Observing the Galápagos–EUC interaction : insights and challenges
Karnauskas, Kristopher B.
Busalacchi, Antonio J.
MetadataShow full item record
KeywordAtmosphere-ocean interaction; Currents; In situ observations; Model evaluation/performance; Pacific Ocean; Tropics
Although sustained observations yield a description of the mean equatorial current system from the western Pacific to the eastern terminus of the Tropical Atmosphere Ocean (TAO) array, a comprehensive observational dataset suitable for describing the structure and pathways of the Equatorial Undercurrent (EUC) east of 95°W does not exist and therefore climate models are unconstrained in a region that plays a critical role in ocean–atmosphere coupling. Furthermore, ocean models suggest that the interaction between the EUC and the Galápagos Islands (92°W) has a striking effect on the basic state and coupled variability of the tropical Pacific. To this end, the authors interpret historical measurements beginning with those made in conjunction with the discovery of the Pacific EUC in the 1950s, analyze velocity measurements from an equatorial TAO mooring at 85°W, and analyze a new dataset from archived shipboard ADCP measurements. Together, the observations yield a possible composite description of the EUC structure and pathways in the eastern equatorial Pacific that may be useful for model validation and guiding future observation.
Author Posting. © American Meteorological Society, 2010. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 40 (2010): 2768–2777, doi:10.1175/2010JPO4461.1.
Suggested CitationJournal of Physical Oceanography 40 (2010): 2768–2777
Showing items related by title, author, creator and subject.
Swart, Sebastiaan; Gille, Sarah T.; Delille, Bruno; Josey, Simon A.; Mazloff, Matthew R.; Newman, Louise; Thompson, Andrew F.; Thomson, James M.; Ward, Brian; du Plessis, Marcel; Kent, Elizabeth; Girton, James B.; Gregor, Luke; Heil, Petra; Hyder, Patrick; Pezzi, Luciano Ponzi; de Souza, Ronald Buss; Tamsitt, Veronica; Weller, Robert A.; Zappa, Christopher J. (Frontiers Media, 2019-07-31)Air-sea and air-sea-ice fluxes in the Southern Ocean play a critical role in global climate through their impact on the overturning circulation and oceanic heat and carbon uptake. The challenging conditions in the Southern ...
Gerbi, Gregory P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-06)This study presents observations of turbulence dynamics made during the low winds portion of the Coupled Boundary Layers and Air-Sea Transfer experiment (CBLAST-Low). Observations were made of turbulent fluxes, turbulent ...
Bromirski, Peter D.; Stephen, Ralph A.; Gerstoft, Peter (John Wiley & Sons, 2013-07-25)Recent studies attribute land double-frequency (DF) microseism observations to deep water generation. Here we show that near-coastal generation is generally the dominant source region. This determination is based on ...