Journal
OCEAN MODELLING
Volume 65, Issue -, Pages 11-24Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ocemod.2013.01.007
Keywords
Regional modeling; Atmospheric forcing; Statistical downscaling; Peru-Chile upwelling system; El Nino
Categories
Funding
- IRD/DSF Spirales project
- CALMIP [2012-[1044]]
- ANR
- AXA
- ANR, France [ANR-08-VULN-12]
Ask authors/readers for more resources
Simulating the oceanic circulation in Eastern Boundary Upwelling Systems (EBUS) is a challenging issue due to the paucity of wind stress products of a sufficiently high spatial resolution to simulate the observed upwelling dynamics. In this study, we present the results of regional simulations of the Humboldt current system (Peru and Chile coasts) to assess the value of a statistical downscaling model of surface forcing. Twin experiments that differ only from the momentum flux forcing are carried out over the 1992-2000 period that encompasses the major 1997/98 El Nino/La Nina event. It is shown that the mean biases of the oceanic circulation can be drastically reduced simply substituting the mean wind field of NCEP reanalysis by a higher resolution mean product (QuikSCAT). The statistical downscaling model improves further the simulations allowing more realistic intraseasonal and interannual coastal undercurrent variability, which is notoriously strong off Central Peru and Central Chile. Despite some limitations, our results suggest that the statistical approach may be useful to regional oceanic studies of present and future climates. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available