[TZGISUG] global 30m land cover dataset

[Anna Estes]

Hi All,

Well, I am finally in a position to answer Howard's question. The data 
were a little difficult to get hold of, but I finally did, and have had 
a look. Tanzania is covered by about 5 tiles, each of which is a 25-40mb 
download, zipped (contrary to what the site says about 10mb downloads). 
You have to request the data, then it takes several days for them to 
approve the request, after which they will send your instructions to 
download via ftp (keep an eye on your spam filter, as this is where all 
of my communications from them went). Unfortunately, the first ftp login 
information they gave me did not work, and I was unable to get anyone to 
respond to my request to send new information. So I created another 
account and requested the data again, and this time the ftp information 
worked, and I successfully downloaded the data. I have only summarily 
looked over one of the tiles so far (for the Maasai Steppe area), but I 
can say, that like most global products, it does savanna very poorly 
indeed. Most wooded areas, even with I would say 30+ percent cover, it 
is classifying as grassland in the areas I've spot-checked. On the other 
hand, it seems to be doing at least a reasonable job with even 
small-scale agriculture in those same areas. So I guess how useful these 
classifications may be to you will depend on what you are hoping to get 
out of them.

If you do want to download, go to the site and click on the Download 
link in the upper right of the screen, and there it will show you all 
the tiles and you can request the ones you want. There also seems to be 
a shapefile you can download that shows all the tiles.

All the best,

Anna

On 10/4/2014 12:23 PM, Howard Frederick wrote:
> Anna, this looks like a great set of data - but obviously a huge 
> download! What sort of total MB are you looking at for Tanzania?
>
> On 3 October 2014 23:02, Anna Estes via TZGISUG 
> <tzgisug at lists.habari.co.tz <mailto:tzgisug at lists.habari.co.tz>> wrote:
>
>     Hi Everyone,
>
>     Please see the following announcement:
>
>     Dear friends:
>     On the Sept 22, our 30 meter global land cover data sets,
>     GlobeLand30, had been handed over by China to United Nations to
>     support the globl climate change studies and sustanable
>     develeopment.Now you can view and get the data from the
>     websites(glc30.tianditu.com <http://glc30.tianditu.com> or
>     www.globallandcover.com <http://www.globallandcover.com/>). Here
>     are some news reports.
>
>     http://sustainabledevelopment.un.org/index.php?page=view&type=12&nr=1058&menu=1556
>     http://unstats.un.org/unsd/GlobeLand30.htm
>     http://www.un.org/News/Press/docs/2014/sgsm16170.doc.htm
>
>     I hope this will contribute to the global research data
>     infrastructures supporting biodiversity and ecosystem sciences. I
>     am looking forward to discuss with you on future collaboration.
>     Best regards
>     Chen Jun
>     ISPRS president/ GEO SB-2 co-corrdinator
>     2014/9/29
>
>     I can't speak to the accuracy of this product, or even how it was
>     created, as I am just trying to download the tiles for TZ myself,
>     but I thought some of you might be interested in taking a look. It
>     has cover products for both 2000 and 2010, so if it is a decent
>     product, it could be very useful.
>
>     Download tip: When entering in the tile numbers you would like to
>     download, please note that it is case sensitive.
>
>     All the best,
>
>     Anna
>
>
>     _______________________________________
>     TZGISUG mailing list TZGISUG at lists.habari.co.tz
>     <mailto:TZGISUG at lists.habari.co.tz>
>     List Info: http://mail.habari.co.tz/mailman/listinfo/tzgisug
>     Web Site: http://www.tzgisug.org
>     Facebook: https://www.facebook.com/tzgisug
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.habari.co.tz/pipermail/tzgisug/attachments/20141018/0df59837/attachment.html>