干旱区生态环境知识资源中心(Arid): Recent Trends in SST, Chl-a, Productivity and Wind Stress in Upwelling and Open Ocean Areas in the Upper Eastern North Atlantic Subtropical Gyre

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DOI	10.1029/2021JC017268
	Recent Trends in SST, Chl-a, Productivity and Wind Stress in Upwelling and Open Ocean Areas in the Upper Eastern North Atlantic Subtropical Gyre
	Siemer, J. P.; Machin, F.; Gonzalez-Vega, A.; Arrieta, J. M.; Gutierrez-Guerra, M. A.; Perez-Hernandez, M. D.; Velez-Belchi, P.; Hernandez-Guerra, A.; Fraile-Nuez, E.
通讯作者	Fraile-Nuez, E (corresponding author), CSIC, Inst Espanol Oceanog IEO, Ctr Oceanog Canarias, Santa Cruz De Tenerife, Spain.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
EISSN	2169-9291
出版年	2021
卷号	126 期号:8
英文摘要	The global upper ocean has been warming during the last decades accompanied with a chlorophyll-a (Chl-a) and productivity decrease. Whereas subtropical gyres show similar trends, Eastern Boundary Upwelling Systems are thought to increase in productivity due to increased trade winds. This study analyzes recent trends in sea surface temperature (SST), Chl-a, net primary production (NPP) and meridional wind stress in the Eastern North Atlantic subtropical gyre (NASE) in order to examine if the global trends can be detected in open ocean and upwelling areas and how the ocean biota responds. Satellite data of such variables of the last 15-40 years were analyzed to calculate mean trends in upwelling areas in the Canary upwelling system and open ocean areas around the Azores, Madeira and the Canary Islands. Our results show significant warming in the area with a maximum of 2.7 degrees C per century for the Azores. Moreover, a general decreasing trend for Chl-a and NPP seems to be more evident in the permanent upwelling areas, which will be responsible for a loss of 0.13% of the global NPP per century. Our results also highlight a significant expansion of the oceanic desert area of 10% with an increase in unproductive days of up to 84 days in the last 20 years. The competitive relationship of stratification and wind stress in the Canary upwelling system might be a more plausible explanation for the decrease in Chl-a and NPP in upwelling areas linked to the increase in upwelling favorable wind stress and the surface warming.
英文关键词	SST trends productivity trends wind trends North Atlantic subtropical gyre Canary upwelling system upwelling intensification
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000690758000021
WOS关键词	SEA-SURFACE TEMPERATURE ; CANARY CURRENT ; PORTUGUESE COAST ; CURRENT SYSTEM ; CLIMATE-CHANGE ; VARIABILITY ; CIRCULATION ; BOUNDARY ; TROPICALIZATION ; INTENSIFICATION
WOS类目	Oceanography
WOS研究方向	Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363897
作者单位	[Siemer, J. P.] Univ Algarve, Campus Gambelas, Faro, Portugal; [Siemer, J. P.; Machin, F.] Univ Las Palmas Gran Canaria, Dept Fis, Las Palmas Gran Canaria, Spain; [Gonzalez-Vega, A.; Arrieta, J. M.; Velez-Belchi, P.; Fraile-Nuez, E.] CSIC, Inst Espanol Oceanog IEO, Ctr Oceanog Canarias, Santa Cruz De Tenerife, Spain; [Gutierrez-Guerra, M. A.; Perez-Hernandez, M. D.; Hernandez-Guerra, A.] Univ Las Palmas Gran Canaria, Inst Oceanog & Cambio Global IOCAG, Las Palmas Gran Canaria, Spain
推荐引用方式 GB/T 7714	Siemer, J. P.,Machin, F.,Gonzalez-Vega, A.,et al. Recent Trends in SST, Chl-a, Productivity and Wind Stress in Upwelling and Open Ocean Areas in the Upper Eastern North Atlantic Subtropical Gyre[J],2021,126(8).
APA	Siemer, J. P..,Machin, F..,Gonzalez-Vega, A..,Arrieta, J. M..,Gutierrez-Guerra, M. A..,...&Fraile-Nuez, E..(2021).Recent Trends in SST, Chl-a, Productivity and Wind Stress in Upwelling and Open Ocean Areas in the Upper Eastern North Atlantic Subtropical Gyre.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,126(8).
MLA	Siemer, J. P.,et al."Recent Trends in SST, Chl-a, Productivity and Wind Stress in Upwelling and Open Ocean Areas in the Upper Eastern North Atlantic Subtropical Gyre".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 126.8(2021).