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Browsing by Author "Rouault, Marjolaine J"

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Agulhas Current variability determined from space: a multi-sensor approach

Author: Rouault, Marjolaine J Date: Nov 2011 Satellite remote sensing datasets including more than 6 years of high frequency Sea Surface Temperature (SST) imagery as well as surface current observations derived from 18 years of merged-altimetry and over 2 years of Advanced Synthetic ... Read more
Climate change is catchy – but when will it really hurt?

Author: Sweijd, ML ; Wright, CY ; Westwood, A ; Rouault, Marjolaine J ; Landman, WA ; MacKenzie, ML ; Nuttall, JJC ; Mahomed, H ; Cousins, T ; Winter, K ; Berhoozi, F ; Kalule, B ; Kruger, P ; Govender, T ; Minakawa, N Date: Dec 2015 Concern and general awareness about the impacts of climate change in all sectors of the social-ecological-economic system is growing as a result of improved climate science products and information, as well as increased media coverage of the ... Read more
Mapping the Agulhas Current from space: an assessment of ASAR surface current velocities

Author: Rouault, Marjolaine J ; Mouche, A ; Collard, F ; Johannessen, JA ; Chapron, B Date: Oct 2010 Over 2 years of surface current information collected in the Agulhas Current region and derived from the Doppler centroid anomalies of Envisat’s advanced synthetic aperture radar (ASAR) are examined. The sources of errors and potential use ... Read more
Measuring surface current velocities in the Agulhas region with ASAR

Author: Rouault, Marjolaine J ; Mouche, A ; Collard, F ; Johannessen, JA ; Chapron, B Date: Jan 2010 Surface current information collected over the Agulhas Current region and derived from the Doppler centroid anomalies of the Advanced Synthetic Aperture Radar (ASAR) are examined. The sources of errors and potential use of the radar surface ... Read more
New perspectives on Natal Pulses from satellite observations

Author: Rouault, Marjolaine J ; Penven, P Date: Jul 2011 More than 6 years of high-frequency sea surface temperature (SST) imagery are used to follow perturbations at the inshore front of the Agulhas Current, between the northern Natal Bight and Port Elizabeth. Selected case studies as well as a ... Read more
Observations of an early Agulhas current retroflection event in 2001: a temporary cessation of inter-ocean exchange south of Africa?

Author: Van Aken, HM ; Lutjeharms, JRE ; Rouault, Marjolaine J ; Whittle, C ; De Ruijter, WPM Date: Feb 2013 The exchange of heat and salt between the South Indian Ocean and South Atlantic Ocean, at the southern terminus of the Agulhas current, forms a crucial link in the global ocean circulation. It has been surmised that upstream retroflections ... Read more
Preliminary inter-model comparison of the Agulhas current with direct range doppler velocity estimates from Envisat's Advanced Synthetic Aperture Radar (ASAR)

Author: Backeberg, Bjorn-Christoph ; Johannessen, J ; Rouault, Marjolaine J ; Veitch, J Date: Jul 2010 The greater Agulhas Current is a highly dynamic regime that is known to have significant influence on the local marine environment and ecosystem. It is also recently recognized to play an important role in the global thermohaline circulation, ... Read more
Recurrent daily rainfall patterns over South Africa and associated dynamics during the core of the austral summer

Author: Cretat, J ; Richard, Y ; Pohl, B ; Rouault, Marjolaine J ; Reason, C ; Fauchereau, N Date: Dec 2010 This paper investigates the influence of some modes of climate variability on the spatio-temporal rainfall variability over South Africa during the core of the rainy season, December to February (DJF). All analyses are based directly on the ... Read more
Relationships between the Antarctic oscillation, the Madden-Julian oscillation, and ENSO, and consequences for rainfall analysis

Author: Pohl, B ; Fauchereau, N ; Reason, CJC ; Rouault, Marjolaine J Date: Jan 2010 The Antarctic Oscillation (AAO) is the leading mode of atmospheric variability in the Southern Hemisphere mid- and high latitudes (south of 20°S). In this paper, the authors examine its statistical relationships with the major tropical climate ... Read more
Synthetic aperture radar products for the African marine environment

Author: Rouault, Marjolaine J ; Johannessen, J ; Collard, F ; Bernard, Stewart Date: Apr 2011 Synthetic Aperture Radar for Africa (SAR-Africa) is an initiative which aims to develop African capacity for the processing of satellite SAR products to pursue oceanographic research and promote operational applications. The validation of SAR ... Read more
Wind changes above warm Agulhas Current eddies

Author: Rouault, Marjolaine J ; Verley, P ; Backeberg, Bjorn-Christoph Date: 2016 Sea surface temperature (SST) estimated from the Advanced Microwave Scanning Radiometer E onboard the Aqua satellite and altimetry-derived sea level anomalies are used south of the Agulhas Current to identify warm-core mesoscale eddies ... Read more

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Browsing by Author "Rouault, Marjolaine J"

Browsing by Author "Rouault, Marjolaine J"

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All of ResearchSpace

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