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This book covers topics ranging from a detailed error analysis of SSTs to new applications employed, for example, in the study of the El Niño–La Niña Southern Oscillation, lake temperatures, and coral bleaching. New techniques for interpolation and algorithm development are presented, including improvements for cloud detection. Analysis of the pixel-to-pixel uncertainties provides insight to applications for high spatial resolutions. New approaches for the estimation and evaluation of SSTs are presented. In addition, an overview of the Climate Change Initiative, with specific applications to SST, is presented. The book provides an excellent overview of the current technology, while also highlighting new technologies and their applications to new missions.
Infrared --- Microwave --- Sea Surface Temperature --- Climate Data Records --- Group for High Resolution Sea Surface Temperature
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Marine heatwaves (MHWs) are discrete warm-water anomalies events occurring in every ocean around the globe, in both coastal and open ocean, having major impacts on ecosystems, fisheries and aquaculture. Although processes leading to MHWs formation are becoming more and more studied since the beginning of the 2010s, the way they interact together to trigger MHWs remains not fully understood. Nevertheless, their link to human-induced global warming tends to be certain. The southern part of Chile (41°5’S - 56°S) is characterized by fjord ecosystems already experiencing global warming consequences, whether large-scale or local climate modifications. However, to the best of our knowledge, MHWs occurrence in Southern Chile has never been subject to studies, despite the fjord ecosystem’s vulnerability to climate warming. Therefore, we assessed a global analysis of the MHWs that have occurred between 1982 and 2020 along Central and South coastal Chile, from 29°S to 55°S. We found that the last decade was record-breaking in terms of duration, intensity and occurrence of MHWs. In 2016, succession of MHWs during austral autumn, winter and spring lead to the formation of the longest (148 days, almost 5 months) and most extreme events (2.25°C above the climatology) ever recorded along Chile between 1982 and 2020. Those events were due to the advection of warm-waters anomalies coming from the open ocean and combination of persisting high pressure system with lower winds having led to reduced heat transfer from the ocean to the atmosphere. In addition, a global context of positive phases of El Niño Southern Oscillation and Southern Annular Mode contributed to the MHWs formation. Les vagues de chaleur marine, ou marine heatwaves (MHWs), sont des évènements discrets caractérisés par des eaux anormalement chaudes. Elles se produisent dans tous les océans, que ce soit en milieu côtier ou en pleine mer, et impactent fortement les écosystèmes marins, mais également les pêcheries et l’aquaculture. Bien que les processus menant à la formation de tels évènements soient de plus en plus étudiés depuis le début des années 2010, les interactions qu’ils ont entre eux pour conduire à la formation de MHWs restent encore relativement méconnues. Il est cependant de plus en plus certain que les MHWs sont liées au réchauffement climatique anthropique. Le sud du Chili (41°5’S – 46°S) est constitué d’un ensemble de fjords où les conséquences du réchauffement climatique se font déjà ressentir, que ce soient des modifications climatiques à l’échelle locale ou régionale. Cependant, d’après nos connaissances, il n’y a jamais eu d’étude portant sur les MHWs dans cette région du monde. Par conséquent, nous avons réalisé une étude globale des MHWs qui se sont produites entre 1982 et 2020 le long des côtes du Centre et du Sud du Chili, de 29°S à 55°S. Nous avons trouvé que la dernière décennie a été marquée par des MHWs particulièrement longues et fortes, et qu’elles se sont produites en plus grand nombre. En 2016, plusieurs MHWs se sont succédées de l’automne jusqu’au printemps australs, conduisant à la formation de la plus longue MHW (148 jours) et de la plus extrême (2.25°C au-dessus de la climatologie). Ces MHWs se sont produits suite au transport près des côtes d’eaux anormalement chaudes en provenance du Pacifique extratropical, associées à des hautes pressions stationnaires et une réduction des vents conduisant à une diminution des échanges de chaleur entre l’océan et l’atmosphère, en partie liés à des phases positives de El Niño Southern Oscillation et du Southern Annular Mode.
marine heatwave --- Pacific Ocean --- Patagonia --- Chile --- sea surface temperature --- sea surface temperature anomaly --- SST --- El Niño Southern Oscillation --- Southern Annular Mode --- marine heatwave --- Océan Pacifique --- Patagonie --- Chili --- El Niño Southern Oscillation --- Southern Annular Mode --- SST --- vague de chaleur marine --- Sciences du vivant > Sciences aquatiques & océanologie
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This Special Issue gathers papers reporting research on various aspects of remote sensing of Sea Surface Salinity (SSS) and the use of satellite SSS in oceanography. It includes contributions presenting improvements in empirical or theoretical radiative transfer models; mitigation techniques of external interference such as RFI and land contamination; comparisons and validation of remote sensing products with in situ observations; retrieval techniques for improved coastal SSS monitoring, high latitude SSS and the assessment of ocean interactions with the cryosphere; and data fusion techniques combining SSS with sea surface temperature (SST). New instrument technology for the future of SSS remote sensing is also presented.
