English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
 Local TagsRelease HistoryDetailsSummary
  Generation mechanisms of sea surface temperature anomalies associated with the canonical El Niño: The role of vertical mixing

Nakamura, K., Kido, S., Ijichi, T., Tozuka, T. (2023): Generation mechanisms of sea surface temperature anomalies associated with the canonical El Niño: The role of vertical mixing, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1263

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017329 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017329_1
Genre: Conference Paper

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Nakamura, Kouya1, Author
Kido, Shoichiro1, Author
Ijichi, Takashi1, Author
Tozuka, Tomoki1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

Content

show
hide
Free keywords: -
 Abstract: Although the thermocline feedback is considered as the dominant mechanism for generating positive sea surface temperature (SST) anomalies associated with the canonical El Niño, the role of vertical mixing has not been fully quantified in modelling studies even though active vertical turbulent mixing in the upper ocean is observed in the eastern equatorial Pacific due to intense current shear. In this study, a completely closed mixed layer heat budget analysis using outputs from a hindcast simulation of a regional ocean model is performed to elucidate the mechanisms of positive SST anomalies associated with the canonical El Niño. It is shown that the vertical mixing process plays a more important role in the development of SST anomalies than the thermocline feedback. The anomalous warming by the vertical mixing process may be explained by anomalously thick mixed layer that reduces sensitivity to cooling by the mean vertical mixing and an anomalous decrease in vertical temperature gradient associated with positive thermocline depth anomalies. On the other hand, effects of surface heat fluxes damp positive SST anomalies, not only due to negative latent heat flux and shortwave radiation anomalies, but also due to less effective warming by the mean surface heating due to positive mixed layer depth anomalies.

Details

show
hide
Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-1263
 Degree: -

Event

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

Legal Case

show

Project information

show

Source 1

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -