High-resolution shipboard measurements of phytoplankton: a way forward for enhancing the utility of satellite SST and chlorophyll for mapping microscale features and frontal zones in coastal waters

2016 ◽  
Author(s):  
Christy A. Jenkins ◽  
Joaquim I. Goes ◽  
Kali McKee ◽  
Helga do R. Gomes ◽  
Robert Arnone ◽  
...  
Keyword(s):  
High Resolution ◽  
Coastal Waters ◽  
Satellite Sst ◽  
Frontal Zones

scholarly journals Detection of a weak meddy-like anomaly from high-resolution satellite SST maps

2012 ◽  
Vol 76 (S1) ◽  
pp. 229-234 ◽  
Author(s):  
Mikhail Emelianov ◽  
Mariona Claret ◽  
Eugenio Fraile-Nuez ◽  
Maria Pastor ◽  
Irene Laiz ◽  
...  
Keyword(s):  
High Resolution ◽  
Satellite Sst

scholarly journals Tidal Mixing Signatures in the Hong Kong Coastal Waters from Satellite-Derived Sea Surface Temperature

2018 ◽  
Vol 11 (1) ◽  
pp. 5 ◽  
Author(s):  
R. Susanto ◽  
Jiayi Pan ◽  
Adam Devlin
Keyword(s):  
Hong Kong ◽  
High Resolution ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Coastal Waters ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Sea Surface ◽  
Tidal Mixing ◽  
Diurnal Tides

Tidal mixing in the coastal waters of Hong Kong was investigated using a combination of in situ observations and high-resolution satellite-derived sea surface temperature (SST) data. An indicator of tide-induced mixing is a fortnightly (spring-neap cycle) signature in SST due to nonlinear interactions between the two principal diurnal and the two principal semi-diurnal tides. Both semi-diurnal and diurnal tides have strong tidal amplitudes and currents near Hong Kong. As a result, both the near-fortnightly (Mf) and fortnightly (MSf) tides are enhanced due to nonlinear tidal signal interactions. In addition, these fortnightly tidal signals are modulated by seasonal variability, with the maximum seasonal modulation of fortnightly tides occurring during the monsoon transition periods in May and October. The largest fortnightly signals are found in the southwestern part of the Pearl River estuary. Tidal constituent properties vary by space and depth, and high-resolution SST plays a pivotal role in resolving the spatial characteristics of tidal mixing.

scholarly journals Adequacy of the In Situ Observing System in the Satellite Era for Climate SST

2006 ◽  
Vol 23 (1) ◽  
pp. 107-120 ◽  
Author(s):  
Huai-Min Zhang ◽  
Richard W. Reynolds ◽  
Thomas M. Smith
Keyword(s):  
High Resolution ◽  
Satellite Observations ◽  
Sea Surface ◽  
Bias Error ◽  
Random Errors ◽  
In Situ Data ◽  
Satellite Sst ◽  
Maximum Bias ◽  
Very High

Abstract A method is presented to evaluate the adequacy of the recent in situ network for climate sea surface temperature (SST) analyses using both in situ and satellite observations. Satellite observations provide superior spatiotemporal coverage, but with biases; in situ data are needed to correct the satellite biases. Recent NOAA/U.S. Navy operational Advanced Very High Resolution Radiometer (AVHRR) satellite SST biases were analyzed to extract typical bias patterns and scales. Occasional biases of 2°C were found during large volcano eruptions and near the end of the satellite instruments’ lifetime. Because future biases could not be predicted, the in situ network was designed to reduce the large biases that have occurred to a required accuracy. Simulations with different buoy density were used to examine their ability to correct the satellite biases and to define the residual bias as a potential satellite bias error (PSBE). The PSBE and buoy density (BD) relationship was found to be nearly exponential, resulting in an optimal BD range of 2–3 per 10° × 10° box for efficient PSBE reduction. A BD of two buoys per 10° × 10° box reduces a 2°C maximum bias to below 0.5°C and reduces a 1°C maximum bias to about 0.3°C. The present in situ SST observing system was evaluated to define an equivalent buoy density (EBD), allowing ships to be used along with buoys according to their random errors. Seasonally averaged monthly EBD maps were computed to determine where additional buoys are needed for future deployments. Additionally, a PSBE was computed from the present EBD to assess the in situ system’s adequacy to remove potential future satellite biases.

scholarly journals XÂY DỰNG KHUNG CƠ SỞ DỮ LIỆU SỐ VỀ HẢI DƯƠNG, MÔI TRƯỜNG VÙNG BIỂN NINH THUẬN - BÌNH THUẬN

2018 ◽  
Vol 17 (4) ◽  
pp. 445-458
Author(s):  
Ngo Manh Tien ◽  
Nguyen Huu Huan ◽  
Tran Van Chung ◽  
Tong Phuoc Hoang Son ◽  
Vo Trong Thach ◽  
...  
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
Coastal Waters ◽  
Remote Sensing Imagery ◽  
Digital Database ◽  
Multi Temporal

This paper presents the building and designing of the digital database frame about the oceanographic and environmental elements of the coastal waters of Ninh Thuan and Binh Thuan provinces, based on the integration of data from the observed, multi-temporal remote sensing as well as simulated sources. Especially, VNREDSat-1 the first remote sensing imagery of Vietnam with high resolution also got the attention in building the digital database frame. The building of the digital database frame is the first important step in order to achieve an overview of data’s structure, then to build the database’s structure. The database’s structure is built in the form of B-tree which optimize the operation when updating the data.

