Here is an interesting post written by Joseph Kerski on spatial data after the ESRI User Conference this past July.
Atlas of Urban Expansion
The main objective of this Atlas of Urban Expansion is to increase understanding and help residents, policy makers, and researchers around the world come to terms with the expected global urban expansion in the coming decades. The Atlas in book form introduces the project and presents two sets of full-color maps and a set of raw data tables. The first map section contains pairs of urban land cover maps from circa 1990 and 2000, representing a global sample of 120 cities. The second map section includes composite maps of a global representative sample of 30 cities, showing the historical expansion of their urbanized areas from 1800 to 2000. In both sections, the maps shown are paired with numerical and graphical data, making it possible to compare cities in terms of their metric values on key attributes of urban expansion. The third section contains four extensive tables of urban, national, and regional data for each of the 120 cities.
Data and images from the Atlas of Urban Expansion are available for download on the companion website,
Section 4: Geographic Information System (GIS) Data for Cities
The GIS data used in the analysis and in making the maps can be downloaded from the website. GIS software, such as ArcGIS, is required to view these data.
For each city in the 120 city sample, these data include:
1.two urban land cover maps, one circa 1990 and one circa 2000;
2.the administrative boundary shapefile;
3.two maps of the urban landscape categories, one circa 1990 and one circa 2000;
4.the map of new development categories (infill, extension, leapfrog).
For each city in the 30 city historical sample, these data include the urbanized area shapefiles for each time period.
Use of data should include the following citation: Angel, S., J. Parent, D. L. Civco and A. M. Blei, 2010. Atlas of Urban Expansion, Cambridge MA: Lincoln Institute of Land Policy, online at http://www.lincolninst.edu/subcenters/atlas-urban-expansion/.
The State of Oregon’s navigatOR program is pleased to announce the new generation of the Oregon Imagery Explorer. In concert with the Oregon Explorer team, we hired Esri Consulting Services to develop the new site.
You will find much of the same functionality from the old Imagery Explorer site, in addition to many new features and data. Imagery Explorer now provides streaming and download access to five generations of statewide aerial imagery: 1995, 2000, 2005, 2009, 2011, with the addition of 2009 and 2011 Color Infrared, Pictometry orthophotos in selected urban centers, bare earth hillshade, and other products derived from available Lidar data. The new functionality uses either a swipe tool or transparency overlay tool to compare imagery from any available year to another year, or to the bare hillshade.
In addition to the Imagery Explorer Application, the same imagery and Lidar-derived products can be accessed through web services in your web or desktop client of choice, allowing you to access the data without having to download and store it.
A detailed WRI map set of world water stress and risks has just been released:
http://aqueduct.wri.org/atlas with the global datasets available for download.
Article describing the map and the reasons behind creating it.
See http://spatialreserves.wordpress.com/2013/01/13/abu-dhabi-environment-agency-launches-enviro-portal/ .
"As we state in our book The GIS Guide to Public Domain Data, areas around the world where not long ago it was very difficult for data users to obtain data are now opening up some of their data archives. One example is in Abu Dhabi, whose government is an extensive user of GIS technology. The Environment Agency Abu Dhabi recently launched an "Enviro-Portal", announced during the Esri Middle East and Africa User Conference on GIS Technology solutions at the Abu Dhabi National Exhibition. This portal (http://enviroportal.ead.ae) offers access to environmental data such as geology, soils, flora, fauna, marine habitats, and protected zones within Abu Dhabi.
Some of the links offer historical data back to the 1990s. The site is available both in Arabic and in English. The "browse" function offers a straightforward way of offering the data, similar to a view of folders on one's own computer. The metadata on the site is quite useful, and the data areavailable in a variety of formats, depending on the data type, from design files to shapefiles and geodatabases. On the "Download" tab, data users can download data by providing an email address. The site also offers a map gallery, from which the data user can search by theme but it also offers very helpful searching by polygon, line, or point buffer, shown in the image below.
As with any data portal, unique features of this portal require the data user to spend some time getting comfortable with the features and options. However, the wealth of data themes here makes it worth spending time with, and for a fascinating and rapidly changing part of the planet."
There are several job openings at the Minnesota Population Center for Research Associates/Research Fellows to work on IPUMS-CPS, IHIS, and/or ATUS-X.
To obtain more information and download position announcements, please visit our website at https://www.pop.umn.edu/about/employment-opportunities.
New IPUMS and other Minnesota Population Center Data
From NPR's Science Friday, check out this video about how the GIS layer, Blue Marble is created.
"There's artistry to creating the world, according to Rob Simmon, art director of NASA Earth Observatory. NASA's collection of Earth-from-space imagery dates back to the Apollo 8 mission, when astronauts snapped a picture of Earth rising over the moon. Simmon and NASA scientist Gene Feldman explain how the modern "Blue Marble" images are made and how they relate to scientific study of the Earth. (Credits: images courtesy of NASA) Viewed 15072 times. See More Videos
NASA’s iconic images of Earth from space date back to the late 1960s--with snapshots taken by Apollo astronauts. The modern “blue marble” images are captured by machines and they’re not photos--they’re datasets collected by instruments aboard satellites and then translated into imagery here on the ground."
Press releasewith links to where to download the data:
PASADENA, Calif. – NASA and Japan released a significantly improved version of the most complete digital topographic map of Earth on Monday, produced with detailed measurements from NASA's Terra spacecraft.
The map, known as a global digital elevation model, was created from images collected by the Japanese Advanced Spaceborne Thermal Emission and Reflection Radiometer, or ASTER, instrument aboard Terra. So-called stereo-pair images are produced by merging two slightly offset two-dimensional images to create the three-dimensional effect of depth. The first version of the map was released by NASA and Japan's Ministry of Economy, Trade and Industry (METI) in June 2009.