FN Archimer Export Format
PT J
TI SST Indexes in the Tropical South Atlantic for Forecasting Rainy Seasons in Northeast Brazil
BT 
AF HOUNSOU-GBO, Gbekpo Aubains
   SERVAIN, Jacques
   ARAUJO, Moacyr
   CANIAUX, Guy
   BOURLES, Bernard
   FONTENELE, Diogenes
   MARTINS, Eduardo Savio P. R.
AS 1:1,2,3;2:1,4;3:3,5;4:6;5:2,7;6:1;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Res Inst Meteorol & Water Resources FUNCEME, Ave Rui Barbosa 1246, BR-60115221 Fortaleza, CE, Brazil.
   UAC, ICMPA, Unesco Chair, 072 POB 50, Cotonou, Benin.
   Brazilian Res Network Global Climate Change Rede, Ave Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP, Brazil.
   IRD, LOCEAN, F-75005 Paris, France.
   Fed Univ Pernambuco UFPE, LOFEC, Dept Oceanog, DOCEAN, Ave Arquitetura S-N, BR-50740550 Recife, PE, Brazil.
   Meteo France CNRS, CNRM UMR 3589, 42 Ave G Coriolis, F-31057 Toulouse 01, France.
   IRD, IMAGO, F-29280 Plouzane, France.
C2 FUNCEME, BRAZIL
   UNIV ABOMEY CALAVI, BENIN
   REDE CLIMA, BRAZIL
   IRD, FRANCE
   FED UNIV PERNAMBUCO UFPE, BRAZIL
   CNRM (METEO FRANCE), FRANCE
   IRD, FRANCE
SI BREST
SE IRD
IN DOAJ
IF 1.048
TC 10
UR https://archimer.ifremer.fr/doc/00623/73547/73807.pdf
LA English
DT Article
CR PIRATA
DE ;Brazilian Northeast;rainfall;predictability;tropical Atlantic
AB May-to-July and February-to-April represent peak rainy seasons in two sub-regions of Northeast Brazil (NEB): Eastern NEB and Northern NEB respectively. In this paper, we identify key oceanic indexes in the tropical South Atlantic for driving these two rainy seasons. In Eastern NEB, the May-to-July rainfall anomalies present a positive relationship with the previous boreal winter sea surface temperature anomalies (SSTA) in the southeast tropical Atlantic (20 degrees-10 degrees S; 10 degrees W-5 degrees E). This positive relationship, which spread westward along the southern branch of the South Equatorial Current, is associated with northwesterly surface wind anomalies. A warmer sea surface temperature in the southwestern Atlantic warm pool increases the moisture flux convergence, as well as its ascending motion and, hence, the rainfall along the adjacent coastal region. For the Northern NEB, another positive relationship is observed between the February-to-April rainfall anomalies and the SSTA of the previous boreal summer in the Atlantic Nino region (3 degrees S-3 degrees N; 20 degrees W-0 degrees). The negative remote relationship noticeable between the Northern NEB rainfall and the concomitant Pacific Nino/Nina follows cold/warm events occurring during the previous boreal summer in the eastern equatorial Atlantic. The southeastern tropical Atlantic and Atlantic Nino SSTA indexes may, then, be useful to predict seasonal rainfall over the Eastern and Northern NEB, respectively, for about a 6 month leading period. The ability of both southeastern tropical Atlantic and Atlantic Nino SSTA indexes to forecast the Eastern and Northern NEB rainfall, with about a 6 month lead time, is improved when these indexes are respectively combined with the Nino3 (5 degrees S-5 degrees N; 150 degrees-90 degrees W) and the northeast subtropical Atlantic (20 degrees N-35 degrees N, 45 degrees W-20 degrees W), mainly from the 1970's climate shift. 
PY 2019
PD JUL
SO Atmosphere
SN 2073-4433
PU Mdpi
VL 10
IS 6
UT 000473749900044
DI 10.3390/atmos10060335
ID 73547
ER

EF