Tagged: modelling

Take a walk on the polluted side: air pollutant exposure on busy roads - Infrequently Asked Questions

Lynley Hargreaves Sep 01, 2017

Originally posted on Royal Society Te Apārangi’s Past and Future series where, as part of 150th anniversary celebrations, early career researchers are invited to share discoveries in their fields from days gone by or give us a glimpse into where their research may take us in the future. By Dr Lena Francesca Weissert, Research Fellow in Chemical Sciences at University … Read More

Using models to understand and protect our braided rivers - Waiology

Waiology Jun 23, 2014

By Murray Hicks Braided rivers, defined by networks of channels that are forever changing and shifting, are iconic features of the New Zealand landscape. Their existence depends on abundant supplies of gravelly sediment and frequent disturbance by floods and freshes. They also support unique communities of in-stream and terrestrial organisms (fish and birds) that have adapted to this dynamic physical … Read More

Un-muddying the waters: Series conclusion - Waiology

Waiology Dec 20, 2013

By Daniel Collins After 10 weeks and 26 articles, Waiology’s series on water quality draws to a close. We have heard from 26 different contributors from 10 different organisations. Articles spanned topics from states and trends in observational data to diverse management solutions. There were some glaring omissions, for which I apologise, but not all requests translated into articles … Read More

How much dairying is too much in terms of water quality? - Waiology

Waiology Dec 17, 2013

By Daniel Collins On 21 November the Parliamentary Commissioner for the Environment, Jan Wright, released her second report on water quality. It warned that business-as-usual dairy expansion by 2020 would leave our lakes and rivers more degraded than they are now, even with improved mitigation. I’d now like to re-cap what the report concluded, how it got there, … Read More

Managing nitrogen in the Lake Taupo catchment - Waiology

Waiology Nov 13, 2013

By Bill Vant and Jon Palmer More than 10 years ago, the Waikato Regional Council became concerned about the effects of increasing catchment loads of nitrogen on the water quality of Lake Taupo. Calculations showed that most (>90%) of the manageable nitrogen entering the lake came from areas of pasture in the catchment. A variation to the Waikato Regional … Read More

Map: Projected effects of climate change on New Zealand freshwaters - Waiology

Waiology Nov 27, 2012

By Daniel Collins Maps are helpful tools in communicating and understanding the potential implications of climate change. We have national maps of projected changes in temperature that show faster warming in the north, and in precipitation that show more rain in the south and west and less in the north and east. We also have national maps of … Read More

The big hydrological OE in New Zealand - Waiology

Waiology Aug 10, 2012

Guest post By Jasper Hoeve, visiting student from the University of Twente, Netherlands I am a third year Civil Engineering student at the University of Twente, the Netherlands. As part of our studies, we have to do an internship at a company relevant to our field. I thought this was a good excuse to travel to the other side of … Read More

Predicting river flows in ungauged catchments, from New Zealand to the world - Waiology

Waiology Jul 13, 2012

By Ross Woods Our knowledge of the water cycle is imperfect – for example we don’t have data for all rivers across the landscape, and yet so often we want river flow information for resource and hazard management purposes. In the absence of direct data, then, we turn to models and seek to make hydrological predictions in these ungauged … Read More

As seen on TV - Waiology

Waiology Nov 01, 2011

By Daniel Collins ‘Water. It turns the turbines that power our country, and it irrigates the fields that power our economy.’ With that, John Watt introduced an episode of ‘Ever Wondered?’ about water. Three NIWA scientists, myself included, were among those who featured in the half-hour show. The thrust of the episode was to examine how much water … Read More

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