edu.ucar.opensky::articles:22399 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:40:07.122119 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7s75kcj The modeling of the North Equatorial Countercurrent in the Community Earth System Model and its oceanic component 2019-02-01T00:00:00Z publication https://n2t.org/ark:/85065/d7s75kcj https://doi.org/10.1029/2018MS001521 Sun, Z. author Liu, H. author Lin, P. author Tseng, Y. author Small, R. Justin author Bryan, Frank O. author UCAR/NCAR - Library publisher The North Equatorial Countercurrent (NECC) simulated by a coupled ocean-atmosphere model and its oceanic component have been investigated and compared against oceanographic observations. Coupled model simulations using the Community Earth System Model version 2 are compared against ocean-ice simulations forced by the second phase of the Coordinated Ocean-ice Reference Experiments (CORE) data set. The modeled circulation biases behave differently to the west of and to the east of 120 degrees W: the CORE-forced ocean model largely underestimates the NECC transport to the west and the coupled model underestimates it to the east. Further analysis suggests that the surface wind stress and its curl is the most important forcing term for correctly simulating the NECC in both models. West of 120 degrees W, the NECC biases in the ocean model are attributed to the southward movement of the maximum easterly trade winds in the Northern Hemisphere and the associated wind stress curl (WSC) pattern; east of 120 degrees W, the NECC biases in the coupled model are attributed to the weak northward cross-equatorial winds and southwestward gap winds, which lead to a weak WSC gradient at the latitude of NECC. Further analysis confirms that the WSC biases comes mainly from the zonal wind bias, which may in turn relate to the protocol of CORE-II of adjusting reanalysis winds toward satellite data, which include the relative wind effect. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2019 Author(s). This work is licensed under a Creative Commons Attribution NonCommercial-NoDerivatives 4.0 International license. None eng geoscientificInformation