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Changes in sea surface roughness are usually associated with a change in the sea surface wind field. This interaction has been exploited to measure sea surface wind speed by scatterometry. A number of features on the sea surface associated with changes in roughness can be observed by synthetic aperture radar (SAR) because of the change in Bragg backscatter of the radar signal by damping of the resonant ocean capillary waves. With various radar frequencies, resolutions, and modes of polarization, sea surface features have been analyzed in numerous campaigns, bringing various datasets together, thus allowing for new insights into small-scale processes at a larger areal coverage. This Special Issue aims at investigating sea surface features detected by high spatial resolution radar systems, such as SAR.
dispersion curve filtering --- n/a --- Synthetic Aperture Radar --- RADARSAT Constellation Mission (RCM) --- marine X-band radar --- compact polarization (CP) --- cross-polarization --- proper orthogonal decomposition --- rain --- right circular horizontal polarization model --- support vector machines --- Sentinel-1 --- wind speed --- wave height --- hurricane --- ocean surface waves --- SMAP --- Copernicus --- synthetic aperture radar --- co-polarized phase difference --- synthetic aperture radar (SAR) --- oceans --- fetch- and duration-limited wave growth relationships --- Wake detection --- air-sea interaction --- phase-resolved wave fields --- wind --- SAR --- CoVe-Pol and CoHo-Pol models --- Baltic Sea --- wind retrieval --- ocean surface wind speed retrieval --- CMEMS --- detectability model --- right circular vertical polarization model --- hurricane internal dynamical process --- ocean winds --- polarimetry --- sea surface roughness --- eyewall replacement cycles --- GF-3 --- dual-polarization --- quad-polarized SAR --- typhoon/hurricane-generated wind waves --- coast and ocean observation --- radar --- geophysical model function (GMF) --- Doppler radar
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Different types of pressures, such as nutrients, micropollutants, microbes, nanoparticles, microplastics, or antibiotic-resistant genes, endanger the quality of water bodies. Evidence-based pollution control needs to be built on the three basic elements of water governance: Monitoring, modeling, and management. Monitoring sets the empirical basis by providing space- and time-dependent information on substance concentrations and loads, as well as driving boundary conditions for assessing water quality trends, water quality statuses, and providing necessary information for the calibration and validation of models. Modeling needs proper system understanding and helps to derive information for times and locations where no monitoring is done or possible. Possible applications are risk assessments for exceedance of quality standards, assessment of regionalized relevance of sources and pathways of pollution, effectiveness of measures, bundles of measures or policies, and assessment of future developments as scenarios or forecasts. Management relies on this information and translates it in a socioeconomic context into specific plans for implementation. Evaluation of success of management plans again includes well-defined monitoring strategies. This book provides an important overview in this context.
diffuse pollution --- field mapping --- storm drains --- Bayesian statistics --- distributed modelling --- PhosFate --- water quality --- analysis method --- chromaticity measurement --- surface fitting --- concentration of dissolved matter --- Copernicus Programme --- ACOLITE --- flooding --- quasi-real time monitoring --- inundation mapping --- suspended matter --- Spain --- cyanobacteria --- Microcystis aeruginosa --- water --- monitoring --- spectrophotometry --- derivative absorbance --- model evaluation --- nitrogen --- nutrient retention --- phosphorus --- sediment --- constructed wetland --- water resources management --- eutrophication --- unmanned surface vehicle --- water monitoring --- ensemble learning --- dynamic power management --- observational process ontology --- water quality monitoring --- water pollution alert --- semantic discovery --- water quality status --- sources and pathways --- land cover --- digital elevation model --- urban river --- ArcGIS --- modeling --- CSO --- urban drainage --- sewer system --- trace pollutants --- urban runoff --- concentration duration frequency curve --- MONERIS --- diffuse nutrient emission --- empirical modeling --- river basin management plan of Hungary --- effectiveness of measures --- scenarios and forecasts --- socioeconomic context --- sources and pathways of water pollution --- system understanding --- water governance --- water quality statuses and trends --- water pollution control
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The Special Issue collects papers showing the progress made in key areas of photogrammetry and remote sensing such as modern and/or forthcoming sensors, improvements in data processing strategies and assessment of their reliability, application of innovations as proof of the contribution offered in the observation of the natural and built environment with better understanding of phenomena at required spatial scale.
