From healthmaps@home.com Fri Nov 30 07:45:13 2001 Received: from mailscan2.cac.washington.edu (mailscan2.cac.washington.edu [140.142.33.16]) by lists.u.washington.edu (8.11.6+UW01.08/8.11.6+UW01.10) with SMTP id fAUFjCn23760 for ; Fri, 30 Nov 2001 07:45:12 -0800 Received: FROM mxu2.u.washington.edu BY mailscan2.cac.washington.edu ; Fri Nov 30 07:45:11 2001 -0800 Received: from femail44.sdc1.sfba.home.com (femail44.sdc1.sfba.home.com [24.254.60.38]) by mxu2.u.washington.edu (8.11.6+UW01.08/8.11.6+UW01.10) with ESMTP id fAUFjB428432 for ; Fri, 30 Nov 2001 07:45:11 -0800 Received: from c501522d ([24.19.225.248]) by femail44.sdc1.sfba.home.com (InterMail vM.4.01.03.20 201-229-121-120-20010223) with SMTP id <20011130154505.NZXG21705.femail44.sdc1.sfba.home.com@c501522d> for ; Fri, 30 Nov 2001 07:45:05 -0800 From: "Richard Hoskins" To: "WAPHGIS" Subject: WAPHGIS: New global population density dataset Date: Fri, 30 Nov 2001 07:45:05 -0800 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C17972.ED306910" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C17972.ED306910 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This is from another list concerning the gridded population density world-wide datasets I sent URLs around to you a few days ago. Dick Hoskins ---------------------------------------------------------------------------- ----- I just wanted to add a few points of clarification on the posting about the population datasets. There are two: Landscan and Gridded Population of the World (GPW version 2). Landscan is a set of grids that estimate population for 30 arc-second grid cells based on a series of inputs (administrative population, slope, land cover, night light intensity, and road density). Landscan was produced by Oak Ridge National Laboratory (ORNL) and is distributed by CIESIN at: http://sedac.ciesin.columbia.edu/plue/gpw/landscan/ Oak Ridge has a page describing the project at: http://www.ornl.gov/gist/projects/LandScan/SIMPLE/smaps.htm CIESIN had no part in creating the Landscan dataset, we just distribute it for Oak Ridge. Gridded Population of the World (GPW), version 2, is a set of grids which estimate population, land area and population density based soley on administrative population data. GPW, version 2, was produced by CIESIN and is a new version of what used to be known as the 'Global Demography Project' or GPW. The grids are at a resolution of 2.5 arc-minutes. These data are available via: http://sedac.ciesin.columbia.edu/plue/gpw/ We consider these two datasets complimentary, there is a web page that compares the two so that you can decide which is most appropriate for your use, see: http://sedac.ciesin.columbia.edu/plue/gpw/landscan/specs.html Finally, there is a list of other data that CIESIN distributes at: http://www.ciesin.columbia.edu/download_data.html You should be aware that I do work for CIESIN. If you have any questions, feel free to contact me. Regards, Greg ---------------------------------------------------------------------- Gregory Yetman Center for International Earth Science Information Network (CIESIN) Columbia University URL: http://www.ciesin.columbia.edu/ e-mail: gyetman@ciesin.columbia.edu tel: (845) 365-8982 ------=_NextPart_000_0034_01C17972.ED306910 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

This is from another list concerning the gridded = population=20 density world-wide datasets I sent URLs around to you a few days=20 ago.

Dick=20 Hoskins

--------------------------------------------------= -------------------------------

I=20 just wanted to add a few points of clarification on the posting = about
the=20 population datasets. There are two: Landscan and Gridded = Population
of=20 the World (GPW version 2).

Landscan is a set of grids that = estimate=20 population for 30 arc-second grid
cells based on a series of inputs=20 (administrative population, slope, land
cover, night light intensity, = and=20 road density). Landscan was produced by
Oak Ridge National = Laboratory=20 (ORNL) and is distributed by CIESIN at:

http://sedac.ciesin.columbia.edu/plue/gpw/landscan/

Oak=20 Ridge has a page describing the project at:

http://www.ornl.gov/gist/projects/LandScan/SIMPLE/sma= ps.htm

CIESIN=20 had no part in creating the Landscan dataset, we just distribute = it
for Oak=20 Ridge.

Gridded Population of the World (GPW), version 2, is a set = of=20 grids which
estimate population, land area and population density = based soley=20 on
administrative population data. GPW, version 2, was produced = by=20 CIESIN
and is a new version of what used to be known as the 'Global=20 Demography
Project' or GPW. The grids are at a resolution of = 2.5=20 arc-minutes.
These data are available via:

http://sedac.ciesin.columbia.edu/plue/gpw/
We=20 consider these two datasets complimentary, there is a web page = that
compares=20 the two so that you can decide which is most appropriate for = your
use,=20 see:

http://sedac.ciesin.columbia.edu/plue/gpw/landscan/sp= ecs.html

Finally,=20 there is a list of other data that CIESIN distributes at:

http://www.ciesin.columbia.edu/download_data.html

You=20 should be aware that I do work for CIESIN. If you have any=20 questions,
feel free to contact=20 me.

Regards,

Greg

------------------------------= ----------------------------------------
Gregory=20 Yetman
Center for International Earth Science Information Network=20 (CIESIN)
Columbia University
URL: http://www.ciesin.columbia.edu/
e-mai= l:=20 gyetman@ciesin.columbia.edu
tel: (845)=20 365-8982

------=_NextPart_000_0034_01C17972.ED306910-- .