Conditional sea surface statistics and their impact on geophysical sea surface parameters retrieved from SAR altimetry signals

Buchhaupt, C.; Egido, A.; Smith, W.H.F.; Fenoglio, L.

doi:10.1016/j.asr.2022.12.034

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Conditional sea surface statistics and their impact on geophysical sea surface parameters retrieved from SAR altimetry signals

2023
By Buchhaupt, C. ; Egido, A. ; Smith, W.H.F. ; ...
Source: Advances in Space Research 71 (2023) 2332–2347

[PDF-2.08 MB]

Details You May Also Like

Details:

Journal Title:

Advances in Space Research
Personal Author:

Buchhaupt, C. ; Egido, A. ; Smith, W.H.F. ; Fenoglio, L.

Buchhaupt, C. ; Egido, A. ; Smith, W.H.F. ; Fenoglio, L. Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research)

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research) Less -
Description:

In this study we present an analytical formulation of synthetic-aperture radar (SAR) altimetry signals including narrow banded nonlinear wave fields and conditional statistics between wave elevation displacements, horizontal wave slopes and vertical wave particle velocities. Considering the wave elevation displacements coskewness with respect to horizontal slopes leads to an analytical formulation of the electromagnetic bias within a SAR-mode altimeter stack. This formulation can be either parametrized by the significant wave height (SWH) and mean wave steepness, or in terms of the variance of vertical wave velocities. The effect of conditional vertical wave particle velocity variances with respect to the observed horizontal wave slopes close to nadir incidence angles leads to an effective reduction of the azimuth blurring of SAR-mode stacks. We present here a formulation of this effect by examining JONSWAP ocean wave spectra. In most cases this effect reduces the azimuth blurring by 10% to 30%. Additionally we investigate the effect of a nonlinear wave elevation displacement probability density function (PDF) on estimated geophysical parameters. We were able to show that including an elevation displacement skewness of 0.13 improves significantly the SWH consistency between altimetry and ECMWF Reanalysis v5 ERA5 results.
Keywords:

[+]

Remote sensing Delay-doppler Altimetry Electromagnetic Bias Retracking Wave Particle Motions Wave Steepness
Source:

Advances in Space Research 71 (2023) 2332–2347
DOI:

https://doi.org/10.1016/j.asr.2022.12.034
Format:

PDF
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:d7e607a176574e2885a76bb31b73a616e8dac8768901ff039dfd2e6af36120b6
Download URL:

/view/noaa/55887/noaa_55887_DS1.pdf
File Type:

No Additional Files

More +

Conditional sea surface statistics and their impact on geophysical sea surface parameters retrieved from SAR altimetry signals

Details:

Supporting Files

You May Also Like