Intraseasonal variability of wind-forced coastal upwelling off central Chile (30°S)

Aeolian erosion and sand transport over the Mejillones Pampa in the coastal Atacama Desert of northern Chile

“…This last observation is in general agreement with typical conditions leading to coastal wind maxima and subsequent relaxation over north-central Chile (e.g. Rutllant et al, 1998;Garreaud et al, 2002;Rutllant et al, 2004). Other similar cycles with u* peaking on October 14, 19, 28, November 5, 12, and 17 can be seen in Fig.…”

Enhancement of coastal upwelling and interdecadal ENSO‐like variability in the Peru‐Chile Current since late 19th century

“…As an illustration of this mechanism at play, a consistent climatic jump of about +1 m s −1 in the mean coastal southerly wind velocity at 23°S, equivalent to a ca. +15 m 2 s −2 jump in the pseudo wind stress (a coastal upwelling index) [ Rutllant et al , 2004], started in 1976 at the onset of El Niño‐like conditions in the Pacific [ Zhang et al , 1997; Garreaud and Battisti , 1999] (Figures 4a and 4b). This sudden change was concomitant with a ca.…”

“…(a) Monthly mean of the PDO index. (b) Monthly surface pseudo‐stress data of the afternoon‐averaged alongshore winds used as representative of the daily upwelling‐index [ Rutllant et al , 2004]. (c) Monthly low‐cloud (stratocumulus) cover data.…”

Temporal fluctuations of nearshore ichthyoplankton off Valparaíso, central Chile, during the ENSO cycle 1997-2000

“…During transitional periods, the south eastern Pacific subtropical anticyclone moves, producing high wind variability associated with frontal disturbances and coastal lows (Rutllant et al 2004). The high variability in wind speed and direction may reduce the offshore advection of the surface Ekman layer, increasing the residence time of surface planktonic organisms near headlands in coastal areas (Palma et al 2006), where feeding success and growth of early life stages of fishes are high (Hernández-Miranda et al 2003, Landaeta & Castro 2006a.…”