Category Archives: Hydrology

Soil Moisture retrieval from satellite SAR imagery

By Keith Morrison Soil moisture retrieval from satellite synthetic aperture radar (SAR) imagery uses the knowledge that the signal reflected from a soil is related to its dielectric properties. For a given soil type, variations in dielectric are controlled solely … Continue reading

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Can the use of CCTV images improve urban flooding forecasts?

By Sanita Vetra-Carvalho Urban flooding can result from intense rainfall, flash floods, coastal floods or river floods, the same as in rural areas. However, in cities, unlike in rural areas, there is very little open soil available for water storage … Continue reading

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HEPEX: a community of research and practice to advance hydrologic ensemble prediction

By Hannah Cloke Although formal funded societies and projects can be very important in advancing research and improving how science is used, the unfunded voluntary community initiative of HEPEX has been one of the most important networks that I have … Continue reading

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THE BRAVE PROJECT – Annual meeting, January 2017, Ghana

By Galine Yanon – Walker Institute The overall objective of the BRAVE project is to quantify the impacts of climatic variability and change on groundwater supplies from low storage aquifers in Africa. More than 40 institutions from Burkina Faso, Ghana … Continue reading

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Lakes from space

By Laura Carrea For the first time satellite technology has been used to make a census of global inland water cover. A number of 117 million lakes, reservoirs and wetlands of area >0.002 km2 have been found summing up to a … Continue reading

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UK drought monitoring and forecasting

By Laura Baker After what feels like a pretty wet start to the year, it may seem strange to be talking about drought (although admittedly the warm weather over the last couple of weeks should help!). But in spring 2012, … Continue reading

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A month’s worth of rain …

By Ben Harvey Phrases like a month’s worth of rain fell in just one day are often seen in media reports of extreme precipitation. But what does this statistic actually mean? How rare is it to see a month’s worth … Continue reading

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Understanding Summer Flash Flooding

By Adrian Champion ‘Flash flooding’ is flooding that only lasts between a few hours and a day and typically has very little warning. There are many causes of flash flooding, from the meteorological conditions that lead to the rainfall that … Continue reading

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A PhD student’s overview of the European Geosciences Union (EGU) General Assembly 2016

By David Flack Last week (18 – 22 April) 13,650 scientists from 109 countries descended upon Vienna for the European Geosciences Union (EGU) general assembly. This includes a range of different disciplines, not just those associated with meteorology and hydrology, … Continue reading

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Is it possible to predict inter-annual changes in terrestrial water storage at regional scales?

By Marie-Estelle Demory Our results say yes! It is possible to predict changes in terrestrial water storage, when the signal that drives the changes is strong enough. Here is an explanation. The hydrological cycle is a fundamental link between components of … Continue reading

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