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Modeling Envisat RA-2 Waveforms in the Coastal Zone: Case Study of Calm Water Contamination

Jesús Gomez-Enri, Stefano Vignudelli, Graham D. Quartly, Christine P. Gommenginger, Paolo Cipollini, Peter G. Challenor, Jérôme Benveniste
2010 IEEE Geoscience and Remote Sensing Letters  
Index Terms-Coastal altimetry, digital elevation model (DEM), Envisat RA-2, northwestern Mediterranean, waveform analysis.  ...  This letter examines waveform data from the Envisat RA-2 as it passes regularly over Pianosa (a 10-km 2 island in the northwestern Mediterranean).  ...  Orlandi for his assistance in exploiting wind and wave data from their operational model. MODIS ocean color data were obtained from NASA/Goddard Space Flight Center.  ... 
doi:10.1109/lgrs.2009.2039193 fatcat:nhick6kndfctpkvo7au6smbtzi

Coastal Altimetry Products in the Strait of Gibraltar

Jesus Gomez-Enri, Paolo Cipollini, Marcello Passaro, Stefano Vignudelli, Begona Tejedor, Josep Coca
2016 IEEE Transactions on Geoscience and Remote Sensing  
coastal waveform retracker, the Adaptive Leading Edge Subwaveform (ALES) retracker; in addition, SLAs at 1 Hz were obtained from the Centre for Topographic studies of the Ocean and Hydrosphere (CTOH).  ...  This paper analyzes the availability and accuracy of coastal altimetry sea level products in the Strait of Gibraltar.  ...  The in situ data were obtained from the Spanish Institute of Oceanography (IEO). The Envisat RA-2 SGDR products were downloaded from ESA Earthnet Online.  ... 
doi:10.1109/tgrs.2016.2565472 fatcat:l4z52afjbffv5m5ivzcvrsv6ru

Development of an ENVISAT Altimetry Processor Providing Sea Level Continuity Between Open Ocean and Arctic Leads

Jean-Christophe Poisson, Graham D. Quartly, Andrey A. Kurekin, Pierre Thibaut, Duc Hoang, Francesco Nencioli
2018 IEEE Transactions on Geoscience and Remote Sensing  
Then, a new physical model has been developed (modified from the Brown model to include anisotropy in the scattering from calm protected water surfaces) and has been implemented in a maximum likelihood  ...  This new processing has been used to produce maps of Arctic sea level anomaly from 18-Hz ENVIronment SATellite/RA-2 data.  ...  basins), and coastal zones.  ... 
doi:10.1109/tgrs.2018.2813061 fatcat:jk2uqo4u7bcoxjtegql2fcvxtu


R. Reyes, D. Noveloso, A. Rediang, M. Passaro, D. Bringas, M. Nagai
2019 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Coupled with the occurrence of regional/local sea level rise on urbanized coastal cities is the possibility of land subsidence that contaminates the measurement by the tide gauge (TG) sensors.  ...  This study used satellite altimeter retracked products near the TG Stations in Tagbilaran, Bohol; Dumaguete, Negros Oriental; and Mambajao, Camiguin located in the vicinity of the South East Bohol Trench  ...  Altimetry data used in this study were developed, validated by the CTOH/LEGOS, France and distributed by Aviso + ".  ... 
doi:10.5194/isprs-archives-xlii-4-w19-369-2019 fatcat:w3xwzzpodzdpbcp6252xvcsuze

Retrieving Sea Level and Freeboard in the Arctic: A Review of Current Radar Altimetry Methodologies and Future Perspectives

Graham D. Quartly, Eero Rinne, Marcello Passaro, Ole B. Andersen, Salvatore Dinardo, Sara Fleury, Amandine Guillot, Stefan Hendricks, Andrey A. Kurekin, Felix L. Müller, Robert Ricker, Henriette Skourup (+1 others)
2019 Remote Sensing  
Radar returns may be from all ocean, all sea ice, or a mixture of the two, so the first task is the determination of which surface and then an interpretation of the signal to give range.  ...  The review then discusses the issues concerning corrections, including the choices between using other remote-sensing measurements and using those from models or climatology.  ...  The same OCOG retracker was later implemented in the ERS-2 RA, Envisat RA-2 and CryoSat-2 ground processors. Laxon et al.  ... 
doi:10.3390/rs11070881 fatcat:f6p4xrertvcafe4uhpsb7i4fcm

