Category Archives: Modelling

Forecasting the present

Forecasting the weather is very difficult, but the concept itself is simple. If we know the state of the atmosphere right now, the initial state, we can use well-understood physical laws to predict how the atmosphere will change over time. … Continue reading

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Supercomputer says no: gridding the Earth in next-generation weather and climate models

Making a timely weather forecast, or running a high-resolution global climate model, requires the use of a massive supercomputer.  Simulations that would take months to run on a normal computer take just hours on a supercomputer.  However, supercomputers are far … Continue reading

Posted in Climate, Forecasting, Future, Modelling | Tagged , , | 2 Comments

Hydrology and hydrological model

Quite often people ask me about my field of study in parties or activity groups out of geo department. When I answer: “hydrology”, there is a large chance that a big question mark shows on their face with a “not … Continue reading

Posted in Circulation, Climate, Forecasting, KlimaSnakk, Learning, Modelling, Precipitation, Present | Tagged , , , , , , , , , | 1 Comment

A History of Climate Models

Many PhD researchers use climate models with little thought of how they were developed. Often there just isn’t time in modern schedules to investigate their history. How these models evolved through the ages is pretty interesting and involves battling mathematicians … Continue reading

Posted in Circulation, Climate, Forecasting, Future, Learning, Modelling, Ocean, Past, Present | Tagged , , , , , , , , , | 5 Comments

What Is A Sudden Stratospheric Warming And Why Should We Care?

In recent years the stratosphere has become a hot topic in the science community. Many people believe that a better understanding of the stratosphere will lead to a variety of positive implications. These include: More sophisticated (and realistic) general circulation … Continue reading

Posted in Circulation, Climate, Cyclone, Forecasting, Jet, Modelling, Vortex, Wind | Tagged , , , , , , | 1 Comment

The making of an ocean wave (forecast)

A big winter storm is brewing in the North Atlantic. Meteorologists on TV exclaim that there is a developing storm system just south of Iceland, and that the current position of the polar front will most likely steer the low … Continue reading

Posted in Cyclone, Forecasting, Modelling, Ocean, Sea, Uncategorized, Wind | Tagged , , , , , , , , , , , , | 4 Comments

Rainforests in the Sahara

The Hadley Circulation, responsible for the tropical humid band across the equator and the subtropical dry zones just poleward of it (e.g. Sahara Desert north of the Congo Rainforest), could be expanding [1]. The potential impact on society and the … Continue reading

Posted in Air, Circulation, Climate, Cyclone, Future, Modelling, Regional, Tropics | Tagged , , , , , , , | 1 Comment

To rain or not to rain: Precipitation in a changing climate

Precipitation is notoriously hard to forecast accurately. The formation of precipitation is a fine balance between many factors, and small changes in any of these can influence whether it rains, where it rains, and how much rain falls. Predicting how … Continue reading

Posted in Circulation, Climate, Forecasting, Future, Modelling, Precipitation, Regional | Tagged , , , , , , , | 1 Comment