Article
Environmental Sciences
Celia Marlowe, Kieran Hyder, Martin D. J. Sayer, Jan Kaiser
Summary: This study evaluates the robustness of dive computer temperature data for the Red Sea. The results show that dive computers can accurately resolve seasonal temperature patterns and are in good agreement with other data sources. However, there is a bias in the dive computer temperatures compared to other sources, which is associated with temperature gradients. Overall, dive computers offer potential as an alternative source of depth-resolved temperatures.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Xiaolei Chen, Xiao Ma, Xueji Gu, Sumei Liu, Guodong Song, Haiyan Jin, Guiling Zhang
Summary: Continental shelves and estuaries are important regions for the production and emission of N2O, with variations in distribution and emissions affected by temperature gradients, currents, and riverine inputs. N2O concentrations peak in spring and decrease sharply in summer and fall, with higher emissions in the ECS compared to the SYS. Sediments, especially around the Yangtze River Estuary, are identified as significant benthic N2O sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Linjie Zhang, Lilan Zhang, Yue Shi, Zhihui Yang, Qijun Gong, Dong Sun
Summary: This study developed a method to quantify the variability of oceanic PAHs based on wind frequency and wind-speed-weighted wind frequency. The validity of this method was tested using in-situ survey data and publicly available data from other monsoonal open oceans. The results showed that wind frequency and wind-speed-weighted wind frequency could better explain the variation of dissolved and particulate PAHs in the surface ocean, respectively. This study suggests that the influence of seasonal atmospheric transport is important in describing and interpreting the distribution patterns of PAHs in monsoon-influenced low and mid-latitude open oceans, and provides a reference method for understanding the global-scale distribution patterns of PAHs in the ocean.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Geosciences, Multidisciplinary
Matthew T. Jenkins, Aiguo Dai
Summary: In this study, seasonal variations in Arctic climate feedbacks and their relationship to sea-ice loss were investigated using ERA5 reanalysis data. The results showed that spring and summer experienced significant sea-ice loss, strong surface albedo feedback, and large oceanic heat uptake. Arctic clouds had a small net cooling effect in May-June-July but a moderate warming effect during the cold season, particularly in areas with substantial sea-ice loss. Arctic water vapor feedback reached its peak in summer but was weak and unrelated to sea-ice loss. Arctic positive lapse rate feedback (LRF) was strongest in winter over regions with significant sea-ice loss and weak inversion but was uncorrelated with atmospheric stability, indicating that oceanic heating from sea-ice loss led to enhanced surface warming and positive LRF.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Yimin Zhang, Wei Yang, Wei Zhao, Yongli Zhang, Jiawei Shen, Hao Wei
Summary: The spatial distribution and seasonal variation of near-inertial kinetic energy (NIKE) in the upper Ross Sea (RS) are examined using a sea ice physical-biological coupled model. The annual-mean surface and mixed layer-integrated NIKE have large values at specific areas in the RS, mainly influenced by near-inertial wind stress magnitude (NIWSM) as the energy source. The presence of sea ice and the change of mixed layer depth (MLD) also contribute to the spatial and seasonal variations of NIKE.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Shineng Hu, Shang-Ping Xie, Richard Seager, Mark A. Cane
Summary: Tropical rainfall variations have direct societal relevance and influence global climate variations through tele-connections. We analyzed 40 years of monthly observations and found that sea surface temperature threshold (SSTthr) varies by up to 4°C in space and with season. Based on local convective instability, we developed a quantitative theory that explains the variations in SSTthr using the climatological state of the tropical atmosphere.
JOURNAL OF CLIMATE
(2023)
Article
Geosciences, Multidisciplinary
Jinping Wang, John A. Church, Xuebin Zhang, Jonathan M. Gregory, Laure Zanna, Xianyao Chen
Summary: By combining new estimates of various factors, we find that the sea-level trends observed at 272 tide gauges distributed globally agree with the sum of contributions, indicating that the local sea-level budget is essentially closed. Sea-level changes are mainly influenced by ocean dynamics and glacial isostatic adjustment.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Review
Oceanography
Elena Eriksen, Hein Rune Skjoldal, Andrey V. Dolgov, Espen Strand, Felicia Keulder-Stenevik, Irina P. Prokopchuk, Tatiana A. Prokhorova, Dmitry Prozorkevich, Aleksander N. Benzik
Summary: The study found that the trophic structure of fish communities in the Barents Sea shows some variations in both spatial and seasonal aspects. However, the main groups of piscivores, planktivores, and benthivores remain consistent across seasons. Planktivores, especially, show clear signs of seasonality as they rely on the 'pulse' of new generations of zooplankton, such as Calanus finmarchicus, developing in spring and summer.