scholarly journals Oceanic adults, coastal juveniles: tracking the habitat use of whale sharks off the Pacific coast of Mexico

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3271 ◽  
Author(s):  
Dení Ramírez-Macías ◽  
Nuno Queiroz ◽  
Simon J. Pierce ◽  
Nicolas E. Humphries ◽  
David W. Sims ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Gulf Of California ◽  
Pacific Coast ◽  
Early Morning ◽  
Eastern Pacific Ocean ◽  
Archival Tags ◽  
The Pacific ◽  
Habitat Differences ◽  
Frontal Zones ◽  
Whale Sharks

Eight whale sharks tagged with pop-up satellite archival tags off the Gulf of California, Mexico, were tracked for periods of 14–134 days. Five of these sharks were adults, with four females visually assessed to be pregnant. At least for the periods they were tracked, juveniles remained in the Gulf of California while adults moved offshore into the eastern Pacific Ocean. We propose that parturition occurs in these offshore waters. Excluding two juveniles that remained in the shallow tagging area for the duration of tracking, all sharks spent 65 ± 20.7% (SD) of their time near the surface, even over deep water, often in association with frontal zones characterized by cool-water upwelling. While these six sharks all made dives into the meso- or bathypelagic zones, with two sharks reaching the maximum depth recordable by the tags (1285.8 m), time spent at these depths represented a small proportion of the overall tracks. Most deep dives (72.7%) took place during the day, particularly during the early morning and late afternoon. Pronounced habitat differences by ontogenetic stage suggest that adult whale sharks are less likely to frequent coastal waters after the onset of maturity.

High-resolution 3D Forecasting System for Barcelona's beaches and coastal waters

2021 ◽  
Author(s):  
María Liste Muñoz ◽  
Marc Mestres Ridge ◽  
Manuel Espino Infantes ◽  
Agustín Sánchez-Arcilla ◽  
Manuel García León ◽  
...  
Keyword(s):  
Sediment Transport ◽  
High Resolution ◽  
Coastal Waters ◽  
Numerical Models ◽  
Ocean Model ◽  
Coastal Areas ◽  
Rip Currents ◽  
The European Union ◽  
Informed Decisions ◽  
Prediction Systems

<p>The ocean is an essential part of the planet that plays a crucial role in the global life system and provides vital resources for humanity. Coastal areas are the most affected by direct pressure from human activity, and their management is very complex due to the multiple interconnected processes that occur there. To conserve and protect our coastal areas, we must observe and understand how they interact. Despite its paramount importance to society, there are fundamental gaps in coastal observing and modelling. Therefore, current forecasting systems limit our capacity to manage this narrow border between land and sea sustainably. Improved numerical models and sustained observations of our ocean are needed to make informed decisions and ensure that human-coastal interaction is sustainable and safe.</p><p>EuroSea initiative is an innovation action of the European Union entitled "Improvement and integration of the European oceans Observation and prediction systems for the sustainable use of the oceans'. EuroSea brings together the leading European players in the ocean observation and forecasting with users of oceanographic products and services and provides high-resolution coastal operational prediction systems in domains such as ports, beaches and nearby coastal waters.</p><p>In the EuroSea project framework, we present a 3D hydrodynamic tool to improve Barcelona's beaches' inner dynamics solution. We use the Coupled Ocean-Atmosphere - Wave - Sediment Transport (COAWST) Modeling System that utilizes the Model Coupling Toolkit to exchange prognostic variables between the ocean model ROMS, wave model SWAN, and the Community Sediment Transport Modeling System (CSTMS) sediment routines. As part of the system, the wave and ocean models run with nested, refined, spatial grids to provide increased resolution, scaling down to resolve nearshore wave-driven flows, all within selected regions of a larger, coarser-scale coastal modelling system.</p><p>Bathymetry was built using a combination of bathymetric data from EMODnet (European Marine Observation and Data Network), and specific high-resolution sources provided by local authorities. Copernicus products have driven these high-resolution simulations.</p><p>Results have been validated with field campaigns data, displaying preliminary agreements between model outputs and in-situ observations. The model provides results that will be used to study interactions between sea-level hazards, economic activity, and risk. These results will develop new forecast capabilities, such as erosion and flooding, rip currents, floating debris and flushing times.</p><p>Finally, we look ahead to the future of the operational prediction systems as useful tools to make informed decisions, minimize risks and improve environmental management.</p>

Eddy Formation near San Simeon

1977 ◽  
Vol 58 (3) ◽  
pp. 233-234
Author(s):  
Henry W. Brandli ◽  
John W. Orndorff ◽  
Francis L. Guiberson
Keyword(s):  
High Resolution ◽  
Satellite Imagery ◽  
Coastal Waters ◽  
Early Morning ◽  
Synoptic Situation ◽  
Eddy Formation ◽  
Low Cloud ◽  
Very High ◽  
Cloud Pattern

A unique example of early morning and noontime very high resolution (0.62 km) visual satellite imagery is presented depicting a well-defined eddy over California coastal waters west of San Simeon. In addition to the low cloud vortex, the pictures vividly display the dissipation or movement of stratoform clouds. The synoptic situation during the occurrence of this eddy formation and cloud dissipation is also presented as a source of possible explanations of the cloud pattern.

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