n/a --- satellite salinity --- one-dimensional (1D) aperture synthesis radiometer --- smos --- Gulf of Maine --- retrieval errors --- Aquarius --- combined active/passive SSS retrieval algorithm --- ocean surface roughness --- upwelling --- salt transport --- quality assessment --- sea ice --- SMOS --- microwave radiometry --- Arctic Gateways --- Aquarius satellite --- validation --- sea surface temperature --- water transport --- forward model --- river discharge --- sea surface salinity --- remote sensing --- retrieval algorithm --- Water Cycle Observation Mission (WCOM) --- SMAP --- microwave remote sensing --- alboran sea --- surface velocity --- Arctic Ocean --- sea surface salinity (SSS) --- coastal --- brightness temperature (TB) --- interferometric microwave imager (IMI) --- Scotian Shelf --- MICAP --- different instrument configurations --- bias characteristics --- mediterranean sea --- Gulf of Mexico --- calibration --- retroflections --- Arctic ocean --- salinity --- Sea Surface Salinity --- Arctic rivers --- Argo --- data processing --- aquarius --- ocean salinity --- Aquarius Validation Data System (AVDS)
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Monitoring oceans and coastal areas has a fundamental social impact, and this scenario is made still more challenging with the present and future issues related to climate change. In this context, radar systems have gained increasing interest, since they are remote sensing devices capable of providing information about sea waves, currents, tides, bathymetry, and wind. Moreover, radar systems can be designed to perform both large-scale and small-scale monitoring, with different spatial and temporal resolutions, and can be installed on different observation platforms (ship-based, ground-based, airborne, satellite or drones). In this regard, this book aims at engendering a virtual forum for ocean radar researchers, where state-of-the-art methodologies and applications concerning ocean monitoring by means of radar technologies are reviewed and discussed.
History of engineering & technology --- HF radar --- monitoring --- circulation --- Atlantic Jet --- flow reversal --- Gibraltar --- Alboran Sea --- X-band radar --- tidal variation --- modified temporal waterline method --- shoreline position --- intertidal foreshore slope --- wave run-up correction --- current velocity measurement --- high-frequency (HF) radar oceanography --- remote sensing --- quality control --- coastal surface currents --- soft computing --- radar --- sensitivity experiments --- numerical model --- artificial neural network --- inversion --- radar cross-section --- monostatic radar --- ocean wave directional spectrum --- TensorFlow --- wave directional spectra --- spatial wave fields --- ADCP --- wave buoy --- significant wave height --- marine radar --- sea state monitoring --- scum --- hypertrophic ecosystem --- Sentinel-1 --- Sentinel-2 --- Sentinel-3 --- cloudiness --- high-frequency ocean radar --- interference mitigation --- frequency band adaptation --- high frequency radar --- sea surface temperature --- surface currents --- south-west Australia --- synthetic aperture radar --- Doppler anomaly --- sea surface currents --- Gulf of Naples --- augmented observatory --- wave field --- radar Doppler altimeter --- orbital velocities --- waveforms --- swell --- radar altimeter --- sea surface current
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Ocean satellite remote sensing plays important roles in the observations of physical, biological and biogeochemical features in inland, coastal, and global ocean waters, with high temporal and spatial resolution. The satellite-measured ocean products are used for near-real-time ocean monitoring and climate data records to understand short-/long-term variabilities in marine environments and ecosystems as well as for decision making tools to manage social, economic, and environmental benefits. Validation/evaluation including a combination of field measurements and inter-satellite comparison is an essential step in providing more accurate satellite-derived ocean products. In this Special Issue, 14 papers have been published and include research on validation/evaluation, retrieval algorithms of ocean geophysical and biogeochemical parameters, and application of the satellite ocean products in the regional and global ocean. Subjects treated include: Sea Surface Temperature; Sea Ice Surface Temperature from VIIRS thermal infrared sensor; Sea Ice Detection from Spectroradiometer; Sea Surface Winds from HY-2A Scatterometer and GNSS—Reflectometry; Wave Height from Sentinel-3A SAR; Retrievals of Sea Surface Salinity, Chlorophyll-a, Particulate Organic Carbon, Particulate Backscattering, Marine Fishery resource, and Submesoscale Eddies from multiple Ocean Colour sensors.
