Snowmelt Measurement and Water Management

The video discusses the importance of snowmelt in the western U.S. water supply and introduces the Airborne Snow Observatory (ASO), which uses a spectrometer and laser altimeter to measure snowpack. This technology provides timely data for water managers, improving forecasting and understanding of mountain hydrology. Calibration and testing are conducted in locations like Yosemite. The video also highlights the challenges posed by climate change on water resources, emphasizing the need for accurate data and models to adapt to changing conditions.

What percentage of the fresh water supply in the western U.S. comes from snowmelt?

• 75%

• 85%

• 60%

• 50%

What are the two main components of the Airborne Snow Observatory?

• Barometer and Hygrometer

• Anemometer and Rain Gauge

• Spectrometer and Laser Altimeter

• Radar and Thermometer

How does the spectrometer contribute to snowmelt measurement?

• By determining sunlight absorption

• By predicting snowfall

• By calculating snow density

• By measuring snow depth

What is the primary benefit of ASO data for water managers?

• Increased snowfall

• Reduced water usage

• Improved irrigation techniques

• Accurate snowpack volume

How often does the ASO plane fly to collect data?

• Daily

• Weekly

• Monthly

• Annually

Why is Yosemite an ideal location for ASO testing?

• It is close to the ocean

• It has a large population

• It is a snowmelt-driven basin

• It has a high rainfall

What is the purpose of calibration measurements in ASO?

• To interpret data accurately

• To predict future snowfall

• To measure snow density

• To increase snowmelt

What happens to precipitation as the temperature increases?

• It freezes

• It falls as rain

• It evaporates

• It turns into snow

What is a major challenge in water management due to climate change?

• Increased snowfall

• Expanding reservoirs

• Decreased rainfall

• Shrinking water supply

Why is it important to have the best models and understanding of physical processes in water management?

• To predict weather

• To increase water supply

• To take meaningful action

• To reduce water usage