Generation and Assessment of ARGO Sea Surface Temperature Climatology for the Indian Ocean Region

Ravi Kumar Jha, T. V.S.Udaya Bhaskar

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2 Citations (Scopus)
1 Downloads (Pure)

Abstract

ARGO program was conceived with an aim to generate near real-time ocean observations as the primary in-situ sources for use in operational oceanography studies. Two decades-long ARGO near-surface temperature data set was used for generating monthly gridded ARGO sea surface temperature (ASST) product on a climatological scale. Data interpolating variational analysis (DIVA) method was employed for generating the product with a spatial resolution of 0.25° x 0.25° for the Tropical Indian Ocean. This monthly ASST product was evaluated using five different climatological SST products derived from in-situ and satellite measurements. Various statistics such as BIAS, RMSE, coefficient of correlation, and skill scores were generated to evaluate the reliability of the ASST product. Further, the ASST product was validated with climatological in-situ SST obtained from RAMA and OMNI moorings deployed in the Indian Ocean. Statistical comparisons showed low BIAS and RMSE, and high correlation and skill scores with most of the buoys locations and the gridded SST products. Results concluded that the near-surface temperature data from ARGO can be used along with other SST data sets in the generation of high-resolution blended SST products.

Original languageEnglish
Pages (from-to)343-357
Number of pages15
JournalOceanologia
Volume65
Issue number2
Early online date11 Sept 2022
DOIs
Publication statusPublished (in print/issue) - 30 Jun 2023

Bibliographical note

Publisher Copyright:
© 2022

Data Access Statement

TMI data set is taken from Remote Sensing Systems-NASA (https://www.remss.com/missions/tmi/), and NOAA/PSL OISSTv2 data set is openly available at https://psl.noaa.gov/data/gridded/index.html. We also encourage the efforts of the scientific team of ARGO data collection and distribution. ARGO data sets (http://doi.org/ 10.17882/42182) are freely available by the International ARGO and National Programs (http://www.argo.ucsd.edu, http://argo.jcommops.org).

Keywords

  • ARGO
  • Climatology
  • DIVA
  • In-situ
  • Indian Ocean
  • Satellite
  • SST

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