floods – Shamskm: A site to exchange knowledge and solutions

A Better Way to ID Extreme Weather Events in Climate Models

By Guest PostDecember 11, 2011Environmentatmospheric river, berkeley lab, bill collins, cam5, category 5 hurricane, climate simulation, community atmospheric model, computer models, cray xe6 supercomputer, dan krotz, data, effects of climate change, floods, frequency of extreme weather events, global atmosphere models, global climate model, hawaiian islands, heavy precipitation, high resolution simulation, hopper, hurricane, large datasets, library of congress, michael wehner, models, North America, pacific coast, pattern detection algorithm, prabhat, satellite images, simulation, weather, weather phenomenon, wes bethel

*Berkeley Lab scientists help automate the search for hurricanes and other storms in huge datasets*

You’d think that spotting a category 5 hurricane would never be difficult. But when the hurricane is in a global climate model that spans several decades, it becomes a fleeting wisp among mountains of data.

That’s a problem. As scientists develop ever-more sophisticated computer models to predict the effects of climate change, one of the things they’ll look for are changes in the frequency of extreme weather events such as hurricanes and heavy precipitation. The more data generated by models, however, the more difficult it is to quantify these rare but potent events. (more…)

Pakistan Floods Last Summer Could Have Been Predicted

By Guest PostFebruary 5, 2011Environment, Scienceanna ghelli, Bangladesh, computer models, disaster, downpours, environmental prediction, european weather forecasting center, flood forecasting technique, floods, hydrological model, meteorological agency, monitoring, monsoonal deluges, Pakistan, peter Webster, rainfall, terrain

WASHINGTON — Five days before intense monsoonal deluges unleashed vast floods across Pakistan last July, computer models at a European weather-forecasting center were giving clear indications that the downpours were imminent. Now, a new scientific study that retrospectively examines the raw data from these computer models, has confirmed that, if the information had been processed, forecasters could have predicted extremely accurate rainfall totals 8-10 days beforehand.

The study also finds that the floods themselves could have been predicted if this data, which originated from the European Centre for Medium-Range Weather Forecasting (ECMWF), had been processed and fed into a hydrological model, which takes terrain into account. (more…)

Signs of Climate Change

By ShamsJuly 24, 2007Environmentclimate changes, floods, Nature

Something is Changing……Flood killed more than 7000 people world-wide last year. In recent weeks heavy rainfall in China killed over 400 and more than 700 have been killed in South Asia by flooding. This year’s flood in Britain is an event that can stastisticalls occur in every 30 to 50 years. But the flood in […]

Tag Archives: floods

A Better Way to ID Extreme Weather Events in Climate Models

Pakistan Floods Last Summer Could Have Been Predicted

Signs of Climate Change