The National Snow and Ice Data Center (NSIDC) has many opportunities for further exploration. Here are a few ideas to try.
- Examine the sea ice data downloaded in this lesson for variations in concentration.
- Examine sea ice in the Antarctic Regioncompare fluctuations and seasonality. Use either the online animations or access the data sets from the ftp site referred to in the chapter.
- Add wind pattern data to the sea ice data and explore relationships between these two factors.
Antarctic Sea Ice data can be also be downloaded from the NSIDC website. Antarctic sea ice is in the same directories, but it is in the "South" folders.
An important difference is when you import the Antarctic fields: the images are 316 by 332 pixels instead of the values used for the Arctic.
Google Earth software can be used for visualization of this data.
Data sets in KMZ format (for Google Earth) can be downloaded at NSIDC Data on Virtual Globes: Google Earth
Sea Ice data can be viewed and animated online using the NSIDC Sea Ice Animation Tool
Case Studies with Tool
Other EET chapters that utilize ImageJ as a tool and satellite imagery as a data source include the following:
- Annotating Change in Satellite ImagesUse time-series images to produce a map documenting land use changes in China.
- Analyzing the Antarctic Ozone HoleMeasure and graph the area of depleted ozone from Total Ozone Mapping Spectrometer (TOMS) images.
- Exploring Albedo with NASA NEO and ImageJUse ImageJ to explore and animate satellite images of albedo, snow cover, and land surface temperature downloaded from the NASA Earth Observation (NEO) Web site. Then use NEO's Image Composite Editor (ICE) to observe, graph, and analyze the relationship between these three variables.
- Measuring Distance and Area in Satellite ImagesUse ImageJ to quantify change over time in satellite images.
- Shrinking Forest - Growing ProblemProcess and measure time-series SAR images to analyze the rate of deforestation in the Amazon rainforest. Produce a color composite image showing the oldest to most recently deforested areas.
Resources and Further Information
- [link Alaska Sea Ice storyhttp://nsidc.org/cryosphere/ 'NSIDC Education and Outreach' new] page
- Alaska Sea Ice story (link down) tells the story from the point of view of a Canada goose.
- International Polar Year NASA website
- Students on IceTrip to the Arctic 2007 has journal entries, photos and movies to supplement this chapter.
Additional Reference Papers
- Bridging perspectives from remote sensing and Inuit communities on changing sea-ice cover in the Baffin Bay region - Meier, Stroeve and Gearheard, 2006
download this file (Acrobat (PDF) 245kB Jul5 07)