Coastal warming and wind-driven upwelling: A global analysis

Varela, R.; Lima, Fernando P.; Seabra, Rui; Meneghesso, Claudia; Gómez‐Gesteira, M.

doi:10.1016/j.scitotenv.2018.05.273

Cited by 73 publications

(73 citation statements)

References 70 publications

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“…In addition to enhancing coastal fisheries (FAO 2018), coastal upwelling is expected to buffer the effects of global warming in nearshore environments (Varela et al 2018). In a recent book evaluating upwelling systems around the world (Kämpf & Chapman 2016), the system that is the focus of the present study was not included.…”

Section: Discussionmentioning

confidence: 99%

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Coastal upwelling in Atlantic Canada [full paper published in Oceanological and Hydrobiological Studies, 49 (1): 81-87, 2020]

Scrosati¹,

Ellrich²

2018

Preprint

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The most studied upwelling systems occur on eastern ocean boundary coasts. We hereby focus on a western ocean boundary coast upwelling system located in Atlantic Canada. Using daily in-situ data on sea surface temperature (SST), we demonstrate a marked contrast in cooling between July 2014 (pronounced) and July 2015 (weak) for two locations ca. 110 km apart on the southeastern coast of Nova Scotia. Southwesterly winds blow parallel to this coast. In July 2014, such winds were common and their daily duration was negatively related to coastal SST. In July 2015, however, such winds were considerably less prevalent and unrelated to SST. These results are consistent with a marked interannual contrast in wind-driven upwelling. Independent measures of an upwelling index confirm this view, as the index was largely positive (indicative of upwelling) during July 2014 but, albeit generally positive, often lower, and sometimes even negative (indicative of downwelling), during July 2015. Both studied periods also experienced considerable differences in climatic phenomena such as the El Niño Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO). In July 2015, a strong El Niño event co-occurred with a negative NAO index, while both phenomena exhibited near-zero indices in July 2014. Influences of these phenomena on coastal winds and upwelling are known for other regions. Thus, given the relationships hereby reported for Atlantic Canada and the oceanographic and ecological importance of upwelling, it would be profitable to further investigate the nature and extent of atmospheric–oceanic links on this western ocean boundary coast.

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Section: Discussionmentioning

confidence: 99%

“…Coastal upwelling also occurs on western ocean boundaries (Kämpf & Chapman 2016;Varela et al 2018). As less information is available for these systems, more research is necessary to improve our global understanding of upwelling.…”

Section: Introductionmentioning

confidence: 99%

Coastal upwelling in Atlantic Canada [full paper published in Oceanological and Hydrobiological Studies, 49 (1): 81-87, 2020]

Scrosati¹,

Ellrich²

2018

Preprint

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“…The intensity of the physical (ground water discharges [3], tidal mixing [4], upwelling phenomena [5]), chemical (water quality [6], thermal plume contamination [7], ocean acidification [8], eutrophication [9]), and biological interactions (overfishing [10], habitat loss [11], and reconfiguration of communities [12]) between the coastal zone and the terrestrial environment, both from natural and anthropogenic processes, dictates the necessity of monitoring the coastal ocean. Climate change has the potential to exacerbate other anthropogenic effects on coastal waters and the recent change in sea temperature is considered as the most pervasive and severe cause of impact in coastal ecosystems worldwide [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of Autonomous In Situ Temperature Loggers in a Coastal Region of the Eastern Mediterranean Sea for Use in the Validation of Near-Shore Satellite Sea Surface Temperature Measurements

