 |
| Titel |
Synoptic environment associated with heavy rainfall events on the coastland of Northeast Brazil |
| VerfasserIn |
P. T. Oliveira, K. C. Lima, C. M. Santos e Silva |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7340
|
| Digitales Dokument |
URL |
| Erschienen |
In: 8th EGU Alexander von Humboldt Conference "Natural Disasters, Global Change, and the Preservation of World Heritage Sites" ; Nr. 35 (2013-07-10), S.73-78 |
| Datensatznummer |
250019100
|
| Publikation (Nr.) |
 copernicus.org/adgeo-35-73-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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 Agência Nacional de Águas 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 Niña years and minimal in El
Niño 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. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|