Debye Dielectric Model Function for Seawater Based on Expanded L-Band Measurement Data Set
- Resource Type
- Conference
- Authors
- Zhou, Yiwen; Lang, Roger; Park, Young Soung; Dinnat, Emmanuel; Le Vine, David
- Source
- IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2020 - 2020 IEEE International. :5628-5630 Sep, 2020
- Subject
- Aerospace
Computing and Processing
Geoscience
Photonics and Electrooptics
Signal Processing and Analysis
Salinity (geophysical)
Data models
Dielectric constant
Dielectric measurement
Temperature measurement
Ocean temperature
Sea measurements
Ocean salinity
L-band
Dielectric model function
- Language
- ISSN
- 2153-7003
New seawater dielectric measurements have recently been made over a broad range of salinities and temperatures at the George Washington University (GW). These measurements have been used to refine the existing dielectric model function of seawater for salinity retrieval. The mathematical structure of the new model function has been investigated to: (a) look for a physical basis for the mathematical form; and (b) to optimize the accuracy of data fitting. The Debye model has been chosen to represent the dielectric constant of seawater as a function of salinity (S), temperature (T) and frequency (f). The retrieved salinity using the Debye model has good agreement with the in-situ data collected by Argo floats. The global differences in retrieved salinity and in-situ data will be presented at the meeting.