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The Unique Role of the Jason Geodetic Missions for High Resolution Gravity Field and Mean Sea Surface Modelling

Ole Baltazar Andersen, Shengjun Zhang, David T. Sandwell, Gerald Dibarboure, Walter H. F. Smith, Adili Abulaitijiang
2021 Remote Sensing  
The resolutions of current global altimetric gravity models and mean sea surface models are around 12 km wavelength resolving 6km features, and for many years it has been difficult to improve the resolution  ...  Unfortunately, the satellite ceased operation in October 2019 after 2 years of Geodetic Mission but still provided a fantastic dataset for high resolution gravity recovery.  ...  The Authors are thankful to the Ocean Surface Topography Science Team and its subgroup on Geoid, Mean Dynamic Topography and Mean Sea Surface for valuable discussions on the matter.  ... 
doi:10.3390/rs13040646 fatcat:pjfjca7bczau3eungelzjsyqqa

Observing and understanding the Earth system variations from space geodesy

Shuanggen Jin, Tonie van Dam, Shimon Wdowinski
2013 Journal of Geodynamics  
feedback mechanisms of the Earth system with high resolution and precision.  ...  However, observations and models of Earth's system change have large uncertainties due to the lack of direct high temporal-spatial measurements.  ...  Wetland InSAR observations are useful for wetland monitoring by water authorities, characterization of tidal flushing zone , and constraints of high spatial resolution surface flow model.  ... 
doi:10.1016/j.jog.2013.08.001 fatcat:2rcbfa7ssbfnfmkeofpto5j5qe

HY-2A Altimeter Data Initial Assessment and Corresponding Two-Pass Waveform Retracker

Shengjun Zhang, Jiancheng Li, Taoyong Jin, Defu Che
2018 Remote Sensing  
Firstly, both the exact repetitive mission and the geodetic mission for HY-2A provide new track orientations and different data coverage for recovering the marine gravity field, and these dense geographical  ...  In conclusion, the HY-2A mission can substantially improve the global accuracy and resolution of the marine gravity field and will reveal new tectonic features such as microplates, abyssal hill fabric,  ...  The authors also thank Wang Haihong for providing DW-TR results for HY-2A sample waveforms.  ... 
doi:10.3390/rs10040507 fatcat:37kwlczujfd2nkaf3gwyakxoni

Errors of Mean Dynamic Topography and Geostrophic Current Estimates in China's Marginal Seas from GOCE and Satellite Altimetry

Shuanggen Jin, Guiping Feng, Ole Andersen
2014 Journal of Atmospheric and Oceanic Technology  
in China's marginal seas, such as, the newest high-resolution GOCE gravity field model GO-CONS-GCF-2-TIM-R4 and the new Centre National d'Etudes Spatiales mean sea surface model MSS_CNES_CLS_11 from satellite  ...  The Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) and satellite altimetry can provide very detailed and accurate estimates of the mean dynamic topography (MDT) and geostrophic currents  ...  We are grateful to ESA for providing the GOCE gravity data and to AVISO for providing the ocean altimetry data as well as to the Scientific Research Project Office of Bulent Ecevit University for support  ... 
doi:10.1175/jtech-d-13-00243.1 fatcat:5dueduzhnbho3fc5hov6aqbkje

Satellite Gravimetry: A Review of Its Realization

Frank Flechtner, Christoph Reigber, Reiner Rummel, Georges Balmino
2021 Surveys in geophysics  
The special features of the GRACE Follow-On Mission, which was launched in 2018, and the plans for a next generation of gravity field missions are also discussed.  ...  The transition from passive satellites for gravity field determination to satellites equipped with special sensor technology, which was initiated in the last decade of the twentieth century, brought decisive  ...  Acknowledgements We would like to thank the two anonymous reviewers and the associate editor Prof. Dr. Nico Sneeuw for their valuable suggestions and Dr.  ... 
doi:10.1007/s10712-021-09658-0 pmid:34642516 pmcid:PMC8497046 fatcat:7lvnvd67hrb6jmp22yr62abfz4

Testing Airborne Gravity Data in the Large-Scale Area of Italy and Adjacent Seas [chapter]