VHR tri-stereo satellite imagery --- digital elevation model --- isolated objects --- dense image matching --- change detection --- natural disasters --- deep learning --- threshold selection --- optical flow estimation --- Structure from Motion (SfM) --- 3D reconstruction --- noise estimation --- point clouds --- roughness --- surface reconstruction --- mesh model --- visibility constraints --- volumetric methods --- dense point cloud --- multiple view stereo (MVS) --- dense image matching (DIM) --- photogrammetry --- computer vision --- Copernicus --- Sentinel-1 --- Sentinel-2 --- InSAR --- damage proxy map --- Beirut --- Lebanon --- explosion --- radiometric calibration --- modeling --- geometric error --- high-precision calibration --- n/a --- preprocessing --- enhancement --- point cloud --- image processing --- image histogram --- UAV --- camera calibration --- GNSS-assisted block orientation --- dome effect --- Monte Carlo simulation --- soil moisture content --- artificial neural network --- sample optimization --- synthetic aperture radar --- optical remote sensing image
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Ocean color measured by satellite-mounted optical sensors is an essential climate variable that is routinely used as a central element for assessing the health and productivity of marine ecosystems and the role of oceans in the global carbon cycle. For satellite ocean color to be reliable and used in these and other important environmental applications, the data must be trustworthy and high quality. Pre-flight and on-board calibration of satellite ocean color sensors is conducted; however, once in orbit, the data quality can only be fully assessed via independent calibration and validation activities using surface measurements. These measurements therefore need to be at least as high quality as the satellite data, which necessitates SI traceability and a full uncertainty budget. This is the basis for fiducial reference measurements (FRMs) and the FRM4SOC project, which was an European Space Agency (ESA) initiative to establish and maintain SI-traceable ground-based FRM for satellite ocean color, thus providing a fundamental contribution to the European system for monitoring the Earth (Copernicus). This Special Issue of MDPI Remote Sensing is designed to showcase this essential Earth observation work through the publication of the project’s main achievements and results accompanied by other select relevant articles.
VIIRS --- SNPP --- NOAA-20 --- DINEOF --- ocean color data --- data merging --- gap-filling --- ocean color radiometers --- radiometric calibration --- indoor intercomparison measurement --- agreement between sensors --- measurement uncertainty --- field intercomparison measurement --- Hyperspectral reflectance --- validation --- autonomous measurements --- ground-truth data --- system design --- downwelling irradiance --- satellite validation --- Fiducial Reference Measurements --- water reflectance --- satellite --- calibration --- solar diffusor --- SDSM --- desert trend --- lunar calibration --- RVS --- MODIS --- Aqua --- ocean color --- water-leaving radiance --- atmospheric correction --- Sentinel-3 OLCI --- Copernicus --- ocean colour --- system vicarious calibration --- fiducial reference measurement --- Lampedusa --- MOBY --- MarONet --- radiometry --- research infrastructure --- uncertainty budget --- satellite ocean colour --- fiducial reference measurements (FRM) --- calibration and validation --- SI traceability and uncertainty --- European Space Agency (ESA) --- Committee for Earth Observation Satellites (CEOS) --- fiducial reference measurements --- SI-traceability --- Mediterranean Sea --- BOUSSOLE --- MSEA --- hyper-temporal dataset --- optical radiometry --- coastal environment --- observation geometry --- remote sensing reflectance --- ocean colour radiometers --- TriOS RAMSES --- Seabird HyperSAS --- field intercomparison --- AERONET-OC --- Acqua Alta Oceanographic Tower --- remote sensing --- spectral irradiance comparison --- spectral radiance sources comparison
