FN Archimer Export Format
PT J
TI North Pacific Gyre Oscillation modulates seasonal timing and ecosystem functioning in the California Current upwelling system
BT 
AF CHENILLAT, Fanny
   RIVIERe, Pascal
   CAPET, Xavier
   DI LORENZO, E.
   BLANKE, Bruno
AS 1:1;2:1;3:2,4;4:3;5:2,4;
FF 1:;2:;3:;4:;5:;
C1 Univ Bretagne Occidentale, Inst Univ Europeen Mer, Lab Sci Environm Marin, UMR 6539, F-29280 Plouzane, France.
   Univ Bretagne Occidentale, IFREMER, Lab Phys Oceans, UMR 6523, F-29238 Brest 3, France.
   Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
C2 UBO, FRANCE
   CNRS, FRANCE
   GEORGIA INST TECHNOL, USA
IF 3.98
TC 63
UR https://archimer.ifremer.fr/doc/00063/17396/15062.pdf
LA English
DT Article
AB On interannual and longer time scales, dynamical and biogeochemical fluctuations in the North Pacific are dominated by two modes of variability, namely the Pacific Decadal Oscillation and the North Pacific Gyre Oscillation (NPGO). In this study the regional expression of the NPGO in the California Current System (CCS) is detailed. The statistical relationship between the NPGO index and nearshore wind variability (mostly upwelling favorable) along the U. S. West coast is strongest in the wintertime (December to March) off Central California. Most importantly, NPGO fluctuations are associated with a seasonal shift of 1-2 months in the onset of the upwelling season. Regional numerical simulations show that an early (late) onset of upwelling during the positive (negative) phase of the NPGO leads to a more (less) productive planktonic ecosystem throughout spring and summer, i.e., several months after the direct NPGO effects on the system have ceased. These results bring new light on the California ecosystem variability as observed in atypical years such as 2005 and 2007. Citation: Chenillat, F., P. RiviSre, X. Capet, E. Di Lorenzo, and B. Blanke (2012), North Pacific Gyre Oscillation modulates seasonal timing and ecosystem functioning in the California Current upwelling system, Geophys. Res. Lett., 39, L01606, doi:10.1029/2011GL049966.
PY 2012
PD JAN
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 39
IS L01606
UT 000299179100005
BP 1
EP 6
DI 10.1029/2011GL049966
ID 17396
ER

EF