12 Observing the Agulhas Current With Sea Surface Temperature . . .
247
One of the issues of satellite observations in western boundary currents is the lack
of match-up data to validate remote sensing algorithms. Short residence times in
western boundary currents imply that few observations are available from platforms
such as Argo floats which are typically used in match-up databases. In addition,
the Agulhas Current is a region which has historically been poorly sampled. In situ
observations across the Agulhas Current near East London (at 33
◦ S) are currently
being collected as part of the 3-year ACT program. The ACT measurement campaign
(van Sebille et al. 2010) will provide a much needed validation database for future
remote sensing studies in the Agulhas Current region.
References
Beal LM, de Ruijter WPM, Biastoch A, Zahn R (2011) On the role of the Agulhas system in ocean
circulation and climate. Nature 472(7344):429–436. doi:dx.doi.org/10.1038/nature 09983
Biastoch A, Reason CJC, Lutjeharms JRE, Boebel O (1999) The importance of flow in the
Mozambique channel to seasonality in the greater Agulhas current system. Geophys Res Lett
26(21):3321–3324. doi:dx.doi.org/10.1029/1999GL002349
Bryden HL, Beal LM, Duncan LM (2005) Structure and transport of the Agulhas current and its
temporal variability. J Oceanogr 61:479–492
Byrne DA, McClean JL (2008) Sea level anomaly signals in the Agulhas Current region. Geophys
Res Lett 35(13):L13601. doi:dx.doi.org/10.1029/2008GL034087
Casal TGD, Beal LM, Lumpkin R, Johns WE (2009) Structure and downstream evolution of the
Agulhas current system during a quasi-synoptic survey in february—march 2003. J Geophys
Res 114:C03001. doi:10.1029/2008JC004954
Casey KS, Brandon TB, Cornillon P, Evans R (2010) The past, present, and future of the AVHRR
pathfinder SST program. In: Barale V, Gower J, Alberotanza (eds) Oceanography from space:
revisited. Springer, pp 273–287. http://dx.doi.org/10.1007/978-90-481-8681-5_16
Chelton DB, Schlax MG, Samelson RM (2011) Global observations of nonlinear mesoscale eddies.
Progrogr Oceanogr 91(2):167–216. doi:10.1016/j.pocean.2011.01.002
Chelton DB, Walsh EJ, MacArthur JL (1989) Pulse compression and sea level tracking in satellite
altimetry. J Atmos Oceanic Technol 6:407–438
Collard F, Mouche A, Chapron B, Danilo C, Johannessen JA (2008) Routine high resolution observation of selected major surface currents from space. Proceedings of the Workshop SEASAR
2008, ESA SP-656
de Ruijter WPM, Ridderinkhof H, Lutjeharms JRE, Schouten MW, Veth C (2002) Observations of
the flow in the Mozambique channel. Geophys Res Lett 29:1401–1403
de Ruijter WPM, van Aken HM, Beier EJ, Lutjeharms JRE, Matano RP, Schouten MW (2004)
Eddies and dipoles around South Madagascar: formation, pathways and large-scale impact.
Deep-Sea Res Part I 51(3):383–400. doi:10.1016/j.dsr.2003.10.011
Dufois F, Penven P, Whittle C, Veitch, J (2012) On the warm nearshore bias in Pathfinder monthly
SST products over Eastern Boundary Upwelling Systems. Ocean Modelling, 47:13–118.
Emery WJ (2001) Estimating sea surface temperature from infrared satellite and in Situ temperature
data. B Am Meteorol Soc 82(12):2773–2786
Goschen WS, Schumann EH (1990) Agulhas current variability and inshore structures off the Cape
Province, South Africa. J Geophys Res 95:667–678
Gründlingh ML (1983) On the course of the Agulhas Current. S Afr Geogr J 65(1):49–57
Heidinger AK, Anne VR, Dean C (2002). Using MODIS to estimate cloud contamination of the
AVHRR data record. J Atmos Ocean Tech 19(5):586–601. doi:10.1175/1520–0426(2002)019
<0586:UMTECC>2.0.CO;2
247
One of the issues of satellite observations in western boundary currents is the lack
of match-up data to validate remote sensing algorithms. Short residence times in
western boundary currents imply that few observations are available from platforms
such as Argo floats which are typically used in match-up databases. In addition,
the Agulhas Current is a region which has historically been poorly sampled. In situ
observations across the Agulhas Current near East London (at 33
◦ S) are currently
being collected as part of the 3-year ACT program. The ACT measurement campaign
(van Sebille et al. 2010) will provide a much needed validation database for future
remote sensing studies in the Agulhas Current region.
