Campaña: D326

The main testable hypothesis of the proposed work is: Atmospheric inputs control rates of primary production and microbial diversity in oceanic waters where nutrients are limiting.

The objectives of the project are to:

1. Obtain an improved temporal and spatial estimate of atmospheric dust inputs to the tropical N Atlantic through collections on a dedicated SOLAS process cruise.

2. Obtain an improved estimate of the seawater dissolution of N, P, Fe and Zn species from aerosol dust.

3. Determine the impact of atmospheric dust derived micronutrients on microbial community production and species diversity in the surface microlayer and underlying waters.

In addition, researchers from the Archer/Geider group were on-board. The overall aim of their research was to determine the extent to which the photoprotective roles of DMSP and QAs influence their production rates in marine surface waters and hence, the production of their volatile breakdown products.

The cruise objectives for this work were to:

1. relate DMSP and QAC concentrations to plankton community structure, light regime, photoinhibition, xanthophyll cycle and MAA accumulation in varying oceanic provinces and over diel cycles.

2. determine the potential for photoinhibition and DMSP/GBT turnover in natural phytoplankton in contrasting oceanic provinces.

The cruise departed Tenerife on February 5, 2008, and we have conducted regular stations (typically 2 per day) along the cruise track. The track took us into the oligotrophic Atlantic waters, productive Cape Verde waters, and tropical waters with very high nitrogen fixation (judged initially from the Trichodesmium concentrations). The various researchers and groups have also started a range of biological experiments at different sites along the cruise track.

We have encountered a major dust event in week 2, and then from week 3 of the cruise we encountered large amounts of dust.

We have visited the TENATSO time series site near the Cape Verdes and have undertaken an extensive set of measurements there.

We have collected the atmospheric dust for elemental analyses (at UEA and NOCS), and also to produce leachates which are used on board for biological experiments.

We have undertaken sampling of the water column to analyse for dissolved and particulate metals, nutrients, dissolved organic matter, amino acids, hemes, thiols and phytochelatin synthase expression. In addition, nitrogen fixation measurements were undertaken, in tandem with nifh gene sampling.

Nitrate uptake experiments have been conducted. Furthermore, bacterial phosphate uptake experiments have been undertaken using addition of collected dust.

Halocarbon and DMS gas measurements have been conducted during the cruise. In addition, experiments have been undertaken by the Archer/Geider group on effects of high sun light exposure on DMS and GBT production.

The cruise has been very successful with a minimum of lost time.

 
Citation proposal
. Campaña: D326. http://datos.ieo.es/geonetwork/srv/api/records/urn:SDN:CSR:LOCAL:SI29200801050
 

INSPIRE

Identification

File identifier
urn:SDN:CSR:LOCAL:SI29200801050   XML
Hierarchy level
Campaña/Survey Series
Online resource
Protocol
WWW:LINK-1.0-http--related
Protocol
WWW:LINK-1.0-http--related
Resource identifier
code
urn:SDN:CSR:LOCAL:8265
Metadata language
Spanish; Castilian
Encoding
Format
XML
Version
1
Projection
code
World Geodetic System 84
 

Classification of data and services

Topic category
  • Oceans
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Keywords

GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Oceanographic geographical features
Ten-degree Marsden Squares ( marsden_square )
  • 38
  • 39
  • 40
  • 74
  • 75
  • 76
SeaDataNet Ports Gazetteer ( departure_place )
  • Santa Cruz de Tenerife
SeaDataNet Ports Gazetteer ( arrival_place )
  • Santa Cruz de Tenerife
International Standards Organisation countries ( departure_country )
  • Spain
International Standards Organisation countries ( arrival_country )
  • Spain
ICES Platform Codes ( platform )
  • Discovery
SeaVoX Platform Categories ( platform_class )
  • research vessel
SeaVoX salt and fresh water body gazetteer ( Place )
  • Northeast Atlantic Ocean (40W)
Other keywords
 
 

Geographic coverage

N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


N
S
E
W


 

Temporal reference

Temporal extent
Begin
2008-01-05T00:00:00Z
End
2008-02-05T00:00:00Z
Temporal extent
Date ( Creation )
2008-02-05
 

Quality and validity

Lineage
El Centro de datos aplica controles de calidad estandarizados a todos los datos de los que es responsable. Contacta con el Centro de datos para más información.
 

Conformity

Conformity
Conformity
 

Conformity

Conformity
Conformity
Explanation
See the referenced specification
Explanation
See the referenced specification
 

Restrictions on access and use

Use limitation
Not applicable
Access constraints
Access constraints
 

Restrictions on access and use

 

Responsible organization (s)

Contact for the resource
Organisation name
University of Southampton School of Ocean and Earth Science
Email
soes@noc.soton.ac.uk
 

Responsible organization (s)

Contact for the resource
Organisation name
University of Southampton School of Ocean and Earth Science
Email
soes@noc.soton.ac.uk
 

Metadata information

Contact for the metadata
Organisation name
Instituto Español de Oceanografía
Email
N/A
Date stamp
2021-11-28
Metadata language
Spanish; Castilian
Character set
utf8 UTF8
 
 

SDS

Conformance class 1: invocable

Access Point URL
Endpoint URL
Technical specification
 

Conformance class 2: interoperable

Coordinate reference system
 
Quality of Service
 
Access constraints
Limitation
 
Use constraints
Limitation
 
Responsible custodian
Contact for the resource
 
 

Conformance class 3: harmonized

 
 

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