The complex dielectric constant of pure and sea water from microwave satellite observations

Meißner, Thomas; Wentz, F. J.

doi:10.1109/tgrs.2004.831888

Cited by 647 publications

(469 citation statements)

References 30 publications

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“…The MLE minimizes the sum of square (SOS) difference between the Aquarius measurements of T B0 of the two polarizations (vertical V and horizontal H) and the values of the radiative transfer model calculation for T B0 . This model calculation which is based on the dielectric constant of sea-water [10][11][12]. Figure 1 shows a schematic flow diagram of the salinity retrieval algorithm.…”

Section: Basic Algorithm Flowmentioning

confidence: 99%

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

2018

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Abstract:The Aquarius end-of-mission (Version 5) salinity data set was released in December 2017. This article gives a comprehensive overview of the main steps of the Level 2 salinity retrieval algorithm. In particular, we will discuss the corrections for wind induced surface roughness, atmospheric oxygen absorption, reflected galactic radiation and side-lobe intrusion from land surfaces. Most of these corrections have undergone major updates from previous versions, which has helped mitigating temporal and zonal biases. Our article also discusses the ocean target calibration for Aquarius Version 5. We show how formal error estimates for the Aquarius retrievals can be obtained by perturbing the input to the algorithm. The performance of the Aquarius Version 5 salinity retrievals is evaluated against salinity measurements from the ARGO network and the HYCOM model. 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. The estimated global RMS uncertainty for monthly 100 km averages is 0.128 psu for the Aquarius Version 5 retrievals. Finally, we show how the Aquarius Version 5 salinity retrieval algorithm is adapted to retrieve salinity from the Soil-Moisture Active Passion (SMAP) mission.

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Section: Basic Algorithm Flowmentioning

confidence: 99%

“…SST is a crucial input to the dielectric constant model [10][11][12], which enters the computation of the emissivity of a flat ocean surface. An evaluation was made of the performance of the SSS retrieval algorithm with various ancillary SST fields [13].…”

Section: Sea Surface Temperature (Sst)mentioning

confidence: 99%

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

2018

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“…sf is the relative dielectric constant of salt fog, which can be estimated with the single Debye relaxation law 25 .…”

Section: Accumulation Mechanism Of Surface Charge On Salt Fogmentioning

confidence: 99%

The lightning striking probability for offshore wind turbine blade with salt fog contamination

Zhang

et al. 2017

Journal of Applied Physics

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This version is available at https://strathprints.strath.ac.uk/61860/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. The blades of offshore wind turbine are prone to be adhered with salt fog after long-time exposure in the marine-atmosphere environment, and salt fog reduces the efficiency of lightning protection system. In order to study the influence of salt fog on lightning striking probability (LSP), the lightning discharge process model for wind turbine blade is adopted in this paper considering the accumulation mechanism of surface charges around salt fog area. The distribution of potential and electric field with the development of downward leader is

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“…By incrementally dissolving salt into the water, the salinity of the water can be increased from 0 parts per thousand (ppt) to 40 ppt. This results in an increase of conductivity from 0 to 4.3 S/m based on [21]. Fig.…”

Section: Materials Effectsmentioning

confidence: 94%

Investigation of Wireless Power Transfer Using Planarized, Capacitor-Loaded Coupled Loops

Li¹,

Ling²

2014

PIER

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Abstract-A capacitor-loaded coupled loop structure is investigated for wireless power transfer at 6.78 MHz for a target transmission distance of 1 m. It is shown that the optimal configuration for this structure occurs when the coupled loops are coplanar. Therefore, by converting thick wires into wide strips, a planarized configuration can be achieved. Simulation results are verified in measurement, which shows a 60% overall power transfer efficiency at 1 m. The contribution of different loss mechanisms is examined. Next, power transfer efficiency in the presence of dielectric materials is investigated in simulation and measurement. Additionally, tuning capabilities that arise from the implementation of variable capacitors are shown. Finally, design space exploration is performed to examine design tradeoffs.

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The complex dielectric constant of pure and sea water from microwave satellite observations

Cited by 647 publications

References 30 publications

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

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

The lightning striking probability for offshore wind turbine blade with salt fog contamination

Investigation of Wireless Power Transfer Using Planarized, Capacitor-Loaded Coupled Loops

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