Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models
After Bakun (1990) formulated his hypothesis of upwelling intensification caused by increasing global warming, contradictory results have been published on whether primary productivity is increasing or decreasing in Eastern Boundary Upwelling Ecosystems (EBUE). The present work is focused in compari...
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/24828 2023-05-15T17:36:33+02:00 Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models Gómez Letona, Markel Ramos, Antonio G. Aristegui, J. Coca Saenz De Albéniz, Josep #NODATA# 57197711316 56505656800 7006741572 7006816204 23051353 30350490 1955355 227201 WOS:Gomez-Letona, M WOS:Ramos, AG WOS:Coca, J WOS:Aristegui, J 2017-12-06T03:31:18Z application/pdf https://doi.org/10.3389/fmars.2017.00370 http://api.elsevier.com/content/abstract/scopus_id/85034108058 eng eng Frontiers in Marine Science 4 2296-7745 WoS doi:10.3389/fmars.2017.00370 85034108058 000457690600368 http://api.elsevier.com/content/abstract/scopus_id/85034108058 -;1340;-;2728 article number 370 1340;2728 Sí by-nc-nd info:eu-repo/semantics/openAccess CC-BY-NC-ND Frontiers in Marine Science [ISSN 2296-7745], v. 4 (article number 370) ar 2510 Oceanografía 250616 Teledetección (Geología) Canary current EBUE Upwelling Primary production model Chl-a Decadal trends Climate indices Climate-Change California Current Northwest Africa Eastern Boundary Chlorophyll Temperature info:eu-repo/semantics/article Article 2017 ftunivlaspalmas https://doi.org/10.3389/fmars.2017.00370 2021-02-03T00:10:15Z After Bakun (1990) formulated his hypothesis of upwelling intensification caused by increasing global warming, contradictory results have been published on whether primary productivity is increasing or decreasing in Eastern Boundary Upwelling Ecosystems (EBUE). The present work is focused in comparing three net primary production (NPP) models—the VGPM (Vertically Generalized Production Model), the Eppley-VGPM and the CbPM (Carbon-based Production Model)—in the Canary Current (CanC) EBUE during the 1998–2015 period, making use of both SeaWiFS (Sea-viewing Wide Field-of-view Sensor) and MODIS (MODerate-resolution Imaging Spectroradiometer) derived data. We looked for the first time for seasonal to interannual trends of NPP under a regional perspective, with the aim of searching for temporal patterns that could support or reject the intensification hypothesis. According to previous studies based on the seasonality of the upwelling regime, the CanC EBUE was divided into three subregions: a seasonal upwelling zone (SUZ; 13–20°N), a permanent upwelling zone (PUZ; 20–26°N) and a weak permanent upwelling zone (WPUZ; 26–33°N). Although differences in the output of the models are important, both at regional and subregional scales, our analyses do not show significant increasing trends in NPP with any of the productivity models used. Our results are in accordance with previous published studies that indicate, that unlike other EBUE, winds have weakened (or at least not intensified) in the CanC upwelling over time scales ranging up to 60 years. Nevertheless, the comparison made in this work shows disagreements between some of the best-known NPP models and calls for a validation effort in this region. Seasonal to decadal anomalies of NPP and sea-surface temperature (SST) are estimated and analyzed in relation to selected climate indices, yielding only significant correlations between SST and the North Atlantic Oscillation (NAO) indices. 18 Article in Journal/Newspaper North Atlantic North Atlantic oscillation Universidad de Las Palmas de Gran Canaria: Acceda Frontiers in Marine Science 4 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
2510 Oceanografía 250616 Teledetección (Geología) Canary current EBUE Upwelling Primary production model Chl-a Decadal trends Climate indices Climate-Change California Current Northwest Africa Eastern Boundary Chlorophyll Temperature |
spellingShingle |