et al. 2020

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The coastal ocean is one of the most important environments on our planet, home to some of the most bio-diverse and productive ecosystems and providing key input to the livelihood of the majority of human society. It is also a highly dynamic and sensitive environment, particularly susceptible to damage from anthropogenic influences such as pollution and over-exploitation as well as the effects of climate change. These have the added potential to exacerbate other anthropogenic effects and the recent change in sea temperature can be considered as the most pervasive and severe cause of impact in coastal ecosystems worldwide. In addition to open ocean measurements, satellite observations of sea surface temperature (SST) have the potential to provide accurate synoptic coverage of this essential climate variable for the near-shore coastal ocean. However, this potential has not been fully realized, mainly because of a lack of reliable in situ validation data, and the contamination of near-shore measurements by the land. The underwater biotechnological park of Crete (UBPC) has been taking near surface temperature readings autonomously since 2014. Therefore, this study investigated the potential for this infrastructure to be used to validate SST measurements of the near-shore coastal ocean. A comparison between in situ data and Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua and Terra SST data is presented for a four year (2014–2018) in situ time series recorded from the UBPC. For matchups between in situ and satellite SST data, only nighttime in situ extrapolated to the sea surface (SSTskin) data within ±1 h from the satellite’s overpass are selected and averaged. A close correlation between the in situ data and the MODIS SST was found (squared Pearson correlation coefficient-r2 > 0.9689, mean absolute error-Δ < 0.51 both for Aqua and Terra products). Moreover, close correlation was found between the satellite data and their adjacent satellite pixel’s data further from the shore (r2 > 0.9945, Δ < 0.23 for both Aqua and Terra products, daytime and nighttime satellite SST). However, there was also a consistent positive systematic difference in the satellite against satellite mean biases indicating a thermal adjacency effect from the land (e.g., mean bias between daytime Aqua satellite SST from the UBPC cell minus the respective adjacent cell’s data is δ = 0.02). Nevertheless, if improvements are made in the in situ sensors and their calibration and uncertainty evaluation, these initial results indicate that near-shore autonomous coastal underwater temperature arrays, such as the one at UBPC, could in the future provide valuable in situ data for the validation of satellite coastal SST measurements.

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“…The first is that given the tolerance of O. briareus embryos to high temperatures (unpublished data) and the climatic changes that have occurred in the area, the species has expanded its distribution because environmental conditions have been favorable. This distribution expansion may have been induced by SST anomalies in the Caribbean, which have been of greater intensity in recent years (Foltz et al 2018, Varela et al 2018, Jury 2019. The geographical expansion of various cephalopod species around the world has been documented, with changes in SST being suggested as possible causes (Table 1).…”

mentioning

confidence: 99%

“…La primera es que debido a la tolerancia de los embriones de O. briareus a las altas temperaturas (datos no publicados) y a los cambios climáticos que se han producido en el área, la especie ha ampliado su distribución porque las condiciones ambientales le han sido favorables. Esta expansión de distribución pudo haber sido inducida por anomalías de la TSM en el Caribe, que se han presentado con mayor intensidad en los últimos años (Foltz et al 2018, Varela et al 2018, Jury 2019. Se ha documentado la expansión geográfica de varias especies de cefalópodos en todo el mundo, y los cambios en la TSM han sido sugeridos como posibles causas (Tabla 1).…”

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Expansion of the geographical distribution of the Caribbean reef octopus (Octopus briareus) to the Gulf of Mexico

et al. 2020

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An Octopus briareus specimen was recorded off Port Sisal, Yucatán, Mexico. This finding represents the first record of O. briareus in the southern Gulf of Mexico, expanding the currently known westernmost distribution area for this species on the American continent. The specimen was captured by scientific divers performing routine maintenance at underwater facilities in the area of the discovery. The collected specimen was an adult female weighing 25.3 g. The presence of O. briareus could be related to changes in the environmental conditions in the Caribbean Sea and the Gulf of Mexico.

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Coastal warming and wind-driven upwelling: A global analysis

Cited by 73 publications

References 70 publications

Coastal upwelling in Atlantic Canada [full paper published in Oceanological and Hydrobiological Studies, 49 (1): 81-87, 2020]

Coastal upwelling in Atlantic Canada [full paper published in Oceanological and Hydrobiological Studies, 49 (1): 81-87, 2020]

An Evaluation of Autonomous In Situ Temperature Loggers in a Coastal Region of the Eastern Mediterranean Sea for Use in the Validation of Near-Shore Satellite Sea Surface Temperature Measurements

Expansion of the geographical distribution of the Caribbean reef octopus (Octopus briareus) to the Gulf of Mexico

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