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Category Archives: Numerical modelling
The Core-cloak Convection Model
By: Jian-Feng Gu Moist convection plays a fundamental role in large-scale circulations and climate, ranging from cumulus clouds smaller than 100m to organized weather systems of several thousands of kilometers. Limited by their grid spacing, numerical models are not able … Continue reading
Posted in Climate, Clouds, Convection, Numerical modelling
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Practical Problems when Simulating the Earth
By: David Case In principle, to simulate the earth should be a doddle. We know that it’s made of such things as molecules, crystals and atoms, and the forces between these derive from charged particles, and these do little more … Continue reading
Posted in Climate, Numerical modelling
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Covid-19: Using tools from geophysics to assess, monitor and predict a pandemic
By: Alison Fowler, Alberto Carrassi, Javier Amezcua The emergence of a new coronavirus disease, known as Covid-19, that could be transmitted between people was identified in China in December 2019. By 3rd March 2020 it had spread to every continent … Continue reading
Posted in Climate, data assimilation, Numerical modelling
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Finding the skill of forecasts of extreme precipitation in Southeast Asia
By: Samantha Ferrett Forecasting weather in Southeast Asia Southeast (SE) Asia is prone to high‐impact weather and is often subject to flooding and landslides as a result of heavy rainfall. Just last month Indonesia was hit by heavy rainfall that … Continue reading
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