Preprints
https://doi.org/10.5194/os-2021-51
https://doi.org/10.5194/os-2021-51

  22 Jun 2021

22 Jun 2021

Review status: a revised version of this preprint was accepted for the journal OS and is expected to appear here in due course.

Sea Surface Salinity Short Term Variability in the Tropics

Frederick Bingham and Susannah Brodnitz Frederick Bingham and Susannah Brodnitz
  • Center for Marine Science, University of North Carolina Wilmington, Wilmington, 28403-5928, USA

Abstract. Using data from the Global Tropical Moored Buoy Array we study the validation process for satellite measurement of sea surface salinity (SSS). We compute short-term variability (STV) of SSS, variability on time scales of 5–14 days. It is meant to be a proxy for subfootprint variability as seen by a satellite measuring SSS. We also compute representation error, which is meant to mimic the SSS satellite validation process where footprint averages are compared to pointwise in situ values. We present maps of these quantities over the tropical array. We also look at seasonality in the variability of SSS and find which months have maximum and minimum amounts. STV is driven at least partly by rainfall. Moorings exhibit larger STV during rainy periods than non-rainy ones. The same computations are also done using output from a high-resolution global ocean model to see how it might be used to study the validation process. The model gives good estimates of STV, in line with the moorings, though tending to have smaller values.

Frederick Bingham and Susannah Brodnitz

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on os-2021-51', Corinne Trott, 28 Jun 2021
  • RC2: 'Comment on os-2021-51', Anonymous Referee #2, 08 Sep 2021

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on os-2021-51', Corinne Trott, 28 Jun 2021
  • RC2: 'Comment on os-2021-51', Anonymous Referee #2, 08 Sep 2021

Frederick Bingham and Susannah Brodnitz

Frederick Bingham and Susannah Brodnitz

Viewed

Total article views: 344 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
258 74 12 344 5 9
  • HTML: 258
  • PDF: 74
  • XML: 12
  • Total: 344
  • BibTeX: 5
  • EndNote: 9
Views and downloads (calculated since 22 Jun 2021)
Cumulative views and downloads (calculated since 22 Jun 2021)

Viewed (geographical distribution)

Total article views: 317 (including HTML, PDF, and XML) Thereof 317 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 18 Oct 2021
Download
Short summary
Satellite measurements of sea surface salinity (SSS) are compared with measurements in the ocean to verify the quality of the satellite data. SSS satellites measure average values over a footprint with size ~100 km, whereas ocean values are usually taken at a single point in space and time. Using SSS data from a network of buoys across the global tropics we estimate the size of the mismatch between satellite and in place measurements to better understand the error structure of the satellite.