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Expected Performances of the Copernicus Imaging Microwave Radiometer (CIMR) for an All-Weather and High Spatial Resolution Estimation of Ocean and Sea Ice Parameters
2018
Journal of Geophysical Research - Oceans
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Acknowledgments The authors express their thanks to the MICROWAT team for all the ...
For the retrieval error StD, the coastal or sea ice margin effects are also included, with an estimation of the bias errors related to the proportion of land and sea ice in the considered pixel, taking ...
SST = sea surface temperature; SIC = sea ice concentration; SSS = sea surface salinity; StD = standard deviation; CIMR = Copernicus Imaging Microwave Radiometer; AMSR2 = Advanced Microwave Scanning Radiometer ...
doi:10.1029/2018jc014408
fatcat:r6mzsm5w4vgthngufyxhgtd3d4
Ocean and Sea Ice Retrievals from an End‐to‐End Simulation of the Copernicus Imaging Microwave Radiometer (CIMR) 1.4 to 36.5 GHz Measurements
2021
Journal of Geophysical Research - Oceans
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CIMR is designed to monitor the rapid Earth system changes taking place in the Arctic in response to the Integrated European Policy for the Arctic. ...
The Copernicus Imaging Microwave Radiometer (CIMR) is a satellite system developed as part of the European Union Copernicus program expansion activities. ...
Acknowledgments This work has been supported by the ESA CIMR-APE study (Contract number 400012555/18/NL/AI). We thank the CIMR Mission Advisory Group for productive discussions. ...
doi:10.1029/2021jc017610
fatcat:to4xfvud5bbjze2cawpb57llsm
Sea surface salinity estimates from spaceborne L-band radiometers: An overview of the first decade of observation (2010–2019)
2020
Remote Sensing of Environment
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The EU authors acknowledge support of ESA in the frame of the SMOS ESL Level 2 phase 3 contract (https://smos.argans.co.uk/), the N. Reul, et al. Remote Sensing of Environment 242 (2020) 111769 ...
Acknowledgements We would like to thank the contributions from three anonymous reviewers for comments and detailed editing of our draft which definitively helped to improve the paper. ...
For all L-band radiometers, SSS retrievals algorithms are therefore based on: • an empirical sea-water dielectric constant model at 1.4 GHz, • a surface roughness correction model, • a Radiative Transfer ...
doi:10.1016/j.rse.2020.111769
fatcat:4oa3ceryd5felg7y7ytbjtrrpq
Results of the Dragon 4 Project on New Ocean Remote Sensing Data for Operational Applications
2021
Remote Sensing
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This paper provides an overview of the Dragon 4 project dealing with operational monitoring of sea ice and sea surface salinity (SSS) and new product developments for altimetry data. ...
To improve sea ice thickness retrieval, a new method was developed to match the Cryosat-2 radar waveform. ...
For the retrieval of sea ice drift from SAR image pairs, Griebel and Dierking [35] studied the effect of uncertainties in an automatically retrieved sea ice drift field, and the influence of the type ...
doi:10.3390/rs13142847
fatcat:jsh2gqsdkzhrhhetjpsw6f3aqi
A Consistent Combination of Brightness Temperatures from SMOS and SMAP over Polar Oceans for Sea Ice Applications
2018
Remote Sensing
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Here, we explore the possibility of combining SMOS and SMAP TBs for sea ice thickness retrieval. First, we compare daily TBs over polar ocean and sea ice regions. ...
This bias can be adjusted using a linear fit resulting in a very good agreement of the retrieved sea ice thicknesses. ...
Acknowledgments: This work was supported by the project SPICES (space-borne observations for detecting and forecasting sea ice cover extremes) funded by the European Union's Horizon 2020 Programme (grant ...
doi:10.3390/rs10040553
fatcat:m5fx5ykc2zacdbkbo4ql3w7w2m
Remote Sensing of Sea Surface Salinity: Comparison of Satellite and In Situ Observations and Impact of Retrieval Parameters
2019
Remote Sensing
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We also identify the impact of the corrections for atmospheric effects recently modified in the Aquarius SSS retrievals. ...
There are notable differences in the instrumental approaches, as well as in the retrieval algorithms. ...
The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. ...
doi:10.3390/rs11070750
fatcat:qxuljm3xcjhmnfwvlay6zmjej4
Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions – Part 1: Product description
2014
The Cryosphere
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The largest 3 dB footprint dimensions are 97 km × 156 km and 74 km × 122 km (along × across track) for the radiometers and scatterometer, respectively. ...
Aquarius data at latitudes higher than 50° are averaged and gridded into weekly products of brightness temperature (TB), normalized radar cross section (NRCS), and sea surface salinity (SSS). ...
Taylor (University of Maine, School of Marine Sciences) for hosting the visualization of the weekly gridded products of brightness temperature and sea surface salinity on the Aquarius Education & Public ...
doi:10.5194/tc-8-905-2014
fatcat:vjckdkyvyzhyvdnauepxwikyzi
Satellite Salinity Observing System: Recent Discoveries and the Way Forward
2019
Frontiers in Marine Science
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Advances in L-band microwave satellite radiometry in the past decade, pioneered by ESA's SMOS and NASA's Aquarius and SMAP missions, have demonstrated an unprecedented capability to observe global sea ...
surface salinity (SSS) from space. ...