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Droughts are one of the main extreme meteorological, and hydrological phenomena, which influence both the functioning of ecosystems, and many important sectors of human economic activity. Throughout the world, various direct changes in meteorological, and climatic conditions, such as: air temperature, humidity, and evapotranspiration can be observed. They have a significant influence upon the shaping of the phenomenon of drought. Land cover and land use can also be indirect factors influencing evapotranspiration, and, by the same token, the water balance in the water catchment area. They can also influence the course of the process of the drought. The observed climate change, manifested mainly by increases in temperature, in turn, influencing evapotranspiration, may cause intensification in terms of both the degree and frequency of droughts. Droughts related to changes in the hydrological regime, and to the decrease in water resources. Its results can be observed in various sectors, related, among others, to a demand for water for people, agriculture and the Industry. It can also prove problematic for water ecosystems. To reflect the aforementioned information, a reasonable drought risk management is indispensable in order to ease the water demand related problems in various sectors of human activity. This book presents original research on various drought indicators, modern measurement techniques used, among others, for monitoring and predicting droughts, drought indicator trends, the impact of insufficient precipitation on human activity in the context of climate change, and examples of modern solutions devised to prevent water shortages.
extensive green roofs --- climate change --- summer drought --- urban vegetation --- phytomass --- fertilizer --- biodiversity --- blue green infrastructure --- pan evaporation --- ANN --- WANN --- SVM-RF --- SVM-LF --- Pusa station --- drought --- SPI --- run theory --- Sen’s estimator --- Mann–Kendall --- Wadi Cheliff Basin --- water stress --- soil moisture --- atmospheric evaporative demand --- eddy covariance --- gross primary productivity --- meteorological drought --- agricultural drought --- atmospheric circulation --- elementary circulation mechanism (ECM) --- information entropy --- atmospheric blocking --- hydrological drought --- trends --- central Poland --- lotic systems --- refuge habitats --- fish --- risk management --- forecasting --- ARIMA --- Standardized Precipitation Evapotranspiration Index (SPEI) --- mitigation --- atmospheric drought --- forest drought --- Carpathian Mts. --- beech --- vertical climate zones --- Copernicus Sentinel-1 --- electrical resistivity tomography --- expansive clay --- InSAR --- shrink-swell risk --- SMOS surface soil moisture --- wavelet analysis --- precipitation --- precipitation deficit --- climatic water balance --- n/a --- Sen's estimator --- Mann-Kendall
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This book is a collection of recent developments, methodologies, calibration and validation techniques, and applications of thermal remote sensing data and derived products from UAV-based, aerial, and satellite remote sensing. A set of 15 papers written by a total of 70 authors was selected for this book. The published papers cover a wide range of topics, which can be classified in five groups: algorithms, calibration and validation techniques, improvements in long-term consistency in satellite LST, downscaling of LST, and LST applications and land surface emissivity research.
