European Space Agency Plymouth Marine Lab The robustness of these trends were tested using different methods to calculate the phenology. The trends were the same across the methods

European Space Agency Plymouth Marine Lab Over 10 years ago Sandy Thomalla classified the Southern Ocean into regimes using chlorophyll-a and seasonality. Here we are able to do the same classification and look at how it is changing.

European Space Agency Plymouth Marine Lab Sandy Thomalla The seasonal adjustments we find are being driven by large scale changes in ocean physics and chemistry, which could impact global climate by altering natural CO2 uptake

European Space Agency Plymouth Marine Lab Sandy Thomalla Seasonal adjustments such as this also raise concerns that the base of the food web may become desynchronised from higher tropic levels, known as the match/mis-match hypothesis.

European Space Agency Plymouth Marine Lab Sandy Thomalla We may have found one of the reasons why larger marine species such as whales, seabirds and seals have begun to alter their breeding and feeding patterns across the Southern Ocean

European Space Agency Plymouth Marine Lab Sandy Thomalla The authors Sandy Thomalla Sarah Nicholson Dr Tommy Ryan-Keogh & Dr Marié Smith would like to thank all the institutions and funding bodies which made this research possible CSIR 🇿🇦 @dsigovza National Research Foundation of South Africa UCT MARIS

Proud to share my first author and first publication from my Ph.D co-authored by Sandy Thomalla Dr Marié Smith et al. Here, we use historical datasets and satellite match-ups to develop a remote sensing algorithm for detection of multiple phytoplankton groups in the Benguela.

Not sure if anyone still uses Twitter these days(!), but I want to get the word out that I will soon be hiring 2 postdocs (and recruiting PhD students) to join me at the University of St Andrews in Scotland. All things ocean, carbon, and climate. (1/2)

Today our Research Group Leader Sandy Thomalla spoke about “Trends in Southern Ocean phytoplankton bloom phenology, primary production and iron stress” at the World Climate Research Programme (WCRP) conference

Very pleased to announce that our new data product paper on global oceanic multi-model net primary productivity is out now in Earth Syst Sci Data essd.copernicus.org/articles/15/48…

Here we took 5 different algorithms and applied them to the European Space Agency Plymouth Marine Lab Ocean Colour Climate Change Initiative data to develop one of the longest records available for NPP

European Space Agency Plymouth Marine Lab By proving multiple algorithms we hope that users can interrogate the distribution of NPP to identify consensus or outliers for informed decisions of regional analyses

European Space Agency Plymouth Marine Lab For access to the data you can check out the SOCCO Zenodo repository where we will be applying regular updates going forward to this data product zenodo.org/communities/so…

Check out the thread below for a new ocean colour NPP data product developed by us.

Catching up with Bronwyn Wake and Dr Sam Burgess 🌍🌡🛰 at the World Climate Research Programme (WCRP) conference in Kigali, Rwanda. All past participants of the XX Dissertations Symposium in Chemical Oceanography (DISCO), Honolulu Hawaii, where we first met in 2006.

Junior researcher Thulwaneng Mashifane, SOCCO RGL Dr Sandy Thomalla & senior researcher Precious Mongwe represented #TeamCSIR as speakers at the All-Atlantic Ocean Research & Innovation Alliance that was held on 21 & 22 Nov at the CT ICC. socco.org.za for more

🚨JOB ALERT🚨 We are recruiting for 2 new positions to work on ocean-climate modelling and model development. Applications close 1st January. Go to csir.co.za/vacancies and search for refs: 313330 or 313331 Please note South African candidates will be given preference.

📰 Preprint now available ' Observed global ocean phytoplankton phenology indices' by Sarah-Anne Nicholson, Thomas Ryan-Keogh, Sandy. Thomalla, Nicolette Chang, & Marie Smith #SANAP SOCCO @dsigovza National Research Foundation of South Africa Environmentza Earth Syst Sci Data essd.copernicus.org/preprints/essd…

For the record - I am deactivating my twitter/ X account. ... cause elon.