The mission of AGIC is to coordinate the development and management of geographic information in Arizona.
AGIC promotes the use of GIS and related technologies to address problems, develop plans, and manage the natural, economic and infrastructure resources of the state.
The vision of AGIC is to facilitate the provision of credible, timely and accurate geographic information for widespread use by decision-makers and the citizens of Arizona.
Monday, June 27, 2016 - 11:37am
Given such a long history of human map-making, it is perhaps surprising that it is only within the last few hundred years that north has been consistently considered to be at the top. Early European maps had east at the top (orientation is derived from orient, or east); Islamic maps faced south. When maps changed to north-at-top is difficult to pinpoint, but it came relatively late in history.
Friday, June 17, 2016 - 2:54pm
A new online atlas of artificial sky brightness is now available, based on updated light pollution data published last week. (There’s also a 3D globe version that may not work in all browsers.) Light pollution, as I’ve blogged before, is the bane of professional and amateur astronomers alike, obscuring fainter objects and interfering with observations, both naked-eye and through telescopes. As the article in Science Advances puts it, “This atlas shows that more than 80% of the world and more than 99% of the U.S. and European populations live under light-polluted skies. The Milky Way is hidden from more than one-third of humanity, including 60% of Europeans and nearly 80% of North Americans.” [Rumsey Map Center]