Ocean acidification along the Gulf Coast and East Coast of the USA

Rik Wanninkhof, Leticia Barbero, Robert Byrne, Wei Jun Cai, Wei Jen Huang, Jia Zhong Zhang, Molly Baringer, Chris Langdon

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

As part of an effort to monitor changes in inorganic carbon chemistry of the coastal ocean, near-synoptic cruises are being conducted in the Northern Gulf of Mexico and along the East Coast of the United States. Here we describe observations obtained on a cruise in the summer of 2012 and compare them with results from a cruise following a similar track in 2007. The focus is on describing spatial patterns of aragonite saturation state (ΩAr). This parameter is an indicator of ecosystem health, in particular for calcifying organisms. The results show large-scale regional trends from different source waters at the northeastern and southwestern edges of the domain, along with the modulating effects of remineralization/respiration and riverine inputs. The broader patterns and changes over five years along the coast can be well described by the impacts of large-scale circulation, notably changes in source water contributions. Changes in the well-buffered Loop Current and Gulf Stream with high ΩAr impact the waters in the southern part of the study area. The less buffered southward coastal currents with low ΩAr originating from the Labrador Sea and Gulf of St. Lawrence impact the ΩAr patterns in the Northern regions. The expected 2% average decrease in ΩAr in the surface mixed layer due to increasing atmospheric CO2 levels over the 5-year period is largely overshadowed by local and regional variability from changes in hydrography and mixed layer dynamics.

Original languageEnglish (US)
Pages (from-to)54-71
Number of pages18
JournalContinental Shelf Research
Volume98
DOIs
StatePublished - 2015

Fingerprint

Gulf Stream
coasts
Gulf of Saint Lawrence
mixed layer
Newfoundland and Labrador
water currents
coast
Gulf of Mexico
hydrology
chemistry
coastal current
remineralization
oceans
ecosystem health
inorganic carbon
hydrography
aragonite
water
carbon
surface layer

Keywords

  • Coastal ocean
  • East Coast
  • Inorganic carbon system
  • Northern Gulf of Mexico
  • Ocean acidification

ASJC Scopus subject areas

  • Aquatic Science
  • Geology
  • Oceanography

Cite this

Wanninkhof, R., Barbero, L., Byrne, R., Cai, W. J., Huang, W. J., Zhang, J. Z., ... Langdon, C. (2015). Ocean acidification along the Gulf Coast and East Coast of the USA. Continental Shelf Research, 98, 54-71. https://doi.org/10.1016/j.csr.2015.02.008

Ocean acidification along the Gulf Coast and East Coast of the USA. / Wanninkhof, Rik; Barbero, Leticia; Byrne, Robert; Cai, Wei Jun; Huang, Wei Jen; Zhang, Jia Zhong; Baringer, Molly; Langdon, Chris.

In: Continental Shelf Research, Vol. 98, 2015, p. 54-71.

Research output: Contribution to journalArticle

Wanninkhof, R, Barbero, L, Byrne, R, Cai, WJ, Huang, WJ, Zhang, JZ, Baringer, M & Langdon, C 2015, 'Ocean acidification along the Gulf Coast and East Coast of the USA', Continental Shelf Research, vol. 98, pp. 54-71. https://doi.org/10.1016/j.csr.2015.02.008
Wanninkhof, Rik ; Barbero, Leticia ; Byrne, Robert ; Cai, Wei Jun ; Huang, Wei Jen ; Zhang, Jia Zhong ; Baringer, Molly ; Langdon, Chris. / Ocean acidification along the Gulf Coast and East Coast of the USA. In: Continental Shelf Research. 2015 ; Vol. 98. pp. 54-71.
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