Tropical and Extratropical SST Effects on the Midlatitude Storm Track.

Inatsu, Masaru; Mukougawa, Hitoshi; Xie, Shang‐Ping

doi:10.2151/jmsj.80.1069

Cited by 35 publications

(30 citation statements)

References 22 publications

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“…SST gradients may affect extratropical storm tracks through the effect on PBL temperature and baroclinicity (e.g., Inatsu et al, 2002;Tanimoto et al, 2003). In a regional atmospheric model, for example, show that the Kuroshio front affects the growth and path of an extratropical cyclone.…”

Section: Discussionmentioning

confidence: 99%

SST-Induced Surface Wind Variations over the Brazil–Malvinas Confluence: Satellite and In Situ Observations*

2005

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The confluence of the Brazil/Malvinas Currents maintains strong sea surface temperature (SST) fronts in the mid-latitude southwestern Atlantic year around. SST effects on near-surface stability and surface wind variations are examined in this region using satellite and in-situ datasets. Satellite observations show strong (weak) surface wind speeds over the warm Brazil (cold Malvinas) Current. A novel feature of this study is the construction of a high-resolution surface meteorological dataset based on historical ship observations. Analysis of this new in-situ dataset reveals increased (reduced) sea-air temperature difference over the Brazil (Malvinas) Current, indicating destabilization An additional mechanism is proposed for boundary-layer wind adjustment.2

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Section: Discussionmentioning

confidence: 99%

SST-Induced Surface Wind Variations over the Brazil–Malvinas Confluence: Satellite and In Situ Observations*

2005

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“…It is often assumed that these strong SST gradients are important contributions to the overall baroclinicity and hence storm growth, and some recent studies have indeed supported this (e.g. Inatsu et al 2002;Nakamura et al 2004;Brayshaw et al 2008;Nakamura et al 2008). There has been much speculation that SST variations in the Gulf Stream region may lead to variations in baroclinicity which could affect storm growth and so influence the whole of the storm track (e.g.…”

Section: Introductionmentioning

confidence: 99%

Storm track sensitivity to sea surface temperature resolution in a regional atmosphere model

et al. 2009

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A high resolution regional atmosphere model is used to investigate the sensitivity of the North Atlantic storm track to the spatial and temporal resolution of the sea surface temperature (SST) data used as a lower boundary condition. The model is run over an unusually large domain covering all of the North Atlantic and Europe, and is shown to produce a very good simulation of the observed storm track structure. The model is forced at the lateral boundaries with 15-20 years of data from the ERA-40 reanalysis, and at the lower boundary by SST data of differing resolution. The impacts of increasing spatial and temporal resolution are assessed separately, and in both cases increasing the resolution leads to subtle, but significant changes in the storm track. In some, but not all cases these changes act to reduce the small storm track biases seen in the model when it is forced with low-resolution SSTs. In addition there are several clear mesoscale responses to increased spatial SST resolution, with surface heat fluxes and convective precipitation increasing by 10-20% along the Gulf Stream SST gradient.

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“…On the warmer flank of an SST front, a decrease of atmospheric static stability intensifies vertical mixing, and brings fastmoving air from aloft to accelerate the surface wind Xie et al 1998). SST variations modulate the growth of extratropical storms (baroclinic instability), potentially leading to a deeper atmospheric response (Inatsu et al 2002). An SST increase warms the ABL by sensible and latent heat and forms an in-situ low.…”

Section: Introductionmentioning

confidence: 99%

The Formation of a Surface Anticyclone over the Yellow and East China Seas in Spring

Zhang

Liu

Xie

et al. 2011

Journal of the Meteorological Society of Japan

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A surface anticyclone develops in April over the Yellow-East China Seas. The Yellow-East China Sea anticyclone (YESA) is confined in the marine atmospheric boundary layer but highly influential during the onset of sea fog season along the Chinese coast. This paper investigates the mechanism for YESA formation using atmospheric reanalysis, satellite observations and model experiments. Our analysis indicates that YESA is composed of three parts: (1) the westerlies to the north are the surface extension of the westerly wind jet; (2) the southerlies on the Chinese coast are due to the thermal wind between the warm continent and cool Yellow-East China Seas; (3) the northeasterlies to the south are due to the thermal wind between the cool East China Sea and warm Kuroshio Current. The regional atmospheric model successfully simulates the YESA under realistic boundary conditions. In an experiment where the Bohai-Yellow Seas are replaced with flat land, the surface anticyclone is pushed south and forms offshore along the new land-sea boundary, consistent with the thermal high mechanism over the cool sea surface temperature.

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Tropical and Extratropical SST Effects on the Midlatitude Storm Track.

Cited by 35 publications

References 22 publications

SST-Induced Surface Wind Variations over the Brazil–Malvinas Confluence: Satellite and In Situ Observations*

SST-Induced Surface Wind Variations over the Brazil–Malvinas Confluence: Satellite and In Situ Observations*

Storm track sensitivity to sea surface temperature resolution in a regional atmosphere model

The Formation of a Surface Anticyclone over the Yellow and East China Seas in Spring

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