GSTDTAP  > 地球科学
DOI10.1016/j.atmosres.2017.06.004
Intense air-sea exchanges and heavy orographic precipitation over Italy: The role of Adriatic sea surface temperature uncertainty
Stocchi, Paolo; Davolio, Silvio
2017-11-01
发表期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
EISSN1873-2895
出版年2017
卷号196
文章类型Article
语种英语
国家Italy
英文摘要

Strong and persistent low-level winds blowing over the Adriatic basin are often associated with intense precipitation events over Italy. Typically, in case of moist southeasterly wind (Sirocco), rainfall affects northeastern Italy and the Alpine chain, while with cold northeasterly currents (Bora) precipitations are localized along the eastern slopes of the Apennines and central Italy coastal areas. These events are favoured by intense air-sea interactions and it is reasonable to hypothesize that the Adriatic sea surface temperature (SST) can affect the amount and location of precipitation.


High-resolution simulations of different Bora and Sirocco events leading to severe precipitation are performed using a convection-permitting model (MOLOCH). Sensitivity experiments varying the SST initialization field are performed with the aim of evaluating the impact of SST uncertainty on precipitation forecasts, which is a relevant topic for operational weather predictions, especially at local scales. Moreover, diagnostic tools to compute water vapour fluxes across the Italian coast and atmospheric water budget over the Adriatic Sea have been developed and applied in order to characterize the air mass that feeds the precipitating systems. Finally, the investigation of the processes through which the SST influences location and intensity of heavy precipitation allows to gain a better understanding on mechanisms conducive to severe weather in the Mediterranean area and in the Adriatic basin in particular.


Results show that the effect of the Adriatic SST (uncertainty) on precipitation is complex and can vary considerably among different events. For both Bora and Sirocco events, SST does not influence markedly the atmospheric water budget or the degree of moistening of air that flows over the Adriatic Sea. SST mainly affects the stability of the atmospheric boundary layer, thus influencing the flow dynamics and the orographic flow regime, and in turn, the precipitation pattern.


英文关键词Heavy precipitation SST Air-sea interaction Orography Water budget
领域地球科学
收录类别SCI-E
WOS记录号WOS:000409290200007
WOS关键词FLASH-FLOOD ; TORRENTIAL RAINS ; BORA EVENT ; SENSITIVITY ; PARAMETERIZATION ; SIMULATIONS ; FORECASTS ; OUTBREAK ; LIGURIA ; FLUXES
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/38397
专题地球科学
作者单位CNR, Natl Res Council Italy, ISAC, Bologna, Italy
推荐引用方式
GB/T 7714
Stocchi, Paolo,Davolio, Silvio. Intense air-sea exchanges and heavy orographic precipitation over Italy: The role of Adriatic sea surface temperature uncertainty[J]. ATMOSPHERIC RESEARCH,2017,196.
APA Stocchi, Paolo,&Davolio, Silvio.(2017).Intense air-sea exchanges and heavy orographic precipitation over Italy: The role of Adriatic sea surface temperature uncertainty.ATMOSPHERIC RESEARCH,196.
MLA Stocchi, Paolo,et al."Intense air-sea exchanges and heavy orographic precipitation over Italy: The role of Adriatic sea surface temperature uncertainty".ATMOSPHERIC RESEARCH 196(2017).
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