Author Archives: danaallen

The Turbulent Life Of Clouds

By: Thorwald Stein It’s been a tough summer for rain enthusiasts in Southern England, with the region having just recorded its driest July on record. But, there was no shortage of cloud: there will have been the slight probability of … Continue reading

Posted in Climate, Clouds, Rainfall, Turbulence, Weather forecasting | Leave a comment

Modelling Convection In The Maritime Continent

By: Steve Woolnough The Maritime Continent, the archipelago, including Malaysia, Indonesia, the Philippines and Papua New Guinea is made up of hundreds of islands of varying shapes and sizes. It lies in some of the warmest waters on Earth and … Continue reading

Posted in Maritime Continent, Numerical modelling, Tropical convection | Leave a comment

What Is The World Climate Research Programme And Why Do We Need It?

By: Rowan Sutton My schedule last week was rather awry.  Over four days I took part in a meeting of 50 or so climate scientists from around the world.  Because of the need to span multiple time zones, the session … Continue reading

Posted in Climate change, Climate modelling | Leave a comment

The Golden Age Of Radar

By: Rob Thompson One of the most frequently viewed pages on weather apps is the radar imagery. We see them on apps, websites and TV forecasts, and have done for years. But rarely do we see much about what we … Continue reading

Posted in Climate, earth observation, Flooding, Hydrology, Measurements and instrumentation, radar | Leave a comment

Density Surfaces In The Oceans

By: Remi Tailleux Below the mixed layer, shielded from direct interaction with the atmosphere, ocean fluid parcels are only slowly modified by turbulent mixing processes and become strongly constrained to move along density surfaces of some kind, called `isopycnal’ surfaces. … Continue reading

Posted in Climate, Fluid-dynamics, Oceanography, Oceans | Leave a comment

Is Europe At Risk From Hurricanes?

By: Reinhard Schiemann Growing up in Europe late last century, I would have been a little surprised at this question, and my knee-jerk answer would have been a firm no: hurricanes happened on TV in far-away tropical places, bending and … Continue reading

Posted in Climate, Europe, extremes, North Atlantic, Windstorms | Leave a comment

Forecasting Rapid Intensification In Hurricanes And Typhoons.

By: Peter Jan Leeuwen We all know the devastating power of hurricanes, typhoons, and their Southern Hemisphere counterparts. It is crucial that we predict their behaviour accurately to avoid loss of life and to better guide large-scale infrastructure operations. Although … Continue reading

Posted in Climate, data assimilation, Predictability, Tropical cyclones | Leave a comment

A Different Kind Of Turbulence

By Miguel Teixeira It might be thought that turbulence is essentially the same everywhere. However, its mixing efficiency depends not only on its intensity (as might be expected intuitively), but also on more subtle properties, such as its anisotropy (which … Continue reading

Posted in Boundary layer, Climate, Environmental physics, Fluid-dynamics, Oceans, Turbulence, Waves | Leave a comment

Co-Producing New Sub-Seasonal Weather Forecasts in Africa

By: Linda Hirons Weather-related extremes affect the lives and livelihoods of millions of people across tropical Africa. Access to reliable, actionable weather information is key to improving the resilience of African populations and economies. Specifically, at the extended sub-seasonal timescale … Continue reading

Posted in Africa, Climate, Co-production, drought, Energy meteorology, Forecasting Testbed, Madden-Julian Oscillation (MJO), Predictability, Rainfall, Renewable energy, Seasonal forecasting, subseasonal forecasting, Tropical convection, Weather forecasting | Leave a comment

Are There Climate Consequences of Using Hydrogen as a Replacement for Coal, Gas and Oil?

By: Keith Shine There are many possible avenues to reduce carbon dioxide emissions. One of these is a shift to using hydrogen (H2) as a fuel source; it could potentially be used for many current CO2-emitting activities, including industry, heating … Continue reading

Posted in Atmospheric chemistry, Climate, Climate change, Greenhouse gases, Renewable energy | Leave a comment