River Delta.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
X. Flores-Melo, R. Giesecke, I. R. Schloss, M. P. Latorre, X. Durrieu de Madron, F. Bourrin, M. L. Spinelli, C. Menniti, H. E. Gonzales, E. Menschel, J. Martin
Summary: This study presents an evaluation of the downward fluxes and composition of particulate matter in the Beagle Channel. The results show that the fluxes and composition of particulate matter differ between the western and eastern parts of the channel, with the former influenced by glacial and organic material, and the latter dominated by river inputs and phytoplankton blooms. This research contributes to understanding the impact of climate change on the biological carbon pump and land-sea connections in this high-latitude ecosystem.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Simone M. A. Lira, Ralf Schwamborn, Mauro de Melo Junior, Humberto L. Varona, Syumara Queiroz, Doris Veleda, Alef J. Silva, Sigrid Neumann-Leitao, Moacyr Araujo, Catarina R. Marcolin
Summary: In this study, CTD and ADCP data, as well as zooplankton samples from Fernando de Noronha Archipelago, were used to analyze the relationship between flow, island topography, chlorophyll-a fluorescence, and zooplankton abundance. The study found the presence of island and larval island effects downstream, and an upstream island effect upstream.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Olga Yu. Evseeva, Alexander G. Dvoretsky
Summary: This study investigated the species composition and spatial distribution of bryozoan diversity in the southern region of Franz Josef Land. A total of 151 bryozoan species were found, including 22 species recorded for the first time in this region. The diversity of bryozoans in this area is influenced by environmental factors such as depth, temperature, and the content of stones and shells.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Emma F. Young, Sally E. Thorpe, Angelika H. H. Renner, Eugene J. Murphy
Summary: Antarctic krill is a key species in the Southern Ocean and also the target of a commercial fishery. This study focuses on understanding the physical and behavioral drivers of krill movement and retention in the South Orkney Islands region through a regional modeling approach. The results suggest that oceanic transport and retention of krill are influenced by oceanographic variability and krill behavior.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Viviane David, Anne Mouget, Pierre Thiriet, Corentin Minart, Yannick Perrot, Loic Le Goff, Olivier Bianchimani, Solene Basthard-Bogain, Tristan Estaque, Justine Richaume, Jean-Francois Sys, Adrien Cheminee, Eric Feunteun, Anthony Acou, Patrice Brehmer
Summary: Scientists combined split-beam and multibeam echosounders to detect and classify different fish species, and found that acoustic data significantly improved the accuracy of species classification. These acoustic methods have important implications for marine management and decision-making.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Jia-Hui Xie, Xue-Lin Shao, Kai Ma, Li Gao
Summary: Chaetomorpha linum can store a large amount of phosphorus and utilize it for growth when phosphate is abundant, and it can produce alkaline phosphatase and release mobile phosphorus from sediments when phosphate is deficient. The sources of phosphorus supporting the blooms of C. linum vary seasonally in Swan Lagoon.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
A. A. Kubryakov, A. I. Mizyuk, S. V. Stanichny
Summary: This article investigates the evolution of the Sevastopol eddies using altimetry measurements and a high-resolution Nemo numerical model. The eddies can reside in the Black Sea for >3-6 months, impacting cross-shelf exchange and nutrient fluxes. The stationarity of the eddies is mainly due to the continental slope acting as a barrier, preventing cyclonic propagation.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Qingyuan Yang, Guoping Zhu
Summary: This study investigated the feeding habits of the spiny icefish in the Bransfield Strait and used biochemical tracers to demonstrate the variability in its diet, which is influenced by the availability of krill and the dynamic hydrography. The results highlight the potential of biochemical tracers in reflecting changes in prey's diet in a highly dynamic environment.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Andreana Cadaillon, Clara M. Iachetti, Ricardo Giesecke, Valeska Vasquez Lepio, Andrea Malits, Irene R. Schloss
Summary: A joint Chilean-Argentinian research cruise in the Beagle Channel revealed spatial and temporal heterogeneity of plankton abundance and composition. Plankton assemblages varied with bathymetry, water temperature, and nutrient availability. The easternmost sector of the channel had the highest total cell abundances and a diverse mix of small and large diatoms.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Barbara P. Paiva, Carlos A. F. Schettini, Eduardo Siegle
Summary: The Sao Francisco River is an important river in Brazil, crossing the semi-arid region. A series of dams have been built along the river for hydropower, changing the flow significantly. A hydrodynamic model was used to simulate the effects of flow changes on saline intrusion in the estuary. The simulations showed an increase in mixing and decrease in river contribution after the dams were built. The results can be used by management agencies to improve water quality for human consumption.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Xu Dong, Di Qi, Baohong Chen, Yingxu Wu, Xinqing Zheng, Hui Lin
Summary: Seasonal-scale local forcings reduce coastal pH and aragonite saturation state. The dynamics of carbonate system parameters were investigated in a coral habitat influenced by seasonal current patterns. Both Oaragonite and pH showed seasonal variations, controlled by dissolved inorganic carbon (DIC) and temperature. Ocean acidification scenarios projected a decrease in Oaragonite amplitude and an increase in hydrogen ion concentration ([H+]) amplitude.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Roman Cieslinski, Izabela Chlost, Michal Szydlowski
Summary: The Vistula Lagoon, one of the two lagoons on the Polish coast, is economically and environmentally significant. This study aims to calculate the water balance of the lagoon before and after the construction of a canal through the Vistula Spit. The construction of the new connection may impact the lagoon's water balance and its biotic and abiotic environment. Data on precipitation, evaporation, inflow from the catchment, and inflow/outflow through the Strait of Baltiysk were collected for mathematical modeling. The study suggests that the construction of the new canal will not significantly alter the lagoon's water balance but may cause environmental problems.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
F. P. Brandini, A. M. Silver, A. Gangopadhyay
Summary: We demonstrate that wind-driven Ekman transport enhances the advection and mixing of cells, leading to the transport of colder water from the Surface Antarctic Waters to the warmer waters of the northern Polar Front belt. This mechanism provides cells with a favorable temperature environment, allowing for specific species and community growth rates to develop blooms under non-light limiting macronutrients and iron conditions. Our findings have important implications for increased productivity in a future warming climate.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
John E. Garzon-Cardona, Ana M. Martinez, Boris P. Koch, Bernd Krock, Elbio D. Palma, Xianyu Kong, Ruben J. Lara
Summary: This study aimed to gain a better understanding of the role of dissolved organic matter (DOM) in the biogeochemistry of the Southern Patagonian shelf. The results showed that terrigenous input is the main source of ammonium and refractory carbon in the region, while the Antarctic Circumpolar Current contributes autochthonous DOM. Additionally, regeneration processes of nitrogen-rich water were found in the Tierra del Fuego Waters and Grande Bay regions.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Manoranjan Mishra, Tamoghna Acharyya, Bijay Halder, Celso Augusto Guimara Santos, Richarde Marques da Silva, Nihar Ranjan Rout, Debdeep Bhattacharyya
Summary: This study comprehensively analyzes the impacts of Tropical Cyclone Yaas on the mangrove forest in Bhitarkanika National Park, revealing significant ecosystem loss and changes in vegetation vigor and soil conditions, particularly an increase in salinity.
JOURNAL OF MARINE SYSTEMS
(2024)