Ekman modulation of the sea-surface temperature on the Eastern South Pacific

Soto-Mardones, Luis; Parés‐Sierra, Alejandro; Durazo, Reginaldo

doi:10.1016/j.dsr2.2003.06.006

Cited by 8 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To show this, the features of the SST from the selected strong‐forcing and weak‐forcing jet periods are presented in Figure . The SST decreases relative to its mean during the strong‐forcing jet period and increases during the weak‐forcing jet period, as also noted by others [ Soto‐Mardones et al ., ; Albert et al ., ]. The warm SST near the coastline curvature between Chile and Peru is due to the weak meridional winds that are unable to produce upwelling [ Soto‐Mardones et al ., ].…”

Section: Sst Responses During the Strong‐forcing And Weak‐forcing Jetmentioning

confidence: 98%

“…Four major processes, Ekman pumping, horizontal advection, vertical entrainment, and net surface heat flux exchange have various impacts on the SST change over the SEP area according to the previous studies [ Halpern , ; Soto‐Mardones et al ., ; Renault et al ., ; Albert et al ., 2010]. The Ekman pumping due to divergence and convergence of the Ekman transport are responsible for the upwelling and downwelling processes affecting the SST change.…”

Section: Important Processes Affecting Sst Modulationmentioning

confidence: 98%

“…The SST decreases relative to its mean during the strong‐forcing jet period and increases during the weak‐forcing jet period, as also noted by others [ Soto‐Mardones et al ., ; Albert et al ., ]. The warm SST near the coastline curvature between Chile and Peru is due to the weak meridional winds that are unable to produce upwelling [ Soto‐Mardones et al ., ]. The largest decrease of SST is located along the coast of central Chile and the cooler water extends offshore to replace the warm water (Figures a–c).…”

Section: Sst Responses During the Strong‐forcing And Weak‐forcing Jetmentioning

confidence: 99%

“…The depth of the Ekman layer H ek can be obtained as in Soto‐Mardones et al . []

H_{e k} = κ \frac{u_{*}}{f},

where von Kármán's constant

κ

is taken to be equal to 0.42 [ Ruggles , 1970]. The friction velocity u * is output from the coupled model.…”

Section: Important Processes Affecting Sst Modulationmentioning

confidence: 99%

See 3 more Smart Citations

Modulation of the sea‐surface temperature in the Southeast Pacific by the atmospheric low‐level coastal jet

et al. 2013

View full text Add to dashboard Cite

[1] The atmospheric low-level coastal jet (LLCJ) in the Southeast Pacific (SEP) region is characterized as either a strong-forcing jet (colder and drier air) or weak-forcing jet (warm and moist) based on the location of the Southeast Pacific high-pressure system (SEPH). The sea-surface temperature (SST) changes corresponding to a particularly strong-forcing jet (29-30 October) and weak-forcing jet (22-23 November) are investigated in this study using the two-way air-ocean coupled model COAMPSV R and satellite observation data. Results indicate that the coupled simulation reduces the overall absolute bias 50% for the surface wind speed, 70% for the cloud liquid water path, and 15% for SST as compared to the uncoupled simulation. The coupled simulation reduces excessive SST cooling, especially during the strong-forcing jet period along the coastal area where offshore transport of upwelled cold water is too strong from the uncoupled simulation. The coupled simulation also reduces the excessive warming from the uncoupled simulation by providing better cloud coverage. The prominent mechanisms in cooling SST along the coast are the same for both the strong-forcing and weak-forcing jets, namely vigorous upwelling and horizontal advection. However, the mechanisms along the jet path differ from along the coast, with air-sea heat exchange the most important process, resulting in cooling SST during the strong-forcing jet period but warming SST during the weak-forcing jet period. The advances and differences of the present study as compared with previous studies are discussed in detail in the paper.

show abstract

Section: Sst Responses During the Strong‐forcing And Weak‐forcing Jetmentioning

confidence: 98%

Section: Important Processes Affecting Sst Modulationmentioning

confidence: 98%

Section: Sst Responses During the Strong‐forcing And Weak‐forcing Jetmentioning

confidence: 99%

“…The depth of the Ekman layer H ek can be obtained as in Soto‐Mardones et al . []

H_{e k} = κ \frac{u_{*}}{f},

where von Kármán's constant

κ

is taken to be equal to 0.42 [ Ruggles , 1970]. The friction velocity u * is output from the coupled model.…”

Section: Important Processes Affecting Sst Modulationmentioning

confidence: 99%

See 2 more Smart Citations

Modulation of the sea‐surface temperature in the Southeast Pacific by the atmospheric low‐level coastal jet

et al. 2013

View full text Add to dashboard Cite

show abstract

“…4(f)). Therefore, the role of the Ekman transport over the Eastern Boundary Current Peru/Chile tends to cool the mixed layer (SST) (Croquette et al 2007;Soto-Mardones et al 2004;Takahashi 2005) and on average leads to higher upwelling than Ekman pumping (Croquette et al 2007). Further south, warming of SST is only evident during spring-summer but with less intensity than Q net + Q pen (Fig.…”

Section: Q Net + Q Pen Comparison With Sst Tendencymentioning

confidence: 99%