Land Surface Temperature (LST) --- satellite retrievals of LST --- LST from GOES satellites --- land surface temperature --- drones --- unmanned aerial vehicles --- thermal remote sensing --- MODIS --- Bayesian Maximum Entropy --- interpolation --- Himalaya --- air temperature --- topography --- Landsat --- split window algorithm --- TIRS --- thermal --- Landsat 8 --- stray light correction --- split-window algorithm --- single-channel algorithm --- AMSR2 --- annual cycle parameters --- random forest --- cloudy sky LST --- evapotranspiration --- data fusion --- field-scale --- machine-learning --- physical model --- Sentinel-2 --- Sentinel-3 --- Downscaling --- thermal infrared --- disaggregation --- Copernicus --- hyperspectral thermal infrared --- spectral smoothness --- temperature-emissivity separation --- sensitivity analysis --- noise --- land surface temperature (LST) --- daytime LST --- nighttime LST --- validation --- land surface emissivity (LSE) --- single channel algorithm --- radiative transfer equation --- mono window algorithm --- SURFRAD data --- GK2A --- split-window method --- BSRN --- LST --- downscaling --- LSA-SAF --- Sentinel 2 --- DEM --- spatial averaging biases --- land surface emissivity --- measurement uncertainties --- emissivity box method --- Fourier transform infrared spectrometer --- portable spectrometer --- n/a
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This book celebrates the ten-year anniversary of the Barcelona Expert Center by presenting recent contributions related to the topics on which the team has been working during these years. The Barcelona Expert Center expertise covers a wide variety of remote sensing fields, but the main focus of the research is on the Soil Moisture and Ocean Salinity (SMOS) data processing and its ocean, land, and ice applications. This book contains 14 scientific papers addressing topics that range from the description of the new data processing algorithms that are implemented in the last version of the operational SMOS Level 1 processor, to scientific applications derived from SMOS: results on the sea surface salinity assimilation in coastal models; synergies of the sea surface salinity with temperature and chlorophyll, and their impact on the better retrieval of ocean surface currents; quality assessment of SMOS derived sea ice thickness; sea surface salinity; and soil moisture products, among others. Moreover, one of the papers verifies the potential of the future CIMR mission within the CMEMS SSS operational production after the SMOS era.
soil moisture --- root zone --- SMAP --- SMOS --- MODIS --- climatology --- trends --- signal decomposition --- interferometric radiometry --- image reconstruction --- error correction --- surface currents --- mediterranean sea --- satellite altimetry --- sea surface temperature --- sea surface salinity --- BEC SMOS products --- Mediterranean Sea --- Algerian Basin --- ABACUS gliders --- microwave remote sensing --- CIMR --- copernicus marine service --- satellite observations --- tidal currents --- internal tides --- data assimilation --- 4D-Var --- Congo River plume --- satellite salinity --- Angola Basin --- ROMS --- moisture variability --- temporal dynamics --- moisture patterns --- spatial disaggregation --- Soil Moisture Active Passive (SMAP) --- Soil Moisture and Ocean Salinity (SMOS) --- REMEDHUS --- L-band radiometry --- Soil Moisture and Ocean Salinity (SMOS) mission --- sea ice thickness --- retrieval model validation --- upward looking sonar --- Arctic --- altimetry --- surface quasi-geostrophic equations --- remote sensing --- ocean color --- data fusion --- data merging --- physical oceanography --- singularity analysis --- faraday rotation angle (FRA) --- vertical total electron content (VTEC) --- L-band --- radiometry --- Interferometry --- ocean salinity (SMOS) --- calibration --- reprocessing --- BEC --- oceanography --- cryosphere --- processing --- sensor calibration
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This book focuses on remote sensing for urban deformation monitoring. In particular, it highlights how deformation monitoring in urban areas can be carried out using Persistent Scatterer Interferometry (PSI) and Synthetic Aperture Radar (SAR) Tomography (TomoSAR). Several contributions show the capabilities of Interferometric SAR (InSAR) and PSI techniques for urban deformation monitoring. Some of them show the advantages of TomoSAR in un-mixing multiple scatterers for urban mapping and monitoring. This book is dedicated to the technical and scientific community interested in urban applications. It is useful for choosing the appropriate technique and gaining an assessment of the expected performance. The book will also be useful to researchers, as it provides information on the state-of-the-art and new trends in this field
