GRIDDED Census blockgroup data.

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#318

From: Henk Meij
Date: Wed, 28 Jun 1995 00:00

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All,      ##### DO NOT USE REPLY FUNCTION #####

It's been a long time coming, but here we are.
Proof of concept. Data users read the files
"griddoc.txt" & "gridlgd.txt".
Brief summary below.

URL (or just ftp ftp.ciesin.org. cd /pub/census/usa/grid)

ftp://www.ciesin.org/pub/census/usa/grid/pall/gif

Enjoy!
-Henk (sorry for crossposts)

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Within this framework, the "Population, Land Use and Emissions" Task
(PLUE) embarked on integrating data from different sources.
Specifically, data from the US decennial census (1990) and recent
satelitte data were integrated. In the initial attempt, the focus is on
transforming census vector based data to satelitte pixel based data.
>From the US census data Total Persons and Total Housing Unit Structures
were the selected data items (from the blockgroup geography) to be
merged with the Land Cover Characteristics database (square kilometer
resolution) for the conterminous United States from the EROS Data
Center.  This land cover was derived from Advanced Very High Resolution
Radiometer (AVHRR) 1990 multitemporal satelitte data.

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From: Henk Meij <hmeij@ciesin.org>
Subject: GRIDDED Census blockgroup data.
Date: 1995/06/28
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