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Aquarius Wind Speed Products: Algorithms and Validation

Alexander G. Fore, Simon H. Yueh, Wenqing Tang, Akiko K. Hayashi, Gary S. E. Lagerloef
2014 IEEE Transactions on Geoscience and Remote Sensing  
This paper introduces and validates the Aquarius scatterometer-only wind speed algorithm and the combined active passive (CAP) wind speed products.  ...  We find the performance of the Aquarius scatterometer-only wind speed is better than 1.00 ms −1 , with best performance for low wind speeds and increasing noise levels as the wind speed increases.  ...  He has also has experience in synthetic aperture radar processing and calibration algorithms.  ... 
doi:10.1109/tgrs.2013.2267616 fatcat:gdxfssm2znevfj2lvluh6cz3fy

The emission and scattering of L-band microwave radiation from rough ocean surfaces and wind speed measurements from the Aquarius sensor

Thomas Meissner, Frank J. Wentz, Lucrezia Ricciardulli
2014 Journal of Geophysical Research - Oceans  
The L-band GMF together with the combined passive/active L-band wind speeds are utilized in the Aquarius SSS retrieval algorithm for the surface roughness correction.  ...  The data are temporally and spatially collocated with wind speeds from Wind-Sat and F17 SSMIS (Special Sensor Microwave Imager Sounder) and wind directions from NCEP (National Center for Environmental  ...  We would like to thank the members of the Aquarius cal/val and science teams, in particular Gary Lagerloef, David LeVine, Simon Yueh, Yi Chao, Tong Lee, Shannon Brown, Emmanuel Dinnat, Alex Fore, Hsun-Ying  ... 
doi:10.1002/2014jc009837 fatcat:cbc56kg2lnfpfkhylao4llgr3m

Estimate of uncertainties in the Aquarius salinity retrievals

Thomas Meissner, Frank Wentz, David Le Vine, Gary Lagerloef, Tong Lee
2015 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)  
We present a method for formally assessing random and systematic uncertainties in the Aquarius salinity retrievals.  ...  We compare the results of the formal uncertainty estimates with uncertainty estimates based on comparing the Aquarius salinities with those from external validation sources finding excellent agreement.  ...  of I/2 and Aquarius wind speed ( Figure 4) .  ... 
doi:10.1109/igarss.2015.7327037 dblp:conf/igarss/MeissnerWVLL15 fatcat:7oovo75u7zcipmzywqd5grbezy

Upper ocean salinity stratification and rain freshening in the tropics observed from Aquarius

Thomas Meissner, Frank Wentz, Joel Scott, Kyle Hilburn
2014 2014 IEEE Geoscience and Remote Sensing Symposium  
We present validation results for the Aquarius Version 3.0 ocean surface salinity product that has been released in June 2014.  ...  A comparison between the standard Aquarius salinity product and the CAP salinity is also presented.  ...  Green: Standard Aquarius V3.0 algorithm which uses scatterometer (HH) and radiometer (H) wind speeds in the roughness correction.  ... 
doi:10.1109/igarss.2014.6947647 dblp:conf/igarss/MeissnerWSH14 fatcat:ytvojipazrgxfmp5szlf7pph24

Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products

M. Umbert, S. Guimbard, G. Lagerloef, L. Thompson, M. Portabella, J. Ballabrera-Poy, A. Turiel
2015 Journal of Geophysical Research - Oceans  
A recently developed fusion technique, based on singularity analysis, is applied in this study to reconstruct these mesoscale (from 100 km and 3 days) features in Aquarius-derived products.  ...  These structures are, however, not resolved by the relatively lower resolution (100 km and 7 day repeat subcycle) of Aquarius observations.  ...  Stringent filtering has been applied, keeping data only when SSS retrieval is known to be more accurate (wind speed lower than 15 m/s, low radio-frequency interference probability and low reflected galactic  ... 
doi:10.1002/2014jc010466 fatcat:tzmo4vbkgjehvjqan6goltmh3i

Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions – Part 1: Product description

L. Brucker, E. P. Dinnat, L. S. Koenig
2014 The Cryosphere  
Additionally, these products intend to facilitate access to L-band data, and can be used to assist in algorithm developments.  ...  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).  ...  We acknowledge PO.DAAC for distributing the Level 2 Aquarius data (version 2.0) and NSIDC for archiving and distributing the weekly gridded products presented in this paper. We also acknowledge A.  ... 
doi:10.5194/tc-8-905-2014 fatcat:vjckdkyvyzhyvdnauepxwikyzi

Evaluation of sea surface salinity observed by Aquarius

Naoto Ebuchi, Hiroto Abe
2012 2012 IEEE International Geoscience and Remote Sensing Symposium  
Aquarius products retrieved by different algorithms (Aquarius Official Release version 3.0 [V3.0], Combined Active-Passive [CAP] algorithm version 3.0, and Remote Sensing Systems test bed algorithm version  ...  The CAP product deviates under strong wind conditions (>10 m s 21 ), probably due to model bias and uncertainty associated with sea-surface roughness.  ...  Acknowledgments The authors thank the editor (Des Barton), an associated editor, and two  ... 
doi:10.1109/igarss.2012.6352300 dblp:conf/igarss/EbuchiA12 fatcat:njmozcrvwja6ljtdrd5tvfgcda

Evaluation of sea-surface salinity observed by Aquarius

Hiroto Abe, Naoto Ebuchi
2014 Journal of Geophysical Research - Oceans  
Aquarius products retrieved by different algorithms (Aquarius Official Release version 3.0 [V3.0], Combined Active-Passive [CAP] algorithm version 3.0, and Remote Sensing Systems test bed algorithm version  ...  The CAP product deviates under strong wind conditions (>10 m s 21 ), probably due to model bias and uncertainty associated with sea-surface roughness.  ...  Acknowledgments The authors thank the editor (Des Barton), an associated editor, and two  ... 
doi:10.1002/2014jc010094 fatcat:t2ygdqpwrfahnjgtpyd3kd4tuu