surface subsidence --- PS --- permanent scatterers --- land subsidence --- PS-InSAR --- thermal dilation --- SBAS-InSAR --- Sepulveda Transit Corridor --- deformation --- differential SAR interferometry --- reclaimed land --- Istanbul --- deformation monitoring --- skyscrapers --- generalized likelihood ratio test --- validation --- uplift --- displacement monitoring --- pursuit monostatic --- radar interferometry --- Sentinel-1A --- urbanization --- synthetic aperture radar --- Turkey --- terraSAR-X --- geological and geomorphological mapping --- London --- differential compaction --- expansive soils --- health monitoring --- Copernicus Sentinel-1 --- displacement mapping --- PALSAR --- land reclamation --- tomography --- Venetian-Friulian Plain --- ALOS PALSAR --- multi-temporal DInSAR --- SAR interferometry --- InSAR --- persistent scatterers --- carbonate karstification --- ENVISAT ASAR --- multiple PS detection --- sparse signals --- urban subsidence --- time series InSAR analysis --- time series analysis --- Persistent Scatterer Interferometry (PSI) --- engineering construction --- Rome --- persistent scatterer interferometry --- subsidence --- persistent scatterer interferometry (PSI) --- SNAP-StaMPS --- Lingang New City --- dewatering --- atmospheric component --- urban deformation monitoring --- Sentinel-1 --- differential interferometry --- Late-Quaternary deposits --- modelling --- Generalized Likelihood Ratio Test --- Persistent Scatterer Interferometry --- synthetic aperture radar (SAR) --- Capon estimation --- differential tomography --- deformation time series --- groundwater level variation --- radar detection --- multi-look SAR tomography --- spaceborne SAR --- SAR --- ERS-1/-2 --- reclamation settlements --- Wuhan --- subsidence monitoring --- water level changes --- polarimetry --- asymmetric subsidence --- urban monitoring --- urban areas --- landslide --- SAR tomography --- Urayasu City --- risk --- Los Angeles --- PALSAR-2
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Around 10% of the global population lives in the world’s coastal zones, mostly concentrated in the world’s largest megacities. In many regions, the population is exposed to a variety of natural hazards and space-based observations. This Special Issue will focus on the usage of remote sensing alone or in synergy with in situ measurments and modeling tools to provide precise and systematic information about processes acting in the world’s coastal zones.
ACOLITE --- coastal waters --- atmospheric correction --- time-series --- management --- Sentinel-2 --- radon transform --- remote sensing --- bathymetry inversion --- multi-scale monitoring --- image augmentation --- phytoplankton remote sensing --- coastal ocean --- red tides --- black pixel assumption --- satellite --- sediment transport --- coastal geomorphology --- ocean color --- GOCI --- VIIRS --- turbid waters --- satellite-derived bathymetry --- Copernicus programme --- multi-temporal approach --- lidar --- turbidity --- coastal upwelling --- wind forcing --- river plume --- MODIS --- Arctic Ocean --- hurricanes --- water quality --- Puerto Rico --- harmful algal blooms --- Chattonella spp. --- Skeletonema spp. --- backscattering --- Ariake Sea --- chlorophyll-a variability --- spring–neap tides --- MODIS-Aqua --- total suspended sediment --- river discharge --- band registration --- morphological registration --- multispectral camera --- Micasense Rededge-M --- Pearl River estuary --- diffuse attenuation coefficient --- S-EOF --- land subsidence --- multi-temporal SAR interferometry --- sea-surface height --- relative sea level change --- satellite altimetry data --- GNSS --- coastal urban centers --- natural protected areas --- climate change impact --- physics-based inversion method --- ocean surface circulation --- high frequency radar --- self-organizing map --- empirical orthogonal function --- neural networks --- synoptic characteristics --- wave radar --- sea waves --- model data --- Mediterranean sea --- small river plume --- aerial drone --- coastal processes --- frontal zones --- internal waves --- along-track interferometric synthetic aperture radar (ATI-SAR) --- current line-of-sight (LOS) velocity --- azimuth ambiguity --- baseline-to-platform speed ratio estimation --- storm surge --- coastal flooding --- marine storms --- natural hazards --- steric-effect --- satellite altimetry --- ADG/CDOM colored dissolved organic matter --- Sentinel 3 --- southwestern Puerto Rico --- ocean tidal backwater --- stage–discharge relation --- ocean tide model --- Mekong Delta --- suspended particulate matter --- ocean color data --- satellite remote sensing --- in situ measurements --- C2RCC --- Landsat-8 OLI --- Sentinel-2 MSI --- Mzymta River --- Black Sea --- MUR SST --- SST fronts --- Inner Sea of Chiloé --- northern Patagonia --- suspended sediment --- Typhoon Soudelor --- spatial–temporal distribution --- HF marine radars --- wave energy
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Agriculture, as the main source of alimentation and the most important economic activity globally, is being affected by the impacts of climate change. To maintain and increase our global food system production, to reduce biodiversity loss and preserve our natural ecosystem, new practices and technologies are required. This book focuses on the latest advances in remote sensing technology and agricultural engineering leading to the sustainable agriculture practices. Earth observation data, in situ and proxy-remote sensing data are the main source of information for monitoring and analyzing agriculture activities. Particular attention is given to earth observation satellites and the Internet of Things for data collection, to multispectral and hyperspectral data analysis using machine learning and deep learning, to WebGIS and the Internet of Things for sharing and publishing the results, among others.