ALES, the multi-mission Adaptive Leading Edge Sub-Waveform Retracker, design and validation

Marcello Passaro, Paolo Cipollini, Stefano Vignudelli, Graham Quartly, Helen Snaith
Our study addresses the first issue, i.e. retracking, the fitting of a waveform model to the observed echoes, the process that allows the estimation of the parameters.  ...  Nevertheless, coastal data has been flagged as unreliable due to land and calm water interference in the altimeter and radiometer footprint and high frequency tidal and atmospheric forcing.  ...  Modeling envisat ra-2 waveforms in the coastal zone: case study of calm water contamination. IEEE Geosci. Remote Sens. Lett. 7, 474-478 (2010). [2] Brown, G.  ... 

Remote Sensing of Environmental Changes in Cold Regions: Methods, Achievements and Challenges

Jinyang Du, Jennifer D. Watts, Lingmei Jiang, Hui Lu, Xiao Cheng, Claude Duguay, Mary Farina, Yubao Qiu, Youngwook Kim, John S. Kimball, Paolo Tarolli
2019 Remote Sensing  
selected key variables related to ice, snow, permafrost, water bodies, and vegetation; (b) highlighting recent environmental nonstationarity occurring in the Arctic, Tibetan Plateau, and Antarctica as  ...  This paper provides an overview of recent achievements, challenges, and opportunities for land remote sensing of cold regions by (a) summarizing the physical principles and methods in remote sensing of  ...  By integrating multi-altimeter data from Envisat/RA-2, Cryosat-2/Siral, Jason-1/Poseidon-2, and Jason-2/Poseidon-3, Gao et al.  ... 
doi:10.3390/rs11161952 fatcat:63wghdyherdo3cyxasqpcbrz3m

Performance evaluation of different satellite radar altimetry missions for monitoring inland water bodies [article]

Shirzad Roohi, Universität Stuttgart, Universität Stuttgart
So far, studying water level variations of inland water bodies has been a challenge for satellite altimeters in terms of spatial and temporal resolution as well as accuracy of water level determination  ...  Because changes in the water level of lakes and rivers indicate changes in climatic parameters, such as precipitation and evaporation, it is necessary to monitor water level variation of inland water bodies  ...  This technique can increase the number of valid observations, particularly in coastal zones or over inland shallow water bodies (Anzenhofer et al., 1999) .  ... 
doi:10.18419/opus-9140 fatcat:6s3amp2jzfc6rd7fhog5wnzit4

Altimeter Retrievals of Sea Ice, Lake Ice and Snow Properties

Justin F. Beckers
such as the absorption of EM radiation by water.  ...  The first of these studies highlighted errors with the early versions of CryoSat-2 data.  ...  The previous generation of radar altimeters (ERS-1/2, Envisat RA-2, Jason, TOPEX/POSEIDON, and some current altimeters (Jason-2, AltiKa) are pulse-limited systems.  ... 
doi:10.7939/r3np1x03n fatcat:oinf4wk6orb7hois266zjnnlci

74. Jahrestagung der Deutschen Geophysikalischen Gesellschaft : 10.–13. März 2014 in Karlsruhe [article]

Deutsche Geophysikalische Gesellschaft
In all cases, an excellent fit between the measured and full-waveform modelled data in terms of shape and amplitude of the waveforms can be observed, which indicates that the full-waveform inverted model  ...  Saturating the samples with distilled and saline water solutions led to a decrease of electrical resistivity in all samples, even in the case of distilled water.  ...  On the basis of three statistical error measurements, (1) RMS of travel time residuals, (2) the error in depth, and (3) the error in the epicenter coordinates, a best 1D model is selected.  ... 
doi:10.2312/dgg74 fatcat:l6ocxv6xczbytiv5gcljpixfam