2510 Oceanografía 250616 Teledetección (Geología) Canary current EBUE Upwelling Primary production model Chl-a Decadal trends Climate indices Climate-Change California Current Northwest Africa Eastern Boundary Chlorophyll Temperature Gómez Letona, Markel Ramos, Antonio G. Aristegui, J. Coca Saenz De Albéniz, Josep Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models |
topic_facet |
2510 Oceanografía 250616 Teledetección (Geología) Canary current EBUE Upwelling Primary production model Chl-a Decadal trends Climate indices Climate-Change California Current Northwest Africa Eastern Boundary Chlorophyll Temperature |
description |
After Bakun (1990) formulated his hypothesis of upwelling intensification caused by increasing global warming, contradictory results have been published on whether primary productivity is increasing or decreasing in Eastern Boundary Upwelling Ecosystems (EBUE). The present work is focused in comparing three net primary production (NPP) models—the VGPM (Vertically Generalized Production Model), the Eppley-VGPM and the CbPM (Carbon-based Production Model)—in the Canary Current (CanC) EBUE during the 1998–2015 period, making use of both SeaWiFS (Sea-viewing Wide Field-of-view Sensor) and MODIS (MODerate-resolution Imaging Spectroradiometer) derived data. We looked for the first time for seasonal to interannual trends of NPP under a regional perspective, with the aim of searching for temporal patterns that could support or reject the intensification hypothesis. According to previous studies based on the seasonality of the upwelling regime, the CanC EBUE was divided into three subregions: a seasonal upwelling zone (SUZ; 13–20°N), a permanent upwelling zone (PUZ; 20–26°N) and a weak permanent upwelling zone (WPUZ; 26–33°N). Although differences in the output of the models are important, both at regional and subregional scales, our analyses do not show significant increasing trends in NPP with any of the productivity models used. Our results are in accordance with previous published studies that indicate, that unlike other EBUE, winds have weakened (or at least not intensified) in the CanC upwelling over time scales ranging up to 60 years. Nevertheless, the comparison made in this work shows disagreements between some of the best-known NPP models and calls for a validation effort in this region. Seasonal to decadal anomalies of NPP and sea-surface temperature (SST) are estimated and analyzed in relation to selected climate indices, yielding only significant correlations between SST and the North Atlantic Oscillation (NAO) indices. 18 |
author2 |
#NODATA# 57197711316 56505656800 7006741572 7006816204 23051353 30350490 1955355 227201 WOS:Gomez-Letona, M WOS:Ramos, AG WOS:Coca, J WOS:Aristegui, J |
format |
Article in Journal/Newspaper |
author |
Gómez Letona, Markel Ramos, Antonio G. Aristegui, J. Coca Saenz De Albéniz, Josep |
author_facet |
Gómez Letona, Markel Ramos, Antonio G. Aristegui, J. Coca Saenz De Albéniz, Josep |
author_sort |
Gómez Letona, Markel |
title |
Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models |
title_short |
Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models |
title_full |
Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models |
title_fullStr |
Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models |
title_full_unstemmed |
Trends in primary production in the canary current upwelling system-A regional perspective comparing remote sensing models |
title_sort |
trends in primary production in the canary current upwelling system-a regional perspective comparing remote sensing models |
publishDate |
2017 |
url |
https://doi.org/10.3389/fmars.2017.00370 http://api.elsevier.com/content/abstract/scopus_id/85034108058 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Frontiers in Marine Science [ISSN 2296-7745], v. 4 (article number 370) ar |
op_relation |
Frontiers in Marine Science 4 2296-7745 WoS doi:10.3389/fmars.2017.00370 85034108058 000457690600368 http://api.elsevier.com/content/abstract/scopus_id/85034108058 -;1340;-;2728 article number 370 1340;2728 Sí |
op_rights |
by-nc-nd info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.3389/fmars.2017.00370 |
container_title |
Frontiers in Marine Science |
container_volume |
4 |
_version_ |
1766136070956646400 |