Fresh Water in the Arctic -- Changing Planet

The Arctic Ocean, sensitive to climate change, is experiencing significant changes in freshwater and saltwater balance. Scientists like Rick Krishfield monitor these changes using buoys and innovative tools like the Ice Tethered Profiler. The Beaufort Gyre plays a crucial role in trapping freshwater, which, if released excessively, could impact global climate by affecting the Gulf Stream. Despite advancements, Arctic research remains challenging. Data shows a dramatic increase in freshwater, raising concerns about potential climate impacts.

What makes the Arctic Ocean particularly sensitive to climate change?

• Its high salinity levels

• Its large size compared to other oceans

• Its unique balance of fresh and saltwater

• Its proximity to the equator

What is the primary focus of Rick Krishfield's research in the Arctic?

• Mapping the Arctic ice sheets

• Documenting water temperatures and salinity

• Measuring atmospheric CO2 levels

• Studying polar bear behavior

How does the Beaufort Gyre affect the climate of the northern hemisphere?

• By increasing the salinity of the ocean

• By trapping and releasing freshwater

• By accelerating ocean currents

• By melting polar ice caps

What is the potential consequence of the Beaufort Gyre releasing too much freshwater?

• A rise in sea levels

• Increased ocean salinity

• A warmer climate in the northern hemisphere

• A barrier preventing Gulf Stream heat release

What role does the freshwater layer play in the Arctic Ocean?

• It increases ocean salinity

• It acts as a blanket, insulating the ocean

• It accelerates ice melting

• It prevents ocean currents

What is the purpose of the Ice Tethered Profiler (ITP) developed by Woods Hole?

• To track polar bear movements

• To measure atmospheric temperatures

• To gather data on water temperature and salinity

• To map the ocean floor

Why is it challenging to conduct research in the Arctic year-round?

• High levels of pollution

• Lack of funding

• Political restrictions

• Extreme weather conditions

What has been observed in the Arctic Ocean over the last 12 years?

• An increase in polar bear population

• A dramatic accumulation of freshwater

• A decrease in freshwater levels

• A stabilization of ocean currents

What is the significance of the redder contours in the data collected by the ITP?

• They show areas with more freshwater

• They indicate higher salinity

• They represent warmer water temperatures

• They mark regions with less ice

What is the current state of the Arctic Ocean according to scientists?

• Decreasing in temperature

• Increasing in salinity

• Out of balance and unstable

• Stable and balanced