190
Views
2
CrossRef citations to date
0
Altmetric
Research Articles

Impact of Initial and Boundary Conditions on Coupled Model Simulations for Bay of Bengal

ORCID Icon, , ORCID Icon & ORCID Icon
Pages 166-193 | Received 27 Jan 2021, Accepted 10 Nov 2021, Published online: 15 Dec 2021
 

Abstract

This study investigates the response of a high resolution coupled physical-ecosystem model simulations to initial and boundary conditions (IBCs) from various sources. For this purpose, we used physical parameters from the data sets World Ocean Atlas (WOA09), CSIRO Atlas of Regional Seas (CARS09) and North Indian Ocean Atlas (NIOA). Evaluating model simulated fields with standard validation data suggests that all three experiments could resolve most of the known surface and subsurface features of the Bay of Bengal (BoB) but with considerable differences in salinity and chlorophyll-a (Chl-a) and negligible differences in temperature among model simulations with various IBCs. The modeled Chl-a is well simulated with WOA09 as compared to NIOA and CARS09 data for climatological model simulations, with a correlation of 0.52 for the BoB. Moreover, the vertical distribution of Chl-a is found to be a function of nutrient supply to the base of the euphotic layer and mixed layer. These results significantly highlight the implicit and explicit use of IBCs for better representation of Chl-a concentration in the BoB from a high-resolution coupled model.

Acknowledgments

The work is supported by a research project ‘Ref.: SAC/EPSA/4.19/2017’ funded by SAC. Authors thank Dr. Sourav Sil for his help in set up of the ROMS model. Authors would like to thank editors and the anonymous reviewers, whose suggestions helped us to improve content of the manuscript significantly.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

Data openly available in a public repository that does not issue DOIs: Shortwave radiation & longwave radiation taken from Objectively Analyzed Air-sea Fluxes (OAFlux) International Satellite Cloud Climatology Project (ISCCP) http://oaflux.whoi.edu. Precipitation obtained from National Centers for Atmospheric Research (NCAR) https://data1.gfdl.noaa.gov/nomads/forms/core/COREv2/CNYF_v2.html. Temperature and salinity obtained from metoffice https://www.metoffice.gov.uk/hadobs/en4/download‐en4‐2‐1.html.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.