Articles | Volume 18, issue 11
https://doi.org/10.5194/essd-18-8167-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-8167-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Climatology of the sea temperature from long-term in situ observations: Northern Chilean Patagonia
GeoHydrodynamics and Environment Research, University of Liège, Liège, Belgium
Alexander Barth
GeoHydrodynamics and Environment Research, University of Liège, Liège, Belgium
Iván Pérez-Santos
Centro de investigación i˜mar, Universidad de Los Lagos, Puerto Montt, Chile
Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental COPAS COASTAL, Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile
Pamela Linford
Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental COPAS COASTAL, Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile
Aida Alvera-Azcárate
GeoHydrodynamics and Environment Research, University of Liège, Liège, Belgium
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Marine heatwaves and cold spells are periods of extreme sea temperatures. This study focuses on Chilean Northern Patagonia, a fjord region vulnerable due to its aquaculture. It aims to understand these events' distribution and identify the most affected basins. Results show higher intensity in enclosed areas like Reloncaví Sound and Puyuhuapi Fjord. Marine heatwaves are becoming more frequent over time, while cold spells are decreasing.
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Alexander Barth, Aida Alvera-Azcárate, Charles Troupin, and Jean-Marie Beckers
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Earth-observing satellites provide routine measurement of several ocean parameters. However, these datasets have a significant amount of missing data due to the presence of clouds or other limitations of the employed sensors. This paper describes a method to infer the value of the missing satellite data based on a convolutional autoencoder (a specific type of neural network architecture). The technique also provides a reliable error estimate of the interpolated value.
Malek Belgacem, Katrin Schroeder, Alexander Barth, Charles Troupin, Bruno Pavoni, Patrick Raimbault, Nicole Garcia, Mireno Borghini, and Jacopo Chiggiato
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The Mediterranean Sea exhibits an anti-estuarine circulation, responsible for its low productivity. Understanding this peculiar character is still a challenge since there is no exact quantification of nutrient sinks and sources. Because nutrient in situ observations are generally infrequent and scattered in space and time, climatological mapping is often applied to sparse data in order to understand the biogeochemical state of the ocean. The dataset presented here partly addresses these issues.
Estrella Olmedo, Verónica González-Gambau, Antonio Turiel, Cristina González-Haro, Aina García-Espriu, Marilaure Gregoire, Aida Álvera-Azcárate, Luminita Buga, and Marie-Hélène Rio
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2021-364, https://doi.org/10.5194/essd-2021-364, 2021
Revised manuscript not accepted
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We present the first dedicated satellite salinity product in the Black Sea. We use the measurements provided by the European Soil Moisture and Ocean Salinity mission. We introduce enhanced algorithms for dealing with the contamination produced by the Radio Frequency Interferences that strongly affect this basin. We also provide a complete quality assessment of the new product and give an estimated accuracy of it.
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Short summary
In this study, we present the first high-resolution, four-dimensional temperature climatology for Northern Chilean Patagonia, a region characterised by a complex network of fjords and channels. The climatology is based on approximately three million in situ observations collected over the past 75 years and interpolated into continuous temperature fields with a horizontal resolution of about 900 m and 32 vertical levels, providing monthly and daily fields from the surface to 400 m depth.
In this study, we present the first high-resolution, four-dimensional temperature climatology...
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