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Impact of "the Blob" 2014 and 2019 in the sea surface temperature and chlorophyll-a levels of the Gulf of California: a satellite-based study

dc.contributoren-US
dc.creatorDurán-Campos, Elizabeth
dc.creatorCoria-Monter, Erik
dc.creatorMonreal-Gómez, María Adela
dc.creatorSalas-de-León, David Alberto
dc.date2022-07-04
dc.date.accessioned2022-07-06T15:31:51Z
dc.date.available2022-07-06T15:31:51Z
dc.identifierhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol50-issue3-fulltext-2910
dc.identifier10.3856/vol50-issue3-fulltext-2910
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/193840
dc.descriptionIn 2014, an unexpected and unusual warm patch of ocean water was discovered in the northeast Pacific Ocean (PO) that moved south, reaching the Mexican coasts; this patch, returning in 2019, was nicknamed "the Blob". This paper aimed to assess the impacts of this phenomenon on the sea surface temperature (SST) and chlorophyll-a (CHLA) levels in the Gulf of California (GC), a high-productivity region. Daily satellite images of SST and CHLA with a spatial resolution of 1 km/pixel were obtained for 2014, 2017, and 2019 from the Moderate Resolution Imaging Spectroradiometer (MODIS). Two disc-shaped areas of around 25 km in diameter were selected in the southern portion of the GC to assess the variability of both parameters quantitatively. An additional site was selected in the PO for comparison and, thus, to better characterize and have a complete vision of these events. The results showed that in the PO, during the periods in which the Blob occurred, the SST values were higher concerning the neutral year (2017), and the levels of CHLA were very low (barely 0.15 mg m-3). Within the GC, the results showed the presence of a strong seasonal variability, with maximum values of SST (>30°C) and the lowest concentrations of CHLA (<2 mg m-3) during the summer, with maximum concentrations of CHLA (~10 mg m-3) observed during the winter months. Contrary to expectations, no dramatic changes in SST and CHLA were observed during the years impacted by the Blob. This apparent absence of negative impacts could be related to different mechanisms in the gulf that "protect" to avoid climate disruptions. The presence of complex geomorphology and hydrodynamic processes at different scales induce mixing and fertilizing of the euphotic layer. Could these factors protect the southern gulf from the negative impacts of the Blob?en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol50-issue3-fulltext-2910/1581
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue3-fulltext-2910/2325
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue3-fulltext-2910/2326
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue3-fulltext-2910/2327
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue3-fulltext-2910/2328
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue3-fulltext-2910/2329
dc.rightsCopyright (c) 2022 Latin American Journal of Aquatic Researchen-US
dc.sourceLatin American Journal of Aquatic Research; Vol 50, No 3 (2022); 479-491en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 50, No 3 (2022); 479-491es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectthe Blob; chlorophyll-a; sea surface temperature; Gulf of Californiaen-US
dc.titleImpact of "the Blob" 2014 and 2019 in the sea surface temperature and chlorophyll-a levels of the Gulf of California: a satellite-based studyen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


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