References
Beal LM, de Ruijter WPM, Biastoch A, Zahn R (2011) On the role of the Agulhas system in ocean
circulation and climate. Nature 472(7344):429–436. doi:dx.doi.org/10.1038/nature 09983
Biastoch A, Reason CJC, Lutjeharms JRE, Boebel O (1999) The importance of flow in the
Mozambique channel to seasonality in the greater Agulhas current system. Geophys Res Lett
26(21):3321–3324. doi:dx.doi.org/10.1029/1999GL002349
Bryden HL, Beal LM, Duncan LM (2005) Structure and transport of the Agulhas current and its
temporal variability. J Oceanogr 61:479–492
Byrne DA, McClean JL (2008) Sea level anomaly signals in the Agulhas Current region. Geophys
Res Lett 35(13):L13601. doi:dx.doi.org/10.1029/2008GL034087
Casal TGD, Beal LM, Lumpkin R, Johns WE (2009) Structure and downstream evolution of the
Agulhas current system during a quasi-synoptic survey in february—march 2003. J Geophys
Res 114:C03001. doi:10.1029/2008JC004954
Casey KS, Brandon TB, Cornillon P, Evans R (2010) The past, present, and future of the AVHRR
pathfinder SST program. In: Barale V, Gower J, Alberotanza (eds) Oceanography from space:
revisited. Springer, pp 273–287. http://dx.doi.org/10.1007/978-90-481-8681-5_16
Chelton DB, Schlax MG, Samelson RM (2011) Global observations of nonlinear mesoscale eddies.
Progrogr Oceanogr 91(2):167–216. doi:10.1016/j.pocean.2011.01.002
Chelton DB, Walsh EJ, MacArthur JL (1989) Pulse compression and sea level tracking in satellite
altimetry. J Atmos Oceanic Technol 6:407–438
Collard F, Mouche A, Chapron B, Danilo C, Johannessen JA (2008) Routine high resolution observation of selected major surface currents from space. Proceedings of the Workshop SEASAR
2008, ESA SP-656
de Ruijter WPM, Ridderinkhof H, Lutjeharms JRE, Schouten MW, Veth C (2002) Observations of
the flow in the Mozambique channel. Geophys Res Lett 29:1401–1403
de Ruijter WPM, van Aken HM, Beier EJ, Lutjeharms JRE, Matano RP, Schouten MW (2004)
Eddies and dipoles around South Madagascar: formation, pathways and large-scale impact.
Deep-Sea Res Part I 51(3):383–400. doi:10.1016/j.dsr.2003.10.011
Dufois F, Penven P, Whittle C, Veitch, J (2012) On the warm nearshore bias in Pathfinder monthly
SST products over Eastern Boundary Upwelling Systems. Ocean Modelling, 47:13–118.
Emery WJ (2001) Estimating sea surface temperature from infrared satellite and in Situ temperature
data. B Am Meteorol Soc 82(12):2773–2786
Goschen WS, Schumann EH (1990) Agulhas current variability and inshore structures off the Cape
Province, South Africa. J Geophys Res 95:667–678
Gründlingh ML (1983) On the course of the Agulhas Current. S Afr Geogr J 65(1):49–57
Heidinger AK, Anne VR, Dean C (2002). Using MODIS to estimate cloud contamination of the
AVHRR data record. J Atmos Ocean Tech 19(5):586–601. doi:10.1175/1520–0426(2002)019
<0586:UMTECC>2.0.CO;2