Responses of carbonate system and CO2 flux to extended drought and intense flooding in a semiarid subtropical estuary
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

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Query Builder

Query box

Help
Clear All

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

i

Responses of carbonate system and CO2 flux to extended drought and intense flooding in a semiarid subtropical estuary

Filetype[PDF-1.00 MB]


Details You May Also Like

Details:

  • Journal Title:
    Limnology and Oceanography
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    Globally, estuaries are considered important CO2 sources to the atmosphere. However, estuarine water carbonate chemistry and CO2 flux studies have focused on temperate and high latitude regions, leaving a significant data gap in subtropical estuaries. In this study, we examined water column carbonate system and air-water CO2 flux in the Mission-Aransas Estuary, a subtropical semiarid estuary in the northwestern Gulf of Mexico, by collecting samples at five System Wide Monitoring Program stations from 05/2014 to 04/2015. The carbonate system parameters (total alkalinity [TA], dissolved inorganic carbon [DIC], pH, CO2 partial pressure [pCO(2)], and carbonate saturation state with respect to aragonite [(Ar)]) and air-water CO2 flux all displayed substantial seasonal and spatial variations. Based on freshwater inflow conditions, a drought period occurred between 05/2014 and 02/2015, while a flooding period occurred from 03/2015 to 04/2015. Average DIC was 2194.7 +/- 156.8 mol kg(-1) and 2132.5 +/- 256.8 mol kg(-1), TA was 2497.6 +/- 172.1 molkg(-1) and 2333.4 +/- 283.1 mol kg(-1), pCO(2) was 477 +/- 94 atm and 529 +/- 251 atm, and CO2 flux was 28.3 +/- 18.0 mmol Cm(-2)d(-1) and 51.6 +/- 83.9 mmolCm(-2)d(-1) in the drought and flooding period, respectively. Integrated annual air-water CO2 flux during our studied period was estimated to be 12.4 +/- 3.3 molCm(-2)yr(-1), indicating that this estuary was a net CO2 source. High wind speed, warm climate, riverine input, and estuarine biogeochemical processes all contributed to the high CO2 efflux despite the modest pCO(2) levels year round.
  • Source:
    Limnology and Oceanography, 62, S112-S130.
  • DOI:
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA15NOS4780185
  • Rights Information:
    CC BY
  • Compliance:
    Submitted
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files

More +

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.26