The unprecedented changes in sea ice melt, precipitation, and river runoff in the Arctic Ocean impact both geophysical and biochemical systems, including freshwater storage and export, ocean-ice-atmospheric ...
doi:10.3389/fmars.2019.00243
fatcat:zomirl3h4vbpjjfamay3ipwqcy
First SMOS Sea Surface Salinity dedicated products over the Baltic Sea
2022
Earth System Science Data
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This paper presents the first Soil Moisture and Ocean Salinity (SMOS) Sea Surface Salinity (SSS) dedicated products over the Baltic Sea. ...
The SSS retrieval from L-band brightness temperature (TB) measurements over this basin is really challenging due to important technical issues, such as the land–sea and ice–sea contamination, the high ...
The authors would like to thank Andreas Lehman (Chair of the Baltic Earth Working Group on Salinity Dynamics, from GEOMAR Helmholtz-Zentrum für Ozeanforschung) for his valuable help on the definition of ...
doi:10.5194/essd-14-2343-2022
fatcat:cp3y3x54rbbarf7fjds6ljyxvi
The Multifrequency Future for Remote Sensing of Sea Surface Salinity from Space
2020
Remote Sensing
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For example, adding higher frequencies to improve the correction for sea surface temperature and lower frequencies to improve the sensitivity to salinity in cold water. ...
Passive microwave remote sensing of sea surface salinity from space is done with measurements in the 27 MHz wide spectral window at 1.413 GHz (L-band) which is protected for passive use only. ...
An example is SST, which in current algorithms to retrieve salinity is obtained as ancillary data from other sources [17] . ...
doi:10.3390/rs12091381
fatcat:wpi4vsx3ebd57g5tejploro3ae
On the retrieval of sea ice thickness and snow depth using concurrent laser altimetry and L-band remote sensing data
2018
The Cryosphere
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For example, climatological snow depth data or as derived from reanalyses contain large or unconstrained uncertainty, which result in large uncertainty in the derived sea ice thickness and volume. ...
In this study, we explore the potential of combined retrieval of both sea ice thickness and snow depth using the concurrent active altimetry and passive microwave remote sensing of the sea ice cover. ...
Additionally, the authors are grateful to Sascha Willmes and Guenther Heinemann for the provision of Arctic sea ice lead map. Edited by: Julienne Stroeve Reviewed by: four anonymous referees ...
doi:10.5194/tc-12-993-2018
fatcat:of2gq43jzjazbo5dh4b6p3km4q
Towards an enhanced SMOS Level 2 Ocean Salinity product
2020
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
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The quality of the Soil Moisture and Ocean Salinity (SMOS) Sea Surface Salinity (SSS) measurements has been noticeably improved in the last years. ...
In this work, we apply Nodal Sampling to the SMOS brightness temperatures (TBs) which effectively reduces the standard deviation of the TB error; then, we use debiased non-Bayesian retrieval for the mitigation ...
His current work is centered in SMOS L1 corrections, in the research concerning sea-ice products development and in the improvement of the Arctic sea surface salinity retrieval. Dr. ...
doi:10.1109/jstars.2020.3034432
fatcat:ncjgj2oldfdszi7hbi4c5psnfu
Spaceborne GNSS Reflectometry
2022
Remote Sensing
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This article provides an overview of these studies with a focus on the basic methods and techniques in the retrieval of a number of geophysical parameters and the detection of several objects. ...
Accordingly, the data have been widely used to carry out a variety of studies for a range of useful applications, and significant research outcomes have been generated. ...
Acknowledgments: We are very grateful for the anonymous reviewers' comments, which have greatly improved the quality and content of the manuscript. ...
doi:10.3390/rs14071605
fatcat:k7kh5pb4tje3rhved3trrofabu
Remote Sensing of Environmental Changes in Cold Regions: Methods, Achievements and Challenges
2019
Remote Sensing
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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 ...
SMOS (Soil Moisture and Ocean Salinity) [46] , SMAP [163, 164] , and ASCAT [165] . ...
doi:10.3390/rs11161952
fatcat:63wghdyherdo3cyxasqpcbrz3m
Half a century of satellite remote sensing of sea-surface temperature
2019
Remote Sensing of Environment
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Corrections for the effects of the atmosphere to make quantitative estimates of the SST became possible when radiometers with multiple infrared channels were deployed in 1979. ...
Sea-surface temperature (SST) was one of the first ocean variables to be studied from earth observation satellites. ...
Merchant for providing a preprint of the paper (Merchant et al., 2019) to support the description (in Section 5.1.2) of the generation of the AVHRR time series of consistent SSTs. ...
doi:10.1016/j.rse.2019.111366
fatcat:6bkbqmedx5bjtmvw2kkjnq3xnm
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