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David Shultz

Aerial view of snowdrifts at a lake in the northern foothills of the Brooks Range in Alaska
Posted inResearch Spotlights

A Census of Snowdrifts in Northern Alaska

by David Shultz 2 December 20208 February 2023

Snowdrifts prove less ephemeral than they might seem, occurring in the same places year after year.

A farm field in southern Alberta, Canada, is irrigated
Posted inResearch Spotlights

Can Satellites Fill Gaps in Agricultural Water Monitoring?

by David Shultz 1 December 202020 October 2021

Past studies that have estimated irrigation water usage based on satellite remote sensing have had large uncertainties that could hamper effective water management.

The Alaknanda River, seen from stream level, flows among mountains in northern India.
Posted inResearch Spotlights

Tracking Trace Elements in the Ganga River

by David Shultz 16 October 202016 February 2022

Levels of dissolved trace and heavy metals, which can be toxic, are highly variable across the river basin, concentrating in urban areas with high pollution but diluted by inflow from tributaries.

A fish jumps out of the water as it heads upstream
Posted inResearch Spotlights

How River Capture Affects the Evolution of Aquatic Organisms

by David Shultz 28 September 202030 March 2023

River basins are dynamic environments that are always changing and reorganizing under geologic forces. New research investigates how this shape shifting influences aquatic speciation and extinction.

A cloudy mountain scene in southern France
Posted inResearch Spotlights

Regional Sensitivities Strongly Affect Modeled Climate Extremes

by David Shultz 22 September 202022 February 2023

Analysis of temperature and precipitation extremes in two generations of CMIP climate models revealed similarities in regional climate sensitivities, contrasting with divergent global sensitivities.

Satellite imagery showing a dust cloud spanning the tropical North Atlantic on 20 June 2020
Posted inResearch Spotlights

Trans-Atlantic Dusts May Not Enrich Amazon as Much as Thought

by David Shultz 16 September 20202 November 2021

New research indicates that nutrient loads delivered to South American ecosystems by dust originating in Africa are far lower than suggested in previous studies.

A close up image of a snowflake
Posted inNews

New Tool Quantifies and Predicts Snow Droughts

by David Shultz 31 August 202019 October 2021

A new metric for calculating snow water equivalence relies on three methodologies: modeling, satellite imagery, and direct observation.

Green-hued water laps the shoreline at a beach on Lake Erie
Posted inResearch Spotlights

Remote Sensing of Algal Blooms Can Improve Health and Save Money

by David Shultz 27 August 20206 June 2022

Using satellites to detect cyanobacterial algal blooms can foster faster decision-making that reduces harm to public health as well as associated costs.

Aerial view of a small lake surrounded by forest
Posted inResearch Spotlights

The Lasting Legacy of Phosphorus Buried in Lakes

by David Shultz 12 August 202026 January 2023

Research at an experimental lake suggests that phosphorus inputs from runoff may affect the health of aquatic ecosystems long after external additions of the nutrient are reduced.

A dust storm approaches the outskirts of Phoenix in 2011.
Posted inResearch Spotlights

Dust Storms Associated with Increase in Critical Care Visits

by David Shultz 11 August 202029 September 2021

Fine particulate matter from dust storms can exacerbate respiratory diseases, and now scientists have shown that critical care hospital visits spike during and after such events.

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Decoding Crop Evapotranspiration

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