This lesson incorporates techniques and experimental designs used by researchers during the Southern Ocean Diatoms PolarTREC expedition and during post-expedition laboratory analysis. This guided inquiry lesson provides students the opportunity to explore photosynthesis and primary productivity using techniques to measure chlorophyll levels.
Objectives
SWBAT:
1. Use models to predict chlorophyll levels in the global oceans
2. Identify
Understanding Physical and Chemical Parameters of Ocean Water Using CTD Profiles
Overview
A focus of the PolarTREC Southern Ocean Diatoms expedition was to collect water samples and physical profile data using oceanographic technology. Oceanographers rely on the real-time data transferred from the water column to the ship-based computers using a CTD sensor. The CTD measures conductivity (salinity), temperature and depth
Rachel Potter presents her research on the use of radar to measure surface currents in the top 2 m of the water column in the Chukchi Sea. The information gained from her research allows her to determine where water is going and how fast it is flowing, which can aid in issues of search and rescue, contaminant spills, marine navigation
In this video adapted from KUAC-TV and the Geophysical Institute at the University of Alaska, Fairbanks, learn how one-celled organisms in permafrost may be contributing to greenhouse gas levels and global warming. Investigate how soil microbes, once thought to be dormant in cold temperatures, may actually be actively decomposing organic matter throughout the Alaskan winter and contributing significant amounts of
Local news interviews PolarTREC teacher Nell Herrmann about her expedition to Palmer Station, Antarctica. The take a visit to her classroom as well. Video and written article are included.
PolarTREC teacher Juan Botella is interview by a local news station about his work on the NB Palmer. Juan discusses ocean circulation and changes affecting marine organisms. Video and article included.
Do you wonder what Earth's Polar Regions are like? Where do polar bears live? Where do penguins swim? Why does the Sun never shine in winter in the Arctic? Why does aurora occur near the Earth’s Poles? How big are the Earth’s ice caps, and are they changing? The Earth’s Polar Regions are hosts to unique phenomena and ecosystems –