Although Landsat is NASA’s most well-known satellite program, other missions are providing a wealth of information about our Earth. Aura, a satellite which was launched July 15, 2004, collects data that are used for studying the composition, chemistry and dynamics of Earth’s atmosphere, including ozone levels, air quality, and climate. At the recent American Geophysical Union conference, maps based on Aura data were presented showing the levels of Nitrogen Oxide (a precursor to ozone formation) in the eastern US.
Main Topic: Physical Geography and our changing earth. News: Contest 2, Windows Live Local, OGC WMS ISO, AAA Travel Challenge
this story offers up some information on a drought in Africa 70k years ago found through soil cores. The story also offers up an interpretation that is related to our GAW discussion on human migration.
This article from BBC News follows on today’s GAW topic Physical Geography. Just a month ago we referenced an article stating that we were losing portions of the rainforests at faster than expected rates. Today we find out it is slowing, if only there were a universal data set that everyone could use. BBC NEWS | Science/Nature | Deforestation slowing, UN says
As I have mentioned before, I see Geography as a series of relationships and as we look back through the history of Geography we see three main areas that we can use as umbrellas for the broad aspects of Geography: cartography, human geography and physical geography. Physical Geography covers the relationships within the environment around us, a broad area to be sure, but an important one in our daily lives.
Dr. Richard Aspinall discusses the role of Geography and GIS in an interdisciplinary approach to studying Land Use and Land Cover Change in an editorial in this week’s Directions Magazine. He argues that GIS and Geography are and will continue to be central to the study of land use and human interactions with the environment. He also discusses a new international program that will focus on these issues called the Global Land Project
The European Space Agency (ESA) has developed a mapping service called Kyoto-Inventory which utilizes satelllite imagery to assist in annual reporting on afforestation, refforestation, and deforestation as part of the Kyoto Protocol, which is an initiative to reduce greenhouse gases. Kyoto-Inventory was a 3-year demonstration project, and will now continue as part of a larger project called GSE-Forest monitoring. The mapping service uses satellite imagery from ERS, Landsat and SPOT to generate forest maps and monitor land cover change.
You can read about the Kyoto-Inventory forest mapping project on the ESA website
Natural hazards mapping…NASA…satellite imagery. What more do you need on Halloween night…other than candy corn.
Back in the fall of 2004 the BBC news site started a series called “Planet under pressure”. It covers alot of the important issues facing the world including global warming, pollution, and hunger.