Influence of post-Tehuano oceanographic processes in the dynamics of the CO2 system in the Gulf of Tehuantepec, Mexico
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

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields



Document Data
Clear All
Clear All

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


Influence of post-Tehuano oceanographic processes in the dynamics of the CO2 system in the Gulf of Tehuantepec, Mexico

Filetype[PDF-3.53 MB]


  • Journal Title:
    Journal of Geophysical Research: Oceans
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    This investigation reports, for the first time, results of CO2 system variables in the Gulf of Tehuantepec, located in the Mexican tropical Pacific. We quantified the post-Tehuano concentration of dissolved inorganic carbon (DIC) and pH (April 2013). These values were used to calculate pCO2, aragonite saturation ((Ar)), and air-sea CO2 fluxes (FCO2). The intense vertical stratification was found to contribute to the biogeochemical processes in surface waters (<70 m). However, in post-Tehuano conditions, high pCO2 (approximate to 1000 mu atm) and DIC concentrations (2200 mu mol kg(-1)), as well as low (Ar) (approximate to 1.1) and pH (approximate to 7.5), remain in surface waters for a few days after Tehuano winds have weakened. We identified four oceanographic areas: (a) a highly mixed region due to previous Tehuano events; (b) coastal upwelling in the western region; (c) mesoscale eddies; (d) a poleward surface coastal current. The first three promoted the influence of Subtropical Subsurface Water in the chemistry of surface waters, whereas the coastal current contributed to the horizontal advection of DIC. The calculated CO2 fluxes ranged from -2.3 mmol m(-2) d(-1) in areas with stratified waters to over 25 mmol m(-2) d(-1) for mixed areas. Positive values indicate an ocean-to-atmosphere flux. Our findings suggest that the Gulf of Tehuantepec is a major source of CO2 into the atmosphere.
  • Source:
    Journal of Geophysical Research-Oceans, 120(12), 7752-7770.
  • DOI:
  • Document Type:
  • Rights Information:
  • Compliance:
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at

Version 3.26.1