Influence of the Sea Surface Temperature on the Stratification of Airmass and the Cumulus Activity over the East China Sea in the Baiu Season

doi:10.2467/mripapers1950.25.3_159

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…An SST increase is expected to cause more intense precipitation in downwind coastal regions (Lenderink et al, 2009;Meredith et al, 2015). The warming and moistening of the atmospheric boundary layer due to the enhanced heat and moisture release from the warmer sea surface can contribute to the destabilization of the air mass, which enhances conditional convective instability and ultimately increases precipitation (Ninomiya, 1974). An increase of approximately 7% is expected in the rate of precipitation per degree, according to the Clausius-Clapeyron relation.…”

Section: Discussionmentioning

confidence: 99%

“…In response to climate change, changes in sea surface temperature (SST) can be one of the key factors that will induce extreme precipitation in coastal regions (Lenderink et al, 2009;Meredith et al, 2015). Higher SSTs can lead to extreme precipitation by increasing air-sea fluxes, which in turn acts to moisten and destabilize the troposphere and/or maintain its unstable condition (Ninomiya, 1974). In the Mediterranean Sea, Volosciuk et al (2016) verified the above hypothesis by using long-term numerical simulations and documented that warmer SSTs can enhance extreme precipitation during summer.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivity of Midlatitude Heavy Precipitation to SST: A Case Study in the Sea of Japan Area on 9 August 2013

Iizuka

Nakamura

2019

JGR Atmospheres

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This study investigates the influence of sea surface temperature (SST) over the Sea of Japan on a heavy precipitation event that occurred over the northern part (Northern Tohoku region) of Japan's largest island on 9 August 2013. Sensitivity experiments with the Weather Research and Forecasting model show that warmer (cooler) SSTs prescribed over the Sea of Japan in the simulations lead to an increase (decrease) in 24‐hr precipitation averaged within the Northern Tohoku region, especially on the Sea of Japan (i.e., windward) side. Though no significant relationship is found between the local maxima and SSTs over the Sea of Japan, those SST values over the Sea of Japan affect the evolution of the intense convective precipitation; higher (lower) SSTs act to shift the location of intense precipitation on the upwind (downwind) side in the present event. The different evolution results in a different interaction with the downstream orography, leading to no significant relationship between the local maxima of intense precipitation and SSTs. The differences arise from the sensitivity of convective updraft to SSTs. The simulations thus suggest that uncertainties in currently available SST products may alter both the area‐averaged precipitation and the geographical locations of intense precipitation, which can potentially impact flash flood and landslide warnings.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitivity of Midlatitude Heavy Precipitation to SST: A Case Study in the Sea of Japan Area on 9 August 2013

Iizuka

Nakamura

2019

JGR Atmospheres

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A Case Study of a Heavy Precipitation Event along the Baiu Front in Northern Kyushu, 23 July 1982: Nagasaki Heavy Rainfall

Ogura

Asai

Dohi

1985

Journal of the Meteorological Society of Japan

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A case study is made of an exceptionally heavy rainstorm that hit the northwestern coastal area of Kyushu, Japan, on 23 July 1982. The 5hr rainfall accumulation was as high as 412mm at the city of Nagasaki.The precipitation occurred along the warm front associated with a medium scale disturbance that developed along the Baiu front. The atmosphere in the pre-storm period was very moist through virtually the entire troposphere and its static stability was conditionally unstable with a lifted index of -1.5*, thus exhibiting characteristics more similar to the tropical atmosphere than the typical pre-storm environment over the midwestern United States in spring seasons.Prior to the development of heavy precipitation over the Nagasaki area, an intensive rainband was propagating with a speed of 40km hr-1 eastsoutheastward over northwestern Kyushu.Its structure is found to be different from the structure of typical tropical squall clusters in that the heaviest rainfalll occurred in the middle of the rainband without a well defined leading edge.A dramatic change occurred in the rainband when its southern tip reached the Nagasaki area; it stopped propagating and stayed there for the next 5hr. Its line structure changed to a blob structure at the meso-* scale (*100km).The timing of the precipitation development at Nagasaki coincided with the peak period of the incursion of very moist air associated with the southwesterly low-level jet. During the period of heavy precipitation, a new cloud cluster formed over the sea 300km west of Nagasaki. It kept developing and propagating eastward with a speed of 60km hr-1, and eventually merged with the rainstorm over Nagasaki.These observations strongly suggest that the Nagasaki rainstorm was trapped orographically.Several other heavy precipitation events are cited which also occurred in association with medium scale disturbances along the Baiu front and in which the precipitation developed over the coast areas upwind of the low-level jets.

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Remote Effect of Kuroshio Warm SSTs in the East China Sea on Heavy Rainfall in Southern Kyushu, Japan, on 3 July 2020

Kawano

Kawamura

2022

SOLA

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Influence of the Sea Surface Temperature on the Stratification of Airmass and the Cumulus Activity over the East China Sea in the Baiu Season

Cited by 3 publications

References 7 publications

Sensitivity of Midlatitude Heavy Precipitation to SST: A Case Study in the Sea of Japan Area on 9 August 2013

Sensitivity of Midlatitude Heavy Precipitation to SST: A Case Study in the Sea of Japan Area on 9 August 2013

A Case Study of a Heavy Precipitation Event along the Baiu Front in Northern Kyushu, 23 July 1982: Nagasaki Heavy Rainfall

Remote Effect of Kuroshio Warm SSTs in the East China Sea on Heavy Rainfall in Southern Kyushu, Japan, on 3 July 2020

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