scholarly journals Seasonal movements of short‐beaked common dolphins(Delphinus delphis)in the north‐western Bay of Plenty, New Zealand: Influence of sea surface temperature and El Niño/La Niña

2001 ◽  
Vol 35 (2) ◽  
pp. 371-374 ◽  
Author(s):  
Dirk R. Neumann
Keyword(s):  
New Zealand ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
El Nino ◽  
Sea Surface ◽  
Seasonal Movements ◽  
Delphinus Delphis ◽  
The North ◽  
Common Dolphins ◽  
North Western

Distribution and habitat partitioning by small odontocetes in the Gully, a submarine canyon on the Scotian Shelf

1995 ◽  
Vol 73 (9) ◽  
pp. 1599-1608 ◽  
Author(s):  
Shannon Gowans ◽  
Hal Whitehead
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Submarine Canyon ◽  
Sea Surface ◽  
Scotian Shelf ◽  
Sea Floor ◽  
Delphinus Delphis ◽  
Pilot Whales ◽  
Summer Distribution ◽  
Common Dolphins

In this paper we examine the summer distribution of three species of small odontocetes in the highly productive waters in and near the Gully, a submarine canyon on the edge of the Scotian Shelf. Atlantic white-sided dolphins (Lagenorhynchus acutus) and common dolphins (Delphinus delphis) were not randomly distributed with respect to depth, sea-floor relief, month of sighting, or sea-surface temperature. Long-finned pilot whales (Globicephala melas) were not randomly distributed with respect to month or sea-surface temperature. These species used the Gully slightly differently, although there was overlap. White-sided dolphins were seen only in the core of the canyon, but were sighted at all temperatures, depths, and sea-floor reliefs and throughout the summer field season. Common dolphins had a modest range throughout the deeper waters and were not seen in the summer before July, when the water warms. Pilot whales ranged widely over the study area, preferring areas with fairly flat relief and were more common later in the summer, when the waters were warmer. It appears that white-sided and common dolphins partition the Gully temporally but not geographically.

scholarly journals Influência dos Diferentes Tipos do Fenômeno El Niño na Precipitação da América do Sul

2021 ◽  
Vol 14 (2) ◽  
pp. 729
Author(s):  
Michelle Simões Reboita ◽  
Kelvem Rodrigo De Oliveira ◽  
Pedro Ygor Carvalho Corrêa ◽  
Renan Rodrigues
Keyword(s):  
South America ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
El Niño ◽  
El Nino ◽  
Sea Surface ◽  
Temperature Anomalies ◽  
The North ◽  
Different Types ◽  
Sea Surface Temperature Anomalies

Nesse estudo foi aplicada uma metodologia de classificação dos eventos de El Niño em seus diferentes tipos (Central, Leste e, quando ambos ocorrem concomitantemente, MIX) no período de janeiro de 1950 a março de 2019. Além disso, os tipos de El Niño foram separados por estação do ano e considerando as diferentes condições de anomalias de temperatura da superfície do mar no oceano Atlântico Tropical Sul (neutras quando ocorrem anomalias de temperatura entre -0,5º e 0,5ºC; quentes quando as anomalias são superiores a 0,5ºC e frias quando as anomalias são inferiores a -0,5ºC). Com base nas combinações de ocorrência de cada tipo de EN e anomalias de temperatura da superfície do mar no Atlântico Tropical Sul, foram determinadas as anomalias de precipitação na América do Sul. Os diferentes tipos de El Niño são mais frequentes quando há condições neutras no Atlântico Tropical Sul. Com relação às anomalias de precipitação na América do Sul, os eventos de El Niño Leste e MIX, em geral, mostram padrão similar na distribuição espacial das anomalias, mas com os eventos MIX mostrando sinal mais fraco. As anomalias de temperatura da superfície do mar no Atlântico Tropical Sul quando negativas ajudam a fortalecer as condições secas entre o norte das regiões norte e nordeste do Brasil propiciadas pelos eventos de El Niño.  Influence of the Different Types of El Niño in the Precipitation over South America  A B S T R A C TIn this study, a specific methodology was applied to classify El Niño events into their different types (Central, East and when both occur at the same time, MIX) from January 1950 to March 2019. In addition, the types of El Niño were separated by season and considering the conditions of sea surface temperature anomalies on the South Tropical Atlantic Ocean (neutrality: temperature anomalies between -0.5º and 0.5ºC, warm: anomalies above 0.5ºC and cold:  anomalies below -0.5ºC). Based on in the combination of different types of El Niño and sea surface temperature anomalies on the South Atlantic Tropical Ocean, precipitation anomalies over South America were computed. The different types El Niño occur, in general, under neutral conditions on the Atlantic Ocean. The events of El Niño - East and MIX, in general, present a similar pattern in the spatial distribution of the precipitation anomalies over South America, but with the MIX events showing weaker signal. Sea surface temperature anomalies in the Tropical South Atlantic when negative, they help to strengthen the dry conditions between the north of the north and northeast regions of Brazil caused by the El Niño events.Keywords: atmospheric circulation, anomaly conditions, tropical oceans, climate

Understanding Madden-Julian-Induced sea surface temperature variations in the North Western Australian Basin

2012 ◽  
Vol 41 (11-12) ◽  
pp. 3203-3218 ◽  
Author(s):  
J. Vialard ◽  
K. Drushka ◽  
H. Bellenger ◽  
M. Lengaigne ◽  
S. Pous ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Sea Surface ◽  
Temperature Variations ◽  
The North ◽  
Western Australian ◽  
North Western
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