Oscar Pizarro
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Oscar Pizarro has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Carmen E. Morales
Instituto Milenio de Oceanografía Universidad de Concepción Concepción Chile
1 shared publication - Joaquim Pereira Bento
Escuela de Ciencias del Mar Pontificia Universidad Católica de Valparaíso Valparaíso Chile
1 shared publication - Samuel Hormazabal
Departamento de Geofisica Universidad de Concepción Concepción Chile
1 shared publication - Vera Oerder
Millennium Institute of Oceanography (IMO), University of Concepcion, P.O. Box 1313, Concepción-3, Concepción 4030000, Chile
1 shared publication
Latest Publications
- Open Access
- 30 April 2018
- Published by MDPI AG in Remote Sensing
- Vol. 10 (5) , 690
Coastal Upwelling Front Detection off Central Chile (36.5–37°S) and Spatio-Temporal Variability of Frontal Characteristics
In Eastern Boundary Upwelling Systems, cold coastal waters are separated from offshore by a strong cross-shore Sea Surface Temperature (SST) gradient zone. This upwelling front plays a major role for the coastal ecosystem. This paper proposes a method to automatically identify the front and define its main characteristics (position, width, and intensity) from high resolution data. The spatio-temporal variability of the front characteristics is then analyzed in a region off Central Chile (37°S), from 2003 to 2016. The front is defined on daily 1 km-resolution SST maps by isotherm T0 with T0 computed from mean SST with respect to the distance from the coast. The probability of detecting a front, as well as the front width and intensity are driven by coastal wind conditions and increased over the 2007–2016 period compared to the 2003–2006 period. The front position, highly variable, is related to the coastal jet configuration and does not depend on the atmospheric forcing. This study shows an increase by 14% in the probability of detecting a front and also an intensification by 17% of the cross-front SST difference over the last 14 years. No trend was found in the front position.
- 30 April 2018
- Published by MDPI AG in Remote Sensing
- Vol. 10 (5) , 690
Open AccessCoastal Upwelling Front Detection off Central Chile (36.5–37°S) and Spatio-Temporal Variability of Frontal Characteristics
In Eastern Boundary Upwelling Systems, cold coastal waters are separated from offshore by a strong cross-shore Sea Surface Temperature (SST) gradient zone. This upwelling front plays a major role for the coastal ecosystem. This paper proposes a method to automatically identify the front and define its main characteristics (position, width, and intensity) from high resolution data. The spatio-temporal variability of the front characteristics is then analyzed in a region off Central Chile (37°S), from 2003 to 2016. The front is defined on daily 1 km-resolution SST maps by isotherm T0 with T0 computed from mean SST with respect to the distance from the coast. The probability of detecting a front, as well as the front width and intensity are driven by coastal wind conditions and increased over the 2007–2016 period compared to the 2003–2006 period. The front position, highly variable, is related to the coastal jet configuration and does not depend on the atmospheric forcing. This study shows an increase by 14% in the probability of detecting a front and also an intensification by 17% of the cross-front SST difference over the last 14 years. No trend was found in the front position.