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This is an archive of AGU's GeoSpace blog through 1 July 2020. New content about AGU research can be found on Eos and the AGU newsroom.

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20 July 2016

Predicting the export and fate of global ocean net primary production: The EXPORTS

Earth’s carbon cycle is heavily influenced by ecological processes in the ocean. The quantification and understanding of the intricate relationships between carbon dioxide and ocean ecosystems, EXPORTS and what effects these have on the present and future conditions on Earth, is one of the greatest challenges in oceanography. One of the most important aspects that preclude the full understanding of the ocean carbon cycle is the lack of parallel measurements at a global scale; this also hinders our ability to make robust predictions in an uncertain future. The EXport Processes in the Ocean from RemoTe Sensing (EXPORTS) Science Plan was proposed to NASA in order address this knowledge gap. It aims at developing a predictive understanding of the export and fate of global ocean net primary production (NPP) and its implications to the ocean carbon cycle for present and future climates. The goal of this project is to quantify of the mechanisms that control the export of carbon from the euphotic zone as well as its fate in the underlying “twilight zone”.

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26 May 2016

New study suggests less snow, earlier snowmelt at higher elevations in warming climate

Spring snowpack, relied on by ski resorts and water managers throughout the Western United States, may be more vulnerable to a warming climate in coming decades, according to a new study.

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9 May 2016

More than half of streamflow in the Upper Colorado River Basin originates as groundwater

More than half of the streamflow in the Upper Colorado River Basin originates as groundwater, according to a new study published online today in Water Resources Research, a journal of the American Geophysical Union.

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19 April 2016

Standards dramatically advance streamflow and flood forecasting in the U.S. and elsewhere

his is a story about how water data standards, computational hard work, high-performance computing, serendipity and synergy led to an operational capability for nationwide forecasting of streamflow and flooding at high-resolution, in near-real-time. This has been evolving for several years now, but has gone into hyper-drive in just the last couple years.

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30 September 2015

Gulf Stream ring water intrudes onto continental shelf like “Pinocchio’s Nose”

Ocean robots installed off the coast of Massachusetts have helped scientists understand a previously unknown process by which warm Gulf Stream water and colder waters of the continental shelf exchange. The process occurs when offshore waters, originating in the tropics, intrude onto the Mid-Atlantic Bight shelf and meet the waters originating in regions near the Arctic. This process can greatly affect shelf circulation, biogeochemistry and fisheries.

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1 September 2015

High water tables can be a boon to crop yields

High water tables can be a bane to crop yields, compelling many farmers to drain their fields so their crops don’t drown when it rains.

But a high water table may not always be a bad thing. A new study shows it is actually a boon for some fields and during certain times of the growing season, casting light on opportunities for improving yield efficiency to meet global food demands.

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19 March 2015

Harvesting “big data” to help farmers

Scientists are using massive amounts of information about the climate, weather and land to develop new tools farmers can use to grow more food without harming the environment.

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14 January 2015

Mountain monitoring system artificially inflates temperature increases at higher elevations

In a recent study, University of Montana and Montana Climate Office researcher Jared Oyler found that while the western U.S. has warmed, recently observed warming in the mountains of the western U.S. likely is not as large as previously supposed.

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17 December 2014

New evidence for a massive flood on the Mackenzie River 13,000 years ago

The Northern Hemisphere suddenly cooled about 12,800 years ago in an event named the Younger Dryas. Scientists have debated the cause for many years. One widely-believed explanation is that the massive but long gone Lake Agassiz in central Canada rapidly flooded fresh water east down the St. Lawrence River into the northern Atlantic Ocean. That pulse of fresh water interfered with warm ocean currents and triggered the cooling.

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16 December 2014

Scientists use drones to monitor surf zone

When ocean scientists visit the beach they pack more than sunscreen and a towel – they pack drones. Researchers show in a new study that drones can be used to cheaply and accurately monitor the movement of water in the surf zone in the Gulf of Mexico. The drones provide a new way of documenting the movement of plant and animal plankton, sediments and pollutants, including spilled oil, near the shore.

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