Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Measuring snow persistence can help predict streamflow

08.05.2018

With warming climates around the world, many regions are experiencing changes in snow accumulation and persistence. Historically, researchers and water managers have used snow accumulation amounts to predict streamflow, but this can be challenging to measure across mountain environments.

In a new study, a team of researchers at Colorado State University found that snow persistence -- the amount of time snow remains on the ground -- can be used to map patterns of annual streamflow in dry parts of the western United States. The ultimate goal of this research is to determine how melting snow affects the flow of rivers and streams, which has an impact on agriculture, recreation and people's everyday lives.


Abnormal snow conditions in the San Juan Mountains near Red Mountain Pass, January 2018.

Credit: John Hammond/Colorado State University

Scientists said the findings may be useful for predicting streamflow in drier regions around the world, including in the Andes mountains in South America or the Himalayas in Asia.

The study was published in Water Resources Research, a journal from the American Geophysical Union.

John Hammond, a doctoral student in the Department of Geosciences at CSU and lead author of the study, said the research is the first of its kind to explicitly link snow persistence and water resources using hard data. Similar research has only been conducted using computer-generated models.

The research team examined how snow and changes in climate relate to streamflow measurements for small watersheds across the western United States, using data from MODIS, a satellite sensor, and from stream gauging stations operated by the U.S. Geological Survey. They studied mountainous regions with varying climates in the western United States, Cascades of the northwest, the Sierras and the northern and southern Rockies.

Stephanie Kampf, associate professor in the Department of Ecosystem Science and Sustainability and study co-author, said the snow persistence data is particularly useful in dry mountain regions.

"If we look at how increases in snow relate to annual streamflow, we see basically no pattern in wet watersheds," she said. "But we see a really strong increase in streamflow with increasing snow persistence in dry areas, like Colorado."

CSU researchers also explored snow persistence in middle to lower elevations, which are often ignored in snow research, said Hammond.

"Half of the streamflow for the Upper Colorado River Basin came from a persistent snowpack above 10,000 feet," he said. "The snow-packed areas above 10,000 feet are really small and are also very isolated across the West. The middle to lower elevations don't accumulate as much snow, but they cover much more area."

Streamflow in the Upper Colorado River Basin showed a reliance on snow persistence in these lower elevation areas, according to the study. Researchers said that this highlights the need to broaden research beyond the snow at high elevations, to not miss important changes in lower-elevation snowpack that also affect streamflow.

Mary Guiden | EurekAlert!
Further information:
https://warnercnr.source.colostate.edu/measuring-snow-persistence-can-help-predict-streamflow/
http://dx.doi.org/10.1002/2017WR021899

More articles from Earth Sciences:

nachricht Massive impact crater from a kilometer-wide iron meteorite discovered in Greenland
15.11.2018 | Faculty of Science - University of Copenhagen

nachricht The unintended consequences of dams and reservoirs
14.11.2018 | Uppsala University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Purdue cancer identity technology makes it easier to find a tumor's 'address'

16.11.2018 | Health and Medicine

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>