Riccardo Barzaghi, Alberta Albertella, Daniela Carrion, Franz Barthelmes, Svetozar Petrovic, Mirko Scheinert
2015 International Association of Geodesy Symposia  
geodetic mission for the mean sea surface as the new data have far better range precision.  ...  a unique data set of gradients of the Earth gravity field.  ...  For the first time since 1995 two satellite altimetry missions, Jason-1 geodetic mission (GM) and Cryosat-2 Low Resolution Mode (LRM), provide global measuring sea surface heights at very high spatial  ... 
doi:10.1007/1345_2015_45 fatcat:hsv7xhrhevhl5hnfc5nuk6wpim

Fine-scale Altimetry and the Future SWOT Mission [chapter]

Rosemary Morrow, Dennis Blurmstein, Gerald Dibarboure
2018 New Frontiers in Operational Oceanography  
The first section gives an overview of the different satellite radar altimetry techniques being used today at high-resolution over the open and coastal oceans: from conventional alongtrack nadir altimetry  ...  We show how the along-track errors are estimated, how they vary geographically and seasonally, and how they limit the sea surface height (SSH) scales resolved.  ...  of 2D mean sea surface products are being developed using more geodetic altimeter data from Cryosat-2 and Jason-1 (DTU2015; O.  ... 
doi:10.17125/gov2018.ch08 fatcat:eod7oxlnivhajliqb42u7gxw6e

Ocean Surface Topography [chapter]

Lee-Lueng Fu
2014 Encyclopedia of Earth Sciences Series  
Definition The deviation of the height of the ocean surface from the geoid is known as the ocean surface topography. The geoid is a surface on which the Earth's gravity field is uniform.  ...  The main application of ocean surface topography is for the determination of large-scale ocean circulation.  ...  Acknowledgment This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the NASA.  ... 
doi:10.1007/978-0-387-36699-9_167 fatcat:h3an3n5wdvgodngbdnnjkrhm6y

Accuracy Evaluation of Altimeter-Derived Gravity Field Models in Offshore and Coastal Regions of China

Qianqian Li, Qianqian Li, Lifeng Bao, Lifeng Bao, Yong Wang, Yong Wang
2021 Frontiers in Earth Science  
The root mean squares of deviations between gravity models and shipboard gravity are all more than 7 mGal in offshore regions and within the range of 9.5–10.2 mGal in coastal regions.  ...  Then, the methods of marine gravity field recovery and dominating gravity models are described briefly.  ...  The National Geomatics Center of China and National Centers for Environmental Information provided the shipboard gravity data in China's offshore and coastal regions.  ... 
doi:10.3389/feart.2021.722019 doaj:5408aa3e31d044519e4ec0fe9e799e02 fatcat:ahjmhy2lcjbkjpzrei3aed77ma

Geodetic Observations and Global Reference Frame Contributions to Understanding Sea-Level Rise and Variability [chapter]

Geoff Blewitt, Zuheir Altamimi, James Davis, Richard Gross, Chung-Yen Kuo, Frank G. Lemoine, Angelyn W. Moore, Ruth E. Neilan, Hans-Peter Plag, Markus Rothacher, C. K. Shum, Michael G. Sideris (+3 others)
2010 Understanding Sea-Level Rise and Variability  
respect to a system of quasars through time, and, in the context of sea level, changes of the surface geometry of the Earth; that is, the variations in time and space of ocean surfaces and ice covers,  ...  In particular, we stress the need for the continuity of the geodetic observational series that serve basic research, applications, and operational needs.  ...  Some of the research described in this chapter was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration  ... 
doi:10.1002/9781444323276.ch9 fatcat:hykz763fyzgjjlquc4nykc3bbi

Altimetry for the future: Building on 25 years of progress

Saleh Abdalla, Abdolnabi Abdeh Kolahchi, Susheel Adusumilli, Suchandra Aich Bhowmick, Eva Alou-Font, Laiba Amarouche, Ole Baltazar Andersen, Helena Antich, Lotfi Aouf, Brian Arbic, Thomas Armitage, Sabine Arnault (+349 others)
2021 Advances in Space Research  
Section 6 identifies the data and methods and provides some accuracy and resolution requirements for the wet tropospheric correction, the orbit and other geodetic requirements, the Mean Sea Surface, Geoid  ...  In 2018 we celebrated 25 years of development of radar altimetry, and the progress achieved by this methodology in the fields of global and coastal oceanography, hydrology, geodesy and cryospheric sciences  ...  The development of accurate Mean Sea Surface (MSS), Mean Dynamic Topography (MDT) and Geoid models is an ongoing process incorporating both Exact Repeat Missions for the temporal mean and geodetic missions  ... 
doi:10.1016/j.asr.2021.01.022 fatcat:zgsllfqrgnfyporr7rs2dgb77e

