Fatma Jebri
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View article: Freshwater Sources in the Global Ocean Through Salinity‐ <i>δ</i> <sup>18</sup> O Relationships: A Machine Learning Solution to a Water Mass Problem
Freshwater Sources in the Global Ocean Through Salinity‐ <i>δ</i> <sup>18</sup> O Relationships: A Machine Learning Solution to a Water Mass Problem Open
Changes in the hydrological cycle can affect ocean circulation and ventilation. Freshwater enters the ocean as meteoric water (MW; precipitation, river runoff, and glacial discharge) and sea ice meltwater (SIM). These inputs are traced usi…
View article: Cold Spells, Fresh Waves, and the Biogeochemical Response in the North Atlantic Cold Anomaly Region
Cold Spells, Fresh Waves, and the Biogeochemical Response in the North Atlantic Cold Anomaly Region Open
Regional effects of marine cold spells (MCS, periods of anomalous cooling), their impact on ecosystem biogeochemistry, and link to salinity extremes remain underexplored. A case in point is North Atlantic's Cold Anomaly (CA) region (known …
View article: Water mass changes in Florida Straits since 2
Water mass changes in Florida Straits since 2 Open
Using 102 repeat hydrographic sections and a machine-learning approach, we define the water masses within Florida Straits and their variability since 2001. We find significant changes in the temperature and salinity properties of the Strai…
View article: Impact of a newly observed recurring eddy on the western Bay of Bengal productivity&#160;
Impact of a newly observed recurring eddy on the western Bay of Bengal productivity  Open
Mesoscale eddies have a significant impact on the biological productivity in the Bay of Bengal (Eastern Indian Ocean). However, we do not currently have a complete understanding of them. The Bay of Bengal is a region that is highly depende…
View article: Abrupt Changes in the Timing and Magnitude of the North Atlantic Bloom Over the 21st Century
Abrupt Changes in the Timing and Magnitude of the North Atlantic Bloom Over the 21st Century Open
The North Atlantic subpolar gyre (SPG) is a key region for the North Atlantic bloom (NAB), the phytoplankton foundation of the regional food web. The NAB depends on nutrients seasonally introduced into the surface ocean by deep winter conv…
View article: Marine heatwaves and cold spells in the Northeast Atlantic: what should the UK be prepared for?
Marine heatwaves and cold spells in the Northeast Atlantic: what should the UK be prepared for? Open
Up to now, the UK has avoided major marine heatwaves (MHWs) that cause severe damage to marine ecosystems and the blue economy. However, an unprecedented in its intensity, though short-lived, MHW occurred in UK waters in June 2023. This ev…
View article: An exceptional phytoplankton bloom in the southeast Madagascar Sea driven by African dust deposition
An exceptional phytoplankton bloom in the southeast Madagascar Sea driven by African dust deposition Open
Rising surface temperatures are projected to cause more frequent and intense droughts in the world's drylands. This can lead to land degradation, mobilization of soil particles, and an increase in dust aerosol emissions from arid and semi-…
View article: Abrupt Changes in the Timing and Magnitude of the North Atlantic Bloom Over the 21st Century
Abrupt Changes in the Timing and Magnitude of the North Atlantic Bloom Over the 21st Century Open
The North Atlantic subpolar gyre is a key region for the North Atlantic phytoplankton bloom (NAB), the foundation of the regional foodweb. The NAB is dependent on nutrients seasonally introduced into the surface ocean by deep winter convec…
View article: Abrupt Changes in the Timing and Magnitude of the North Atlantic Bloom Over the 21st Century
Abrupt Changes in the Timing and Magnitude of the North Atlantic Bloom Over the 21st Century Open
The North Atlantic subpolar gyre is a key region for the North Atlantic phytoplankton bloom (NAB), the foundation of the regional foodweb. The NAB is dependent on nutrients seasonally introduced into the surface ocean by deep winter convec…
View article: Relating excess and redistributed temperature to the Turner Angle in the subtropical North Atlantic using GO-SHIP observations and Machine Learning
Relating excess and redistributed temperature to the Turner Angle in the subtropical North Atlantic using GO-SHIP observations and Machine Learning Open
The ocean takes up 93% of the warming in the climate system. Here, we develop methods to isolate this warming signature using multidecadal observations in the North Atlantic. As part of GO-SHIP, repeat ship-based CTD hydrographic observati…
View article: Comment on bg-2023-182
Comment on bg-2023-182 Open
Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing as well as those which are more gradual and occur over longer timescales. These abrupt changes have not yet been identified and q…
View article: Comment on bg-2023-182
Comment on bg-2023-182 Open
Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing as well as those which are more gradual and occur over longer timescales. These abrupt changes have not yet been identified and q…
View article: Absence of the Great Whirl giant ocean vortex abates productivity in the Somali upwelling region
Absence of the Great Whirl giant ocean vortex abates productivity in the Somali upwelling region Open
Somali upwelling is the fifth largest upwelling globally with high productivity, attracting tuna migratory species. A key control on the upwelling productivity is its interaction with one of the world’s largest oceanic eddies, the Great Wh…
View article: Comment on bg-2023-182
Comment on bg-2023-182 Open
Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing as well as those which are more gradual and occur over longer timescales. These abrupt changes have not yet been identified and q…
View article: Reviews and syntheses: Abrupt ocean biogeochemical change under human-made climatic forcing – warming, acidification, and deoxygenation
Reviews and syntheses: Abrupt ocean biogeochemical change under human-made climatic forcing – warming, acidification, and deoxygenation Open
Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing as well as those which are more gradual and occur over longer timescales. These abrupt changes have not yet been identified and quantified …
View article: Atmospheric and advective forcing of upwelling on South Africa's central Agulhas Bank
