Atmosphere and marginal-sea interaction leading to an interannual variation in cold-air outbreak activity over the Japan Sea
Beardsley, Robert C.
MetadataShow full item record
KeywordAir-sea interactions; Interannual variation; Arctic Oscillation; Remote sensing; Buoy observations
The interannual variation in cold-air outbreak activity over the Japan Sea is investigated using Japan Meteorological Agency buoy 21002 and Quick Scatterometer (QuikSCAT) wind data, Japan Oceanographic Data Center sea surface temperature (SST) data, NCEP–NCAR reanalysis surface wind and sea level pressure (SLP) data, and the winter Arctic Oscillation (AO) index of Thompson and Wallace. Cold-air outbreaks occur during the “winter” November–March period, and wind data for this season for the 19-winter period 1981–2000 were analyzed. Wavelet spectra averaged between 5- and 15-day periods were used to evaluate the intensity of cold-air outbreaks quantitatively. The winter mean wavelet spectra exhibited a clear interannual variation and a significant positive correlation with the AO index, indicating that intensive cold-air outbreaks frequently occur during relatively warm winters caused by a quasi-decadal AO. Based on the SST and SLP data, the low atmospheric surface pressure disturbances tend to develop over the warm East China Sea in warm winters in the positive AO phase. As these low SLP disturbances advance toward the northern Japan islands during the positive AO phase, they intensify more, leading to stronger cold-air outbreaks over the Japan Sea and increased sea surface cooling over the northern Japan Sea.
Author Posting. © American Meteorological Society, 2007. 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 Climate 20 (2007): 5707–5714, doi:10.1175/2007JCLI1779.1.
Showing items related by title, author, creator and subject.
Interannual variation in summer N2O concentration in the hypoxic region of the northern Gulf of Mexico, 1985–2007 Kim, I.-N.; Lee, K.; Bange, Hermann W.; Macdonald, Alison M. (Copernicus Publications on behalf of the European Geosciences Union, 2013-11-01)Microbial nitrous oxide (N2O) production in the ocean is enhanced under low-oxygen (O2) conditions. This is especially important in the context of increasing hypoxia (i.e., oceanic zones with extremely reduced O2 ...
Interannual variations in continental-scale net carbon exchange and sensitivity to observing networks estimated from atmospheric CO2 inversions for the period 1980 to 2005 Gurney, Kevin R.; Baker, David F.; Rayner, Peter; Denning, Scott (American Geophysical Union, 2008-08-26)Interannually varying net carbon exchange fluxes from the TransCom 3 Level 2 Atmospheric Inversion Intercomparison Experiment are presented for the 1980 to 2005 time period. The fluxes represent the model mean, net carbon ...
Brugler, Eric T. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-09)Between 2002 and 2011 a single mooring was maintained in the core of the Pacific Water boundary current in the Alaskan Beaufort Sea near 152° W. Using velocity and hydrographic data from six year-long deployments during ...