John Siddorn

John is Head of the Ocean Forecasting Research and Development (OFRD) group and co-chair of the National Centre for Ocean Forecasting (NCOF).

Current activities

OFRD has the responsibility for developing models and satellite analyses for short-range ocean monitoring and forecasting, and is also involved in producing reanalyses for monitoring marine environment.

The group develop systems to provide the Met Office's monitoring and prediction capability for surface waves, storm surges, ocean dynamics and biogeochemistry forecast as well as the OSTIA sea ice and sea surface temperature satellite based analysis. This includes the responsibility for developing the waves modelling and marine data assimilation capability that is also used more widely in the Met Office.

Research on developing coupled atmosphere-wave-ocean-ice-biogeochemistry systems is being lead from the OFRD group, with the aim of developing a regional and global coupled systems for Numerical Weather Prediction, Ocean Forecasting and Environmental Prediction.

Career background

John had science leadership roles in the Ocean Forecasting Research and Development area from 2007 until 2012, when he became lead of the Ocean Modelling Group, providing ocean model development based on NEMO for applications across the Met Office. He became Head of Ocean Forecasting in 2014.

Prior to taking on management responsibilities John worked as Coastal Ocean Modelling Scientist (July 2003 to May 2007), with responsibilities for preparing developments to the suite of marine models run for the North West European shelf. John implemented, tested and transitioned to operations the ecosystem component  ERSEM of the MRCS North-West Shelf model and had primary responsibility for the research and development, monitoring and maintenance of the ocean shelf ecosystem and sediment short-term forecasting systems. John was also involved in the transitioning of the  POLCOMS physical ocean model from POL3DB to a new Fortran :90 version of the code. John worked on the EU Mersea and MarCoast projects to develop the underpinning operational systems, as well as to prepare services based on the operational products.

John originally joined the Met Office in March 2002 as a research scientist working on the environmental stresses project, concentrating initially on issues related to water resources. The aim of the work was to develop products to inform policy makers of regions which may experience changing levels of environmental stress, and hence social and political instability, due to a changing climate.

Prior to his career at the Met Office John worked for the Natural Environmental Research Council at  Plymouth Marine Laboratory as a mathematical modeller in a biogeochemistry modelling team with the primary responsibility for implementing marine dynamical models and coupling them to ERSEM.

John studied for an  MSc in Applied Physical Oceanography (1997/8) at the  University of Wales Bangor, School of Ocean Sciences where he was awarded the Darbyshire prize. He obtained his undergraduate degree in Marine Environmental Chemistry at the  University of Southampton (1991-1994).

External recognition

  • John is co-chair of the National Centre for Ocean Forecasting (NCOF).
  • John is on the  NOOS Steering Committee.
  • John chaired the Joint (NERC-Met Office) Ocean Modelling Programme (JOMP) (2012-2014).
  • John is a member of the Joint (NERC-Met Office) Coastal Ocean Modelling Programme (JCOMP)
  • John was on the EU FP7 GMES MyOcean Executive Committee (2009-2012).
  • John was briefly a member of the  GODAE steering team and is now a member of the GODAE OceanView Patrons Group.

Last updated: 28 May 2015

About John Siddorn

John Siddorn

John leads Ocean Forecasting R&D group, responsible for wave, surge and ocean analysis and forecast systems.

Areas of expertise:

  • Shelf seas dynamical modelling.

  • Shelf seas ecosystem modelling.

  • Marine forecasting.

Publications by John 

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