Research & information: general --- sea ice --- ice surface temperature --- Suomi NPP --- JPSS --- remote sensing --- leads --- MODIS --- ocean color --- algorithm --- chlorophyll --- HPLC --- fluorometry --- particulate organic carbon --- southern ocean --- ocean colour --- satellite-derived chlorophyll-a concentration --- algorithm evaluation --- Northwest Atlantic --- Northeast Pacific --- Japanese common squid --- Todarodes pacificus --- habitat suitability index (HSI) --- the Yellow Sea --- the South Sea of South Korea --- spaceborne GNSS-R --- DDM --- ocean surface wind speed --- GMF --- CYGNSS --- HY-2A --- scatterometer --- sea surface wind field --- evaluation --- satellite altimetry --- significant wave height --- SAR --- wave buoy observations --- validation --- southwest England --- coastal altimetry --- Sentinel-3A --- SRAL --- particulate optical backscattering --- Raman scattering --- QAA algorithm --- ESA OC-CCI --- steric height --- sea level variability --- interferometric altimeter validation --- high-frequency radar --- MODIS ocean color patterns --- submesoscale eddies --- sea surface salinity estimation --- Changjiang diluted water --- neural network --- GOCI application --- sea surface temperature --- global gridded dataset --- Yellow Sea --- bias correction --- chlorophyll-a --- phytoplankton --- East/Japan Sea
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This thematic issue presents 11 scientific articles that are extremely useful for understanding the processes and phenomena of the interacting geospheres of the Earth. These processes have an important impact on the biosphere and many human activities. The results of scientific research presented in this book are fully united by the common theme "investigation of the fundamental foundations of the emergence, development, transformation, and interaction of hydroacoustic, hydrophysical and geophysical fields in the World Ocean." The book is recommended to a wide range of readers, as well as to specialists in the field of hydroacoustics, oceanology, and geophysics.
gravitational waves --- pressure variations --- period variation --- laser meter of hydrosphere pressure variations --- infragravity waves --- gravity wind waves --- laser strainmeter --- typhoon --- mesoscale eddy --- parabolic equation --- normal mode --- mesoscale vortex --- acoustic propagation --- AIPOcean --- OW method --- COMSOL software --- sea surface --- wave spectra --- satellite imagery processing --- aerospace monitoring --- sea waves --- retrieving operator --- Scholte wave --- theoretical dispersion curve --- stiffness matrices --- layered media --- wind waves --- progressive waves --- standing waves --- primary microseisms --- secondary microseisms --- wave dynamics --- wave transformation --- swell --- tides --- seiches --- remote probing --- space monitoring --- nonlinearity --- modulation --- oceanic front --- ray theory --- horizontal refraction --- coastal video monitoring --- streaming video --- image and video processing --- real-time mode --- subpixel resolution --- underwater currents --- microseisms --- coastal water areas --- red tide --- harmful algal bloom --- sea surface height --- sea surface temperature --- chlorophyll-a --- biogenic slicks --- river runoff --- Kamchatka --- earthquake --- tsunami --- deformation jump --- sine-Gordon equation --- kink --- anti-kink --- underwater landslide --- n/a
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Ocean satellite remote sensing plays important roles in the observations of physical, biological and biogeochemical features in inland, coastal, and global ocean waters, with high temporal and spatial resolution. The satellite-measured ocean products are used for near-real-time ocean monitoring and climate data records to understand short-/long-term variabilities in marine environments and ecosystems as well as for decision making tools to manage social, economic, and environmental benefits. Validation/evaluation including a combination of field measurements and inter-satellite comparison is an essential step in providing more accurate satellite-derived ocean products. In this Special Issue, 14 papers have been published and include research on validation/evaluation, retrieval algorithms of ocean geophysical and biogeochemical parameters, and application of the satellite ocean products in the regional and global ocean. Subjects treated include: Sea Surface Temperature; Sea Ice Surface Temperature from VIIRS thermal infrared sensor; Sea Ice Detection from Spectroradiometer; Sea Surface Winds from HY-2A Scatterometer and GNSS—Reflectometry; Wave Height from Sentinel-3A SAR; Retrievals of Sea Surface Salinity, Chlorophyll-a, Particulate Organic Carbon, Particulate Backscattering, Marine Fishery resource, and Submesoscale Eddies from multiple Ocean Colour sensors.
