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Category Archives: Numerical modelling
Don’t (always) blame the weather forecaster
By: Ross Bannister There are (I am sure) numerous metaphors that suggest that a small, almost immeasurable event, can have a catastrophic outcome – that adding the proverbial straw to the load of the camel will break its back. In 1972, … Continue reading
High-resolution insights into future European winters
By: Alexander Baker Figure 1: Observed UK rainfall anomaly as a percentage of 1981-2010 monthly average for (a) December 2013, (b) January 2014, and (c) February 2014. Figure from Huntingford et al. (2014). Most – roughly 70% – of Europe’s winter … Continue reading
Turbulence Matters
By: Torsten Auerswald Most people are only consciously aware of the existence of turbulence when the pilot announces it. But apart from the discomfort of a bumpy flight, turbulence affects us in many other important aspects of daily life. The … Continue reading
Posted in Numerical modelling, Turbulence
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Making the best use of HPC
By: Grenville Lister High performance computing (HPC) is changing – there will be a new UK national service in early 2020 (and a period of time with no national service while the new platform is installed) – and the medium … Continue reading
The OpenIFS User Workshop
By Bob Plant I’ve been asked to write a blog post to go live on 17 June, the opening day of the 2019 OpenIFS user workshop. As I’m involved in the organisation, it would almost seem strange not to talk … Continue reading
Convective self-aggregation: growing storms in a virtual laboratory
By: Chris Holloway Figure 1: An example of convective self-aggregation from an RCE simulation using the Met Office Unified Model at 4km grid length with 300 K SST. Time mean precipitation in mm/day for (a) Day 2 (still scattered), and … Continue reading
Modelling Ice Sheets in the global Earth System
By: Robin Smith As Till wrote recently, our national flagship climate model (UKESM1, the UK Earth System Model) has been officially released for the community to use, after more than six years in development by a team drawn from across … Continue reading
Posted in antarctica, Arctic, Climate, Climate modelling, Cryosphere, Numerical modelling
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The Boundary Layer and Submesoscale Motions
By: Alan Grant Science is an exciting career, although what you may consider to be exciting will depend on your field. Sometimes things get most exciting when what initially appears to be a frustrating problem turns into an interesting problem. … Continue reading
Posted in Boundary layer, Climate, Numerical modelling, Oceans
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Multi-fluids Modelling of Convection
By: Hilary Weller Atmospheric convection – the dynamics behind clouds and precipitation – is one of the biggest challenges of weather and climate modelling. Convection is the driver of atmospheric circulation, but most clouds are smaller than the grid size … Continue reading
Posted in Climate, Convection, Numerical modelling
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UKESM1 ready to use and in production for CMIP6
By: Till Kuhlbrodt Development of the UK Earth System Model (UKESM1) has reached a major milestone. After six years of work on the model (see my earlier blog post here) the UKESM core group, and other scientists, are now running … Continue reading