The Benefits of the Ka-Band as Evidenced from the SARAL/AltiKa Altimetric Mission: Scientific Applications

Jacques Verron, Pascal Bonnefond, Lofti Aouf, Florence Birol, Suchandra Bhowmick, Stéphane Calmant, Taina Conchy, Jean-François Crétaux, Gérald Dibarboure, A. Dubey, Yannice Faugère, Kevin Guerreiro (+12 others)
2018 Remote Sensing  
The mission objectives were firstly the observation of the oceanic mesoscales but also global and regional sea level monitoring, including the coastal zone, data assimilation, and operational oceanography  ...  Compared to the standard Ku-band altimetry measurements, the Ka-band provides substantial improvements in terms of spatial resolution and data accuracy.  ...  Acknowledgments: The SARAL/AltiKa mission is an achievement of a very fruitful cooperation between ISRO and CNES. The contribution of EUMETSAT to data distribution is also strongly appreciated.  ... 
doi:10.3390/rs10020163 fatcat:ty2shtipqzbzfgvfd7ghg7moum

Satellite Altimetry for Geodetic, Oceanographic, and Climate Studies in the Australian Region [chapter]

X. Deng, D. A. Griffin, K. Ridgway, J. A. Church, W. E. Featherstone, N. J. White, M. Cahill
2010 Coastal Altimetry  
Acknowledgments We thank Prof Richard Coleman for valuable discussions and comments on various portions of this chapter.  ...  We would also like to thank the anonymous reviewers, CSIRO reviewers (Ms Anne-Elise Nieblas and Dr Sophie Bestley) and editors (Dr Stefano Vignudelli, Dr Andrey Kostianoy, Dr Paolo Cipollini and Dr Jérôme  ...  The role of satellite altimetry in determining the Australian marine gravity field Marine gravity anomalies are a primary data source for modelling the geoid (i.e. loosely the mean sea level) and geological  ... 
doi:10.1007/978-3-642-12796-0_18 fatcat:7k4lwvfqnbbipbofwszmjyihgi

The Benefits of the Ka-Band as Evidenced from the SARAL/AltiKa Altimetric Mission: Quality Assessment and Unique Characteristics of AltiKa Data

Pascal Bonnefond, Jacques Verron, Jérémie Aublanc, K. Babu, Muriel Bergé-Nguyen, Mathilde Cancet, Aditya Chaudhary, Jean-François Crétaux, Frédéric Frappart, Bruce Haines, Olivier Laurain, Annabelle Ollivier (+5 others)
2018 Remote Sensing  
The objective of this paper is to provide a state of the art of the achievements of the SARAL/AltiKa mission in terms of quality assessment and unique characteristics of AltiKa data.  ...  It shows also that beyond the fact that AltiKa data quality meets the expectations and initial mission requirements, the unique characteristics of the altimeter and the Ka-band offer unique contributions  ...  We acknowledge the support of all the Investigators, PIs and Co-Is, of the SARAL/AltiKa Mission.  ... 
doi:10.3390/rs10010083 fatcat:lplo2fk7rjhd3leenpvgsqqsgu

A global mean dynamic topography and ocean circulation estimation using a preliminary GOCE gravity model

P. Knudsen, R. Bingham, O. Andersen, Marie-Helene Rio
2011 Journal of Geodesy  
We thank the three anonymous reviewers whose comments and suggestions helped us improve the manuscript.  ...  The analysis has been supported by the European Space Agency project "GUT2 -Version 2 of the GOCE User Toolbox", CCN 3 to ESRIN Contract No 19568/06/I-OL (4200019568).  ...  The remainder of the paper is structured as follows: In Sect. 2 details of the procedure for estimating an MDT from a gravity model and mean sea surface are given.  ... 
doi:10.1007/s00190-011-0485-8 fatcat:h7g5ixcww5byve7lre2hzwxwyu
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