sea ice --- ice surface temperature --- Suomi NPP --- JPSS --- remote sensing --- leads --- MODIS --- ocean color --- algorithm --- chlorophyll --- HPLC --- fluorometry --- particulate organic carbon --- southern ocean --- ocean colour --- satellite-derived chlorophyll-a concentration --- algorithm evaluation --- Northwest Atlantic --- Northeast Pacific --- Japanese common squid --- Todarodes pacificus --- habitat suitability index (HSI) --- the Yellow Sea --- the South Sea of South Korea --- spaceborne GNSS-R --- DDM --- ocean surface wind speed --- GMF --- CYGNSS --- HY-2A --- scatterometer --- sea surface wind field --- evaluation --- satellite altimetry --- significant wave height --- SAR --- wave buoy observations --- validation --- southwest England --- coastal altimetry --- Sentinel-3A --- SRAL --- particulate optical backscattering --- Raman scattering --- QAA algorithm --- ESA OC-CCI --- steric height --- sea level variability --- interferometric altimeter validation --- high-frequency radar --- MODIS ocean color patterns --- submesoscale eddies --- sea surface salinity estimation --- Changjiang diluted water --- neural network --- GOCI application --- sea surface temperature --- global gridded dataset --- Yellow Sea --- bias correction --- chlorophyll-a --- phytoplankton --- East/Japan Sea
Choose an application
Monitoring oceans and coastal areas has a fundamental social impact, and this scenario is made still more challenging with the present and future issues related to climate change. In this context, radar systems have gained increasing interest, since they are remote sensing devices capable of providing information about sea waves, currents, tides, bathymetry, and wind. Moreover, radar systems can be designed to perform both large-scale and small-scale monitoring, with different spatial and temporal resolutions, and can be installed on different observation platforms (ship-based, ground-based, airborne, satellite or drones). In this regard, this book aims at engendering a virtual forum for ocean radar researchers, where state-of-the-art methodologies and applications concerning ocean monitoring by means of radar technologies are reviewed and discussed.
HF radar --- monitoring --- circulation --- Atlantic Jet --- flow reversal --- Gibraltar --- Alboran Sea --- X-band radar --- tidal variation --- modified temporal waterline method --- shoreline position --- intertidal foreshore slope --- wave run-up correction --- current velocity measurement --- high-frequency (HF) radar oceanography --- remote sensing --- quality control --- coastal surface currents --- soft computing --- radar --- sensitivity experiments --- numerical model --- artificial neural network --- inversion --- radar cross-section --- monostatic radar --- ocean wave directional spectrum --- TensorFlow --- wave directional spectra --- spatial wave fields --- ADCP --- wave buoy --- significant wave height --- marine radar --- sea state monitoring --- scum --- hypertrophic ecosystem --- Sentinel-1 --- Sentinel-2 --- Sentinel-3 --- cloudiness --- high-frequency ocean radar --- interference mitigation --- frequency band adaptation --- high frequency radar --- sea surface temperature --- surface currents --- south-west Australia --- synthetic aperture radar --- Doppler anomaly --- sea surface currents --- Gulf of Naples --- augmented observatory --- wave field --- radar Doppler altimeter --- orbital velocities --- waveforms --- swell --- radar altimeter --- sea surface current
Choose an application
Monitoring oceans and coastal areas has a fundamental social impact, and this scenario is made still more challenging with the present and future issues related to climate change. In this context, radar systems have gained increasing interest, since they are remote sensing devices capable of providing information about sea waves, currents, tides, bathymetry, and wind. Moreover, radar systems can be designed to perform both large-scale and small-scale monitoring, with different spatial and temporal resolutions, and can be installed on different observation platforms (ship-based, ground-based, airborne, satellite or drones). In this regard, this book aims at engendering a virtual forum for ocean radar researchers, where state-of-the-art methodologies and applications concerning ocean monitoring by means of radar technologies are reviewed and discussed.
History of engineering & technology --- HF radar --- monitoring --- circulation --- Atlantic Jet --- flow reversal --- Gibraltar --- Alboran Sea --- X-band radar --- tidal variation --- modified temporal waterline method --- shoreline position --- intertidal foreshore slope --- wave run-up correction --- current velocity measurement --- high-frequency (HF) radar oceanography --- remote sensing --- quality control --- coastal surface currents --- soft computing --- radar --- sensitivity experiments --- numerical model --- artificial neural network --- inversion --- radar cross-section --- monostatic radar --- ocean wave directional spectrum --- TensorFlow --- wave directional spectra --- spatial wave fields --- ADCP --- wave buoy --- significant wave height --- marine radar --- sea state monitoring --- scum --- hypertrophic ecosystem --- Sentinel-1 --- Sentinel-2 --- Sentinel-3 --- cloudiness --- high-frequency ocean radar --- interference mitigation --- frequency band adaptation --- high frequency radar --- sea surface temperature --- surface currents --- south-west Australia --- synthetic aperture radar --- Doppler anomaly --- sea surface currents --- Gulf of Naples --- augmented observatory --- wave field --- radar Doppler altimeter --- orbital velocities --- waveforms --- swell --- radar altimeter --- sea surface current
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