PROGRESS IN OCEANOGRAPHY
(2021)
Review
Oceanography
Siby Kurian, Damodar M. Shenoy, V. P. Akhi, Pratima M. Kessarkar, Mangesh Gauns, Suhas S. Shetye, Muhamed Kabeer, Apsara P. Vijayan, Anand Methar, Supriya Karapurkar, A. V. Chndrasekhararao, S. W. A. Naqvi
Summary: Sediment traps were used to study particle sinking in the ocean water column. Data on fluxes, concentrations, and isotopic composition of carbon and nitrogen were collected from three traps deployed at different depths in the Bay of Bengal. The study highlights the seasonal and inter-annual variations in riverine suspended particulate material and emphasizes the need for continued time-series studies to understand long-term changes in component fluxes.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Igor Medvedev, Alisa Medvedeva
Summary: This study examines the variance changes of synoptic and mesoscale sea level oscillations in the Baltic Sea on seasonal and decadal scales. It finds that the variance of sea level oscillations is highest in winter due to increased cyclonic activity in the atmosphere. Additionally, there is a high correlation between sea level oscillations, wind variations, and atmospheric indices in winter, while the correlation is lower in summer.
Article
Meteorology & Atmospheric Sciences
Juan Li, Wei Tan, Wenjin Sun, Lina Yang, Lei Lin, Qingjun Fu
Summary: This paper evaluates the different timescale contributions to sea-level variation in the South China Sea (SCS). The large variance of the sea-level anomaly can account for over 70% of the monthly sea-level variation in specific areas. On the interannual-to-decadal timescale, there are two large-value regions with different dominating factors. The decadal variation is influenced by ENSO and PDO, while the interannual variation is controlled by the SCS summer monsoon.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Fisheries
Mohamed Ahmed Abu El-Regal, James G. Ditty
Summary: This study describes the larval stages and seasonal variation in abundance of three mesopelagic species near coral reef areas in the Red Sea. The larvae are most abundant during the cooler months and mainly in the preflexion stage.
Article
Environmental Sciences
JeongHee Shim, Mi-Ju Ye, Jae-Hyun Lim, Jung-No Kwon, Jeong Bae Kim
Summary: Mixed results have been reported on evaluating the coastal carbon cycle and its global contribution, mainly due to limited observational data and spatiotemporal variability. This study in the Jinhae-Geoje-Tongyeong bay region of the southeastern Korean Peninsula found that pCO(2) in surface seawater was mainly influenced by temperature and affected by complex biogeochemical factors. The study also highlighted the impact of a red tide event in August 2014 on CO2 levels, indicating the importance of considering non-thermal factors in carbon cycle assessments.
FRONTIERS IN MARINE SCIENCE
(2021)
Review
Oceanography
Juan Li, Xiaoming Zhai, Junliang Liu, Tong Yan, Yinghui He, Zhiwu Chen, Shuqun Cai
Summary: The spatial distribution and seasonal variation of near-inertial kinetic energy in the upper ocean of the South China Sea were examined, showing a rapid decay with depth and a significant seasonal cycle influenced by atmospheric wind forcing.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Oceanography
Yuqi Wu, Jieshuo Xie, Jiexin Xu, Zhiwu Chen, Yinghui He, Shuqun Cai
Summary: The geographical and seasonal distribution of kinematic parameters of internal solitary waves in the Andaman Sea are studied by considering the horizontal variability in density stratification and background currents. The phase speed and dispersion parameter are mainly determined by topographic features and show limited seasonal variation, while the nonlinear parameters exhibit significant seasonal variation. The background flow has a great influence on the nonlinear parameters.
ACTA OCEANOLOGICA SINICA
(2022)
