Sampling using the TriOS radiometers in the Tamar estuary

Testing the limits of algorithms

17 May 2022
In second fieldwork campaign in the Plymouth region during a week in April 2022, we extended sampling inland, towards the upper reaches of the Tamar and Plym estuaries, and seaward off the Breakwater and Whitsand Bay. This gave us good coverage of the transitional waters between riverine and coastal areas and enabled sampling in a wide variety of optical conditions with different sediment particle loads. The CERTO team covered

Venice lagoon

One hundred stations sampled in the Venice Lagoon

16 January 2022
The CNR team carried out extensive calibration and validation fieldwork at over 100 sampling stations in the Lagoon of Venice and in the adjacent coastal areas.

The fieldwork took place between March and August 2021 and was timed to coincide with Sentinel-2 satellite overpasses. The measurement stations were visited with a maximum time difference of one hour from


Following the tide into the Tamar

10 January 2022
The CERTO team sampled in the Plymouth Sound and followed the tidal wave with saline water into the Tamar Estuary for more than 20 km during a field campaign in September 2021.

The aim of this work was to investigate the optical properties of water causing changes in colour observed from satellites along a gradient of salinity.

This study is important to improve satellite remote sensing


Fisalia research vessel sampling in the Tagus

Comparing radiometers in the Tagus

15 November 2021
An extensive field work campaign in the Tagus estuary, Portugal took place in October 2021. 

Two sets of radiometers, one from the CERTO project and the other from the Alfred Wegener Institut were mounted on the Fisália research ship to obtain measurements of water quality that will be used to validate satellite


The So-Rad system at work in the Razelm-Sinoe lagoon

Summer in the Danube Delta and Black Sea

19 October 2021
The plan for the summer season of 2021 was to cover several environments in the Danube Delta and the coastal area of the Black Sea – lagoons, lakes, channels, river mouths, in order to capture the variability of optical properties and in-water parameters. 

Three field campaigns took place, one in the Razelm-Sinoe lagoon and two in the Sulina and Sfantu Gheorghe discharging areas, including the Musura and Sahalin lagoons and the Red Lake.

The team did


Curonian field campaign

13 September 2021
In the Curonian Lagoon a two-day field campaign was performed from 22 to 23 July 2021 to collect water samples and radiometric measurements, synchronous with Sentinel-2, Sentinel-3 and PRISMA satellite acquisitions.

Continuous radiometric measurements from TriOS Hyperspectral Radiometer (University of Stirling) and ROX (CNR) instruments were collected along two different transects into the Lagoon and on a fixed position on a long jetty


CTD and bottle sampling instruments mounted on a frame for in-water sampling

Sampling in the Elbe estuary

6 September 2021
A one-week field campaign was held at the end of June on the Elbe River, starting from just before Hamburg and ending at the river mouth in Cuxhaven, to gather samples at different stations along the river, and at less sampled areas of the river.

The CERTO field campaign was organised by University Stirling with the consultancy of Brockmann Consult, the Certo Elbe Case Study Site lead. Hereon (formerly HZG), the local advisor board member, provided great technical and


Fieldwork in the Danube Delta

29 May 2021
A short field campaign was held in the Danube Delta at the end of April, with the primary aim of testing the So-Rad system.

The Solar Tracking Radiometry platform (So-Rad) is designed to control and automate underway radiometric measurements for satellite validation from ships and buoys. It consists of two sets of Trios spectroradiometers


Latest Tweet



CERTO in the media

How can we leverage space innovation to take climate action? Opinion piece by Climate-KIC, including description of work with CERTO. 4 October 2021.

Research explained by scientists: GeoEcoMar is involved in 3 European projects that develop applications for Copernicus and NASA satellite data. and 24 April 2020 (in Romanian)

CERTO: monitoring water quality at a global scale. News article on Future Earth Coasts website. 6 April 2021.

A short film on DANUBIUS-RI featuring several CERTO scientists. 


CERTO Newsletter

An e-newsletter is distributed every six months with details of project progress and highlights. The first edition was distributed in August 2020, shortly after the six-month progress meeting. If you would like to receive the newsletter please complete the short "Register for updates" form in the footer of the website. The next edition will be produced in early 2021, please email with any contributions.