NDLI: Synoptic environment associated with heavy rainfall events on the coastland of Northeast Brazil

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Synoptic environment associated with heavy rainfall events on the coastland of Northeast Brazil

Content Provider	Semantic Scholar
Author	Oliveira, Priscilla Teles De Lima, Kellen Carla Silva, Cláudio M. Santos E
Copyright Year	2013
Abstract	Abstract. Northeast Brazil (NEB) has an extensive coastal area, often hit by natural disasters that bring many social and economic losses. The objective of this work was to study the synoptic environment associated with a heavy rainfall event (HRE) on the coastland of NEB. We used daily rainfall data for coastal area of NEB between the states of Rio Grande do Norte and Bahia, divided into two subregions: north and south coastland. This data was obtained from the hydrometeorological network managed by the Agencia Nacional de Aguas and the daily data reanalysis from the ERAInterim. For the selection of HRE the technique of quantiles was used, thus defined HRE where at least one rain gauge recorded rainfall above 95th percentile. The interannual distribution of events showed occurrence maximum in La Nina years and minimal in El Nino years. The results suggest that the HRE were formed mainly due to the action of upper-level cyclonic vortex, in hight levels, and due to the action to South Atlantic convergence zone, in low levels.
Starting Page	73
Ending Page	78
Page Count	6
File Format	PDF HTM / HTML
DOI	10.5194/adgeo-35-73-2013
Volume Number	35
Alternate Webpage(s)	https://www.adv-geosci.net/35/73/2013/adgeo-35-73-2013.pdf
Alternate Webpage(s)	https://doi.org/10.5194/adgeo-35-73-2013
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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