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  1. What are the differences between GPW, GRUMP and Landscan?

  2. Why does Egypt look different than the rest of northern Africa in the population count and density rasters?

  3. I am participating in a research study and am in need of population density maps for select countries in Africa and Asia. Can your organization provide me with such maps?

  4. What is the difference between PLACE I and PLACE II?

  5. What is the reason that an EPI was established as a complement to the ESI?

  6. What is the reason that an EPI was established as a complement to the ESI?

  7. I'm studying the Yangtze river flood (July-August 1998) and I need a detailed map of this area of China. I will grateful if you help me to find it.

  8. I have successfully downloaded the GPW global datasets for the years 1990, 1995 and 2000. I would like to know if it is advisable to compare datasets of different years in order to assess changes in population densities and therefore migration patterns, or if there are constraints that hinder such operation.

  9. What is the difference between PLACE II and PLACE III?

  10. How does GPWv4 compare to previous versions of GPW?

  11. How do I get GPW data into GRASS?

  12. What is SEDAC?

  13. What do the numbers "mean?"  That is, if Uganda's value is 0.65, does that mean that on a scale of 1-4 (1 being the least) that Uganda is very unlikely to be exposed to the 6 hazards you describe?

  14. How can I access the 1980 and 1990 Census, STF3a files?

  15. Will SEDAC develop other similar regional collections?

  16. What is the projection that the Census use for its ArcInfo files?

  17. I was interested in obtaining a Geographic Correspondence file, particularly Block Group to Block, for every state, containing allocation factors for Population, Land Area & Housing Units. Is it possible to obtain these .csv files directly from you?

  18. I am looking for the population and the surface area (in square kilometers) for several cities throughout the globe.  I found several datasets available in GRUMP, but I didn't find anything with both population and surface area.

  19. I am a graduate student. I am interested in all the chinese information and maps at your website and trying to design a small project for my class. But I find there are no information about the map projection. The administrative Region map projection is different from that of the Fundamental Maps.

  20. How do I create a Treaty Status Matrix?

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