Influence of ENSO and the South Atlantic Ocean on climate predictability over Southeastern South America

2009 ◽  
Vol 35 (7-8) ◽  
pp. 1493-1508 ◽  
Author(s):  
Marcelo Barreiro
Keyword(s):  
South America ◽  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
The South ◽  
Climate Predictability

Assessing levels of POPs in air over the South Atlantic Ocean off the coast of South America

2016 ◽  
Vol 571 ◽  
pp. 172-177 ◽  
Author(s):  
César N. Pegoraro ◽  
Tom Harner ◽  
Ky Su ◽  
Malisa S. Chiappero
Keyword(s):  
South America ◽  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
The South

scholarly journals Modulation of Midtropospheric CO2 by the South Atlantic Walker Circulation*

2015 ◽  
Vol 72 (6) ◽  
pp. 2241-2247 ◽  
Author(s):  
Xun Jiang ◽  
Edward T. Olsen ◽  
Thomas S. Pagano ◽  
Hui Su ◽  
Yuk L. Yung
Keyword(s):  
South America ◽  
Atlantic Ocean ◽  
Large Scale ◽  
Climate Models ◽  
Walker Circulation ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Strong Impact ◽  
The South ◽  
Near Surface

Abstract Midtropospheric CO2 data from the Atmospheric Infrared Sounder (AIRS) are used in this study to explore the variability of CO2 over the South Atlantic Ocean. It was found that the area-averaged CO2 over the South Atlantic Ocean is less than that over South America by about 1 ppm during December–March. This CO2 contrast is due to the large-scale vertical circulation over this region. During December–March, there is sinking motion over the South Atlantic Ocean. The sinking motion brings high-altitude air with a slightly lower concentration of CO2 to the midtroposphere. Meanwhile, air rising over South America brings near-surface air with a higher concentration of CO2 to the midtroposphere. As a result, the AIRS midtropospheric CO2 concentration is lower over the South Atlantic Ocean than over South America during December–March. The detrended AIRS midtropospheric CO2 difference correlates well with the inverted and detrended 400-hPa vertical pressure velocity difference between the South Atlantic and South America. Results obtained from this study demonstrate the strong impact of large-scale circulation on the vertical distribution of CO2 in the free troposphere and suggest that midtropospheric CO2 measurements can be used as an innovative observational constraint on the simulation of large-scale circulations in climate models.

scholarly journals Migration and summer destinations of humpback whales (Megaptera novaeangliae) in the western South Atlantic Ocean

2020 ◽  
pp. 113-118
Author(s):  
Alexandre N. Zerbini ◽  
Artur Andriolo ◽  
Mads Peter Heide-Jorgensen ◽  
Sergio C. Moreira ◽  
Jose Luis Pizzorno ◽  
...  
Keyword(s):  
South America ◽  
Atlantic Ocean ◽  
Satellite Telemetry ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Humpback Whales ◽  
Telemetry Data ◽  
The South ◽  
The Antarctic ◽  
Feeding Grounds

Southern Hemisphere humpback whales (Megaptera novaeangliae) migrate from wintering grounds in tropical latitudes to feeding areas in the Antarctic Ocean. In 2003 and 2005, satellite transmitters were deployed on humpback whales on their wintering grounds off the eastern coast of South America (Breeding Stock A). Seven whales were tracked for a period of 16 to 205 days travelling between 902 and 7,258km. The tracks of these whales provided partial or full information on the migratory schedule, migration routes and location of the feeding ground in the Southern Oceans. Whales departed from the coast of Brazil from late October to late December between 20˚ and 25˚S and gradually moved away from the South American coast as they moved towards high latitudes. They followed a somewhat direct, linear path, with an approximate geographic heading of 170˚. Satellite telemetry data indicated that the migratory corridors are restricted to a relatively narrow (~500–800km) strip in the South Atlantic Ocean. Migration speed to the feeding grounds averaged 80.2km/day and lasted from 40–58 days. Four individuals arrived at the feeding ground located to the north of the South Sandwich Islands, where they were tracked up to 102 days. Movements in this area were erratic at a mean travelling speed of 22.3km/day. Satellite telemetry data indicate that the main feeding grounds for the population wintering off eastern South America lie between 22˚W and 33˚W and in the southern South Atlantic Ocean south of the Antarctic Convergence but north of 60˚S. This is only partially consistent with the currently proposed stock boundaries for this population on the feeding grounds.

scholarly journals Wind speed and mesoscale features drive net autotrophy in the South Atlantic Ocean

2021 ◽  
Vol 260 ◽  
pp. 112435
Author(s):  
Daniel Ford ◽  
Gavin H. Tilstone ◽  
Jamie D. Shutler ◽  
Vassilis Kitidis ◽  
Polina Lobanova ◽  
...  
Keyword(s):  
Wind Speed ◽  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
The South

scholarly journals The source of Benguela Niños in the South Atlantic Ocean

2003 ◽  
Vol 30 (10) ◽  
pp. n/a-n/a ◽  
Author(s):  
Pierre Florenchie ◽  
Johann R. E. Lutjeharms ◽  
C. J. C. Reason ◽  
S. Masson ◽  
M. Rouault
Keyword(s):  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
The South
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