Evaluation of sea surface salinity observed by Aquarius

Naoto Ebuchi, Hiroto Abe
2014 2014 IEEE Geoscience and Remote Sensing Symposium  
Aquarius products retrieved by different algorithms (Aquarius Official Release version 3.0 [V3.0], Combined Active-Passive [CAP] algorithm version 3.0, and Remote Sensing Systems test bed algorithm version  ...  The CAP product deviates under strong wind conditions (>10 m s 21 ), probably due to model bias and uncertainty associated with sea-surface roughness.  ...  Acknowledgments The authors thank the editor (Des Barton), an associated editor, and two  ... 
doi:10.1109/igarss.2014.6947473 dblp:conf/igarss/EbuchiA14 fatcat:kz65p2suezdm5fprg4oxyxyvee

The Salinity Retrieval Algorithms for the NASA Aquarius Version 5 and SMAP Version 3 Releases

Thomas Meissner, Frank J. Wentz, David M. Le Vine
2018 Remote Sensing  
When stratified as function of sea surface temperature or sea surface wind speed, the difference between Aquarius Version 5 and ARGO is within ±0.1 psu.  ...  We show how formal error estimates for the Aquarius retrievals can be obtained by perturbing the input to the algorithm.  ...  Acknowledgments: We would like to thank the members of the Aquarius and SMAP Cal/Val and science teams for providing valuable input and suggestions over the course of this work.  ... 
doi:10.3390/rs10071121 fatcat:2noz2avppnhjtpbsgjdktodleq

Correction of Satellite Sea Surface Salinity Products Using Ensemble Learning Method

Senliang Bao, Ren Zhang, Huizan Wang, Hengqian Yan, Jian Chen, Yangjun Wang
2021 IEEE Access  
Surface wind speed and  ...  Surface wind speed and wind stress components used in our study are based on the Advanced SCATterometer (ASCAT) daily data on 0.25°× 0.25° resolution available at Ifremer/cersat [42] .  ... 
doi:10.1109/access.2021.3057886 fatcat:e2kd2mue2jdp5a6hwvjm72rmfe

SAC-D AQUARIUS A SATELLITE FOR OCEAN, CLIMATE AND ENVIRONMENT. ONE YEAR OF DATA

S. Torrusio, G. Lagerloef, M. Rabolli, D. LeVine
2012 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Other oceanic and atmospheric parameters are measured with a MWR, from CONAE, in K and Ka band, as wind speed, rain rate, sea ice, water vapour and liquid water in clouds.  ...  This work provides a review of the first year of data, including the status of calibration and validation, other finding and at the same time we want to present the progress in the active educational and  ...  Many academic and scientific teams around the world are developing new algorithms and products. Some of these data can be downloaded from NASA and CONAE web site.  ... 
doi:10.5194/isprsarchives-xxxix-b8-551-2012 fatcat:fyqb2vdqbbapbmtilpneevlpp4

Sea Surface Salinity Retrievals from Aquarius Using Neural Networks

Yan Soldo, David M. Le Vine, Emmanuel Dinnat
2019 IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium  
(wind speed, sea surface temperature, etc.).  ...  The output of the NN and the nominal Aquarius SSS are compared against SSS values from in-situ measurements and from ocean models.  ...  The differences SSS_Aquarius-SSS_Argo have been plotted as a function of several parameters (wind speed, sea surface temperature, etc.), in order to better understand which subsets of Aquarius data have  ... 
doi:10.1109/igarss.2019.8898959 dblp:conf/igarss/SoldoVD19 fatcat:gktcr4glrbfkxjkjvc3p2vakve

From field experiments to salinity products: a tribute to the contributions of Jordi Font to the SMOS mission

Adriano Camps, Carolina Gabarró, Mercè Vall-llossera, Sebastià Blanch, Albert Aguasca, Francesc Torres, Ignasi Corbella, Nuria Duffo, Antonio Turiel, Marcos Portabella, Joaquim Ballabrera-Poy, Verónica González-Gambau (+10 others)
2016 Scientia Marina  
From field experiments to salinity products: a tribute to the contributions of Jordi Font to the SMOS mission. Sci. Mar. 80S1: 159-172. doi: http://dx.  ...  This article summarizes some of the activities in which Jordi Font, research professor and head of the Department of Physical and Technological Oceanography, Institut de Ciències del Mar (CSIC, Spanish  ...  1-R, and EURYI 2004 award.  ... 
doi:10.3989/scimar.04285.04a fatcat:4e754a4kcbbbnbqf4l2v2divwe

On Extreme Winds at L-Band with the SMAP Synthetic Aperture Radar

Alexander G. Fore, Simon H. Yueh, Bryan W. Stiles, Wenqing Tang, Akiko K. Hayashi
2019 Remote Sensing  
We introduce a cyclone wind speed retrieval algorithm and apply it to the limited SMAP SAR dataset of cyclones.  ...  We find that the L-band cross-polarized backscatter is far more sensitive to wind speed at extreme winds than the co-polarized backscatter and it is essential to observations of extreme winds with L-band  ...  Aquarius enabled combined estimates of Sea Surface Salinity (SSS) as well as ocean wind speeds [5] , and we have directly modified these algorithms as well as QuikSCAT algorithms [6] [7] [8] to the  ... 
doi:10.3390/rs11091093 fatcat:ccj7e22itnahno55jg6zshe2s4
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