Atmospheric and advective forcing of upwelling on South Africa's central Agulhas Bank Open
Current and temperature structures on South Africa's central Agulhas Bank are described from six months of moored observations and ancillary data collected during the seasonal transition from austral spring to summer (October 2018–March 20…
View article: Automated detection of coastal upwelling in the Western Indian Ocean: Towards an operational “Upwelling Watch” system
Automated detection of coastal upwelling in the Western Indian Ocean: Towards an operational “Upwelling Watch” system Open
Coastal upwelling is an oceanographic process that brings cold, nutrient-rich waters to the ocean surface from depth. These nutrient-rich waters help drive primary productivity which forms the foundation of ecological systems and the fishe…
View article: Retention properties of the Agulhas bank and their relevance to the chokka squid life cycle
Retention properties of the Agulhas bank and their relevance to the chokka squid life cycle Open
Retention is thought to be a crucial component required to create a favourable habitat for coastal pelagic species. It is vital for the survival of ‘chokka’ squid (Loligo reynaudii), which is a fishery that supports thousands of people liv…
View article: Earth Observation and Machine Learning Reveal the Dynamics of Productive Upwelling Regimes on the Agulhas Bank
Earth Observation and Machine Learning Reveal the Dynamics of Productive Upwelling Regimes on the Agulhas Bank Open
The combined application of machine learning and satellite observations offers a new way for analysing complex ocean biological and physical processes. Here, an unsupervised machine learning approach, Self Organizing Maps (SOM), is applied…
View article: Drivers of productivity on the Agulhas Bank and the importance for marine ecosystems
Drivers of productivity on the Agulhas Bank and the importance for marine ecosystems Open
The Agulhas Bank, an area of broad continental shelf extending 250 km offshore of South Africa, sustains rich and productive fisheries. However, its primary production is driven by a complex mosaic of biophysical mechanisms, highly variabl…
View article: Spatial and temporal variability of Net Primary Production on the Agulhas Bank, 1998–2018
Spatial and temporal variability of Net Primary Production on the Agulhas Bank, 1998–2018 Open
Despite the importance of Agulhas Bank (AB) marine productivity in supporting South African coastal fisheries and shelf ecosystems, there are relatively few regional-scale assessments of its spatial and temporal variability, and most produ…
View article: Productivity driven by Tana river discharge is spatially limited in Kenyan coastal waters
Productivity driven by Tana river discharge is spatially limited in Kenyan coastal waters Open
The Tana River is the longest river system in Kenya (~1000 km) and contributes ~ 50% of the total river discharge to Kenyan coastal waters. The river discharges significant amounts of nutrients and sediments, reaching ~24,000 tons per day …
View article: Managing emerging fisheries of the North Kenya Banks in the context of environmental change
Managing emerging fisheries of the North Kenya Banks in the context of environmental change Open
The North Kenya Banks have long been considered an important emerging fishery with the potential to spur economic growth for local fishing communities. As a regionally important extension to the otherwise narrow East African continental sh…
View article: Key climate change stressors of marine ecosystems along the path of the East African coastal current
Key climate change stressors of marine ecosystems along the path of the East African coastal current Open
For the countries bordering the tropical Western Indian Ocean (TWIO), living marine resources are vital for food security. However, this region has largely escaped the attention of studies investigating potential impacts of future climate …
View article: Variability of mackerel fish catch and remotely-sensed biophysical controls in the eastern Pemba Channel
Variability of mackerel fish catch and remotely-sensed biophysical controls in the eastern Pemba Channel Open
Advances in satellite remote sensing of environmental perturbations have become important in understanding variations of ocean productivity and small pelagic fish catches. This marine resource is vital for coastal populations dependent on …
View article: A Major Ecosystem Shift in Coastal East African Waters during the 1997/98 Super El Ni&#241;o as Detected Using Remote Sensing Data
A Major Ecosystem Shift in Coastal East African Waters during the 1997/98 Super El Niño as Detected Using Remote Sensing Data Open
<p>Under the impact of natural and anthropogenic climate variability, upwelling systems are known to change their properties leading to associated regime shifts in marine ecosystems. These often impact commercial fisheries and societ…
View article: A Major Ecosystem Shift in Coastal East African Waters During the 1997/98 Super El Niño as Detected Using Remote Sensing Data
A Major Ecosystem Shift in Coastal East African Waters During the 1997/98 Super El Niño as Detected Using Remote Sensing Data Open
Under the impact of natural and anthropogenic climate variability, upwelling systems are known to change their properties leading to associated regime shifts in marine ecosystems. These often impact commercial fisheries and societies depen…
View article: The small pelagic fishery of the Pemba Channel, Tanzania: What we know and what we need to know for management under climate change
The small pelagic fishery of the Pemba Channel, Tanzania: What we know and what we need to know for management under climate change Open
Small pelagic fish, including anchovies, sardines and sardinellas, mackerels, capelin, hilsa, sprats and herrings, are distributed widely, from the tropics to the far north Atlantic Ocean and to the southern oceans off Chile and South Afri…
View article: Interannual monsoon wind variability as a key driver of East African small pelagic fisheries
Interannual monsoon wind variability as a key driver of East African small pelagic fisheries Open
Small pelagic fisheries provide food security, livelihood support and economic stability for East African coastal communities—a region of least developed countries. Using remotely- sensed and field observations together with modelling, we …