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R/V Johan Hjort

R/V Johan Hjort

Argo deployments and status in 2021

In 2021, twelve new Argo floats were deployed in the Nordic Seas during a cruise with R/V Johan Hjort in April/May with Henrik Søiland (IMR) as cruise leader.

Equipment being tested on deck before deployment

Testing an Argo float before deployment

Henrik Søiland standing next to BGC and deep Argo float

Henrik Søiland with BGC and deep Argo float.

Three persons on deck, deploying equipment off the vessel side.

Deployment of a Bio Argo float

Figure 1 below shows the location of the Argo deployments while figure 2 shows which sensors that are attached on the floats. Numbers of deployed float types are: 1 BGC (Provor CTS4), 3 Bio (Provor CTS4), 1 Deep (Deep Arvor), and 7 core (Arvor). Two of the core floats include also oxygen sensor. At each deployment location a CTD-station was taken with water samples for analysis of salinity, nutrients, oxygen (analyzed on board), chlorophyll-a, pH and Particulate Organic Carbon (POC) for comparison with Argo data.

With the new Argo float deployments Argo Norway (NorArgo) has at present (9. June 2021) 40 operative Argo floats. The locations of the Norwegian and other countries operative floats in the Nordic Seas and Barents Sea are shown in figure 3.

Daily updated information of Argo float locations and profiles within the Nordic Seas can be viewed on the NorArgo operational web site.

Map that shows the location of the Argo deployments

Fig 1. Location of Argo floats deployed in 2021

Table that shows which sensors that are attached on the floats

Fig 2. Float types

Map that shows the locations of the Norwegian and other countries operative floats in the Nordic Seas and Barents Sea

Fig 3. Operative Argo floats in the Nordic Seas and Barents Sea. Large orange dots are Norwegian floats while small black dots are floats from other countries.