Research & information: general --- Geography --- geographic information system (GIS) --- pocket beaches --- coastal management --- Interreg --- climate change --- remote sensing --- drone --- Sicily --- Malta --- Gozo --- Comino --- systematic literature review --- anomaly intrusion detection --- deep learning --- IoT --- resource constraint --- IDS --- evapotranspiration --- penman-monteith equation --- artificial neural network --- canopy conductance --- Ziz basin --- water quality --- satellite image analysis --- modeling approach --- nitrate --- dissolved oxygen --- chlorophyll a --- time series analysis --- environmental monitoring --- water extraction --- modified normalized difference water index (MNDWI) --- machine learning algorithm --- hyperspectral --- proximal sensing --- panicle initiation --- normalized difference vegetation index (NDVI) --- green ring --- internode-elongation --- Sentinel 1 and 2 --- Copernicus Sentinels --- crop classification --- food security --- agricultural monitoring --- data analysis --- SAR --- random forest --- 3D bale wrapping method --- equal bale dimensions --- mathematical model --- minimal film consumption --- optimal bale dimensions --- round bales --- Sentinel-2 --- SVM --- RF --- Boufakrane River watershed --- irrigation requirements --- water resources --- sustainable land use --- agriculture --- invasive plants --- precision agriculture --- rice farming --- site-specific weed management --- nitrogen prediction --- 1D convolution neural networks --- cucumber --- crop yield improvement --- mango leaf --- CCA --- vein pattern --- leaf disease --- cubic SVM --- chlorophyll-a concentration --- transfer learning --- overfitting --- data augmentation --- guava disease --- plant disease detection --- crops diseases --- entropy --- features fusion --- machine learning --- object-based classification --- density estimation --- histogram --- land use --- crop fields --- soil tillage --- data fusion --- multispectral --- sensor --- probe --- temperature profile --- forest roads --- simulation --- autonomous robots --- smart agriculture --- environmental protection --- photogrammetry --- path planning --- internet of things --- modeling --- convolutional neural networks --- machine vision --- computer vision --- modular robot --- selective spraying --- vision-based crop and weed detection --- Faster R-CNN --- YOLOv5 --- band selection --- CNN --- NDVI --- hyperspectral imaging --- crops --- urban flood --- Sentinel-1a --- Synthetic Aperture Radar (SAR) --- 3D Convolutional Neural Network --- multi-temporal data --- land use classification --- GIS --- Coatzacoalcos --- algorithms --- clustering --- pest control --- site-specific --- virtual pests --- rice plant --- weed --- hyperspectral imagery --- sustainable agriculture --- green technologies --- Internet of Things --- natural resources --- sustainable environment --- IoT ecosystem --- hyperspectral remoting sensing --- crop mapping --- image classification --- deep transfer learning --- hyperparameter optimization --- metaheuristic --- soil attribute --- ordinary Kriging --- rational sampling numbers --- spatial heterogeneity --- sampling --- soil pH --- spatial variation --- ordinary kriging --- Land Use/Land Cover --- LISS-III --- Landsat --- Vision Transformer --- Bidirectional long-short term memory --- Google Earth Engine --- Explainable Artificial Intelligence
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