Heat budget in the Japan Sea

Hirose, Nobuyoshi; Kim, Cheol Ho; Yoon, Jong Hwan

doi:10.1007/bf02238321

Cited by 92 publications

(59 citation statements)

References 7 publications

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“…All three RCMs show consistently that the annual mean heat supply to the atmosphere is larger than 100 W/m 2 along the Kuroshio and the TC paths as well as in the northeastern part of the EJS in both the present simulations and the future projections ( Figure 14). The net heat flux in the northeastern EJS is larger than that estimated by Hirose et al [1996]. This seems to result from the fact that our model does not have sea ice.…”

Section: Net Surface Heat Fluxcontrasting

confidence: 55%

Climate change projection in the Northwest Pacific marginal seas through dynamic downscaling

et al. 2014

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This study presents future climate change projections in the Northwest Pacific (NWP) marginal seas using dynamic downscaling from global climate models (GCMs). A regional climate model (RCM) for the Northwest Pacific Ocean was setup and integrated over the period from 2001 to 2100. The model used forcing fields from three different GCM simulations to downscale the effect of global climate change. MIROC, ECHAM, and HADCM were selected to provide climate change signals for the RCM. These signals were calculated from the GCMs using Cyclostationary Empirical Orthogonal Function analysis and added to the present lateral open boundary and the surface forcing. The RCM was validated by comparing hindcast result with the observation. It was able to project detailed regional climate change processes that GCMs were not able to resolve. A relatively large increases of water temperature were found in the marginal seas. However, only a marginal change was found along the Kuroshio path. Heat supply to the atmosphere decreases in most study areas due to a slower warming of the sea surface compared to the atmosphere. The RCM projection suggests that the temperature of the Yellow Sea Bottom Cold Water will gradually increase by 2100. Volume transports through major straits except the Taiwan Strait in the marginal seas are projected to increase slightly in future. Increased northeasterly wind stress in the East China Sea may also result in the transport change.

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Section: Net Surface Heat Fluxcontrasting

confidence: 55%

Climate change projection in the Northwest Pacific marginal seas through dynamic downscaling

et al. 2014

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“…In the present study, we particularly examine December, which is the month with the largest LHF over the Japan Sea (e.g., Hirose et al 1996). The analysis period is 21 years, from 1990 to 2010.…”

Section: Data Setsmentioning

confidence: 99%

Variations in Latent Heat Flux over the Eastern Japan Sea in December

Sugimoto

Hirose

2014

SOLA

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Variations in latent heat flux (LHF), calculated from daily variables in the OAFlux dataset, were investigated over the Japan Sea for December of 1990−2010 because the December is the month with the largest LHF release. The largest temporal variations in LHF occurred over the eastern Japan Sea (EJS; 137°E−140°E, 38°N−43°N), showing an interannual-scale variation. By performing simple experiments with combinations of raw daily data and daily climatological data, we quantitatively assessed the relative contributions of saturated specific humidity at sea surface temperature (SST), surface air humidity, and surface wind speed in determining the LHF over the EJS. Results showed that SST (saturated specific humidity), which is associated with the Tsushima Warm Current, predominantly determines the LHF; a huge evaporation in the state of the positive SST anomaly. The LHF in the EJS has a strong influence on precipitation over the northern Japanese Islands.(Citation: Sugimoto, S. and N. Hirose, 2014: Variations in latent heat flux over the eastern Japan Sea in December. SOLA, 10, 1−4,

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“…This relationship is consistent with the observed fact that the cold-air outbreak is enhanced in warm winters (i.e., the positive AO phase) because the enhanced outbreak must cause the intense sea surface cooling. Note that the sea surface heat flux is directed to the atmosphere over East Asian marginal seas during winter (Hirose et al 1996(Hirose et al , 1999. Minobe et al (2004) also investigated the SST decadal variation over the Japan Sea, and found a phase difference of 60°to 90°between the southwestern and northeastern Japan Sea for the decadal complex EOF first mode.…”

Section: B Sst Over the East Asian Marginal Seasmentioning

confidence: 99%

“…4. Nevertheless, the low SLPs are likely to strengthen when advancing over the East Asian marginal seas because the atmosphere gains heat over these areas during winter (Hirose et al 1996(Hirose et al , 1999. The cold-air outbreaks result in sea surface cooling, and so it is reasonable that SST northeast of the Noto Peninsula is relatively low in spite of the warm winter in the positive AO phase.…”

Section: Air-sea Interaction Over the East Asian Marginal Seasmentioning

confidence: 99%

Atmosphere and Marginal-Sea Interaction Leading to an Interannual Variation in Cold-Air Outbreak Activity over the Japan Sea

Isobe

Beardsley

2007

Journal of Climate

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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.

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Heat budget in the Japan Sea

Cited by 92 publications

References 7 publications

Climate change projection in the Northwest Pacific marginal seas through dynamic downscaling

Climate change projection in the Northwest Pacific marginal seas through dynamic downscaling

Variations in Latent Heat Flux over the Eastern Japan Sea in December

Atmosphere and Marginal-Sea Interaction Leading to an Interannual Variation in Cold-Air Outbreak Activity over the Japan Sea

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