NPqHO Vital De Oliveira PIRATA-BR XVII (GApr10)

Cruise summary report

Cruise Info. 
Ship name (ship code)NPqHO Vital De Oliveira (14KU)
Cruise identifierPIRATA-BR XVII (GApr10)
Cruise period2018-09-28 — 2018-10-09
Port of departureMaceio, Brazil
Port of returnNatal, Brazil
ObjectivesGEOTRACES process study.

The cruise was performed by multidisciplinary teams from various universities and aimed to collect hydroceanographic and meteorological data. The planning of the distribution of sampling stations considered collections with neuston net (Microplastic), water sampling (Rosette and thermosalinograph), temperature profiling, conductivity, dissolved oxygen, fluorescence (CTD System), temperature profiling with XBT, thermosalinograph, current velocity with Acoustic Doppler Current Profiler (ADCP), CO2 partial pressure with GO-PCO2, radiosonde atmospheric profiling, continuous measurements of atmospheric parameters (meteorological station), as well as bathymetric, seismic and gravimetric data surveys.

The goal of this leg was to perform 37 CTD profile stations with water sampling, however due to the weather (average wind of 20 kt reaching a maximum of 30 kt) and oceanographic conditions (current velocity close to 1m/s), as well as small damage to the Rosette cable, the Commander adopted a conservative posture and the last five CTD stations (PIRA_41, 42, 43, 44 and 45) of Transect 5°S were not performed.
Chief scientistPaulo Nobre (National Institute of Space Research, Centre for Weather Forecasting and Climate Studies)
ProjectGEOTRACES -Trace elements and their isotopes in the water column
Cruise reportNPqHO Vital De Oliveira PIRATA-BR XVII (GApr10) cruise report vitaldeoliveira_piratabrxvii.pdf (5.09 MB) 
Ocean/sea areas 
GeneralNorth West Atlantic Ocean (limit 40W)
South West Atlantic Ocean (limit 20W)
SpecificWestern Tropical Atlantic Ocean