Oceanic origin of the interannual and interdecadal variability of the summertime western Pacific subtropical high

Details Oceanic origin of the interannual and interdecadal variability of the summertime western Pacific subtropical high Oceanic origin of the interannual and interdecadal variability of the summertime western Pacific subtropical high

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3513701w&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 13, CiteID L13701

Physics

10

Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513), Atmospheric Processes: General Circulation (1223), Atmospheric Processes: Model Calibration (1846)

Scientific paper

A recent study found that the western Pacific Subtropical High (WPSH) exhibits both quasi-biennial (2-3 years) and low-frequency (3-5 years) oscillations. While the quasi-biennial oscillation is prominent in 1990s, the 3-5 year oscillation is dominant in 1980s. The two oscillations were attributed to the atmospheric response to the remote forcing of sea surface temperature (SST) in the maritime continent and equatorial central-eastern Pacific, respectively. The present study confirms this hypothesis. When forced by observational SST, the ensemble simulation with the NCAR CAM2 model reasonably reproduces the main characteristics of quasi-biennial oscillation and low-frequency oscillations of the WPSH. The quasi-biennial oscillation is associated with anomalous overturning circulation characterized by enhanced convection over the maritime continent and subsidence over the western North Pacific. The low-frequency oscillation is mainly modulated by remote forcing of SSTA in the equatorial central-eastern Pacific. The model reasonably reproduces the interdecadal transition of the WPSH from low-frequency oscillation in 1980s to quasi-biennial oscillation in 1990s, suggesting that the SST forcing is an essential factor to modulate the interdecadal variation of the WPSH.

Affiliated with

Also associated with

No associations

Rating

Oceanic origin of the interannual and interdecadal variability of the summertime western Pacific subtropical high does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Oceanic origin of the interannual and interdecadal variability of the summertime western Pacific subtropical high, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oceanic origin of the interannual and interdecadal variability of the summertime western Pacific subtropical high will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1318258