Try this link Suzanne!

http://www.lib.berkeley.edu/BIOS/data_environment.html

The LCA Digital Commons Project at the National Agricultural Library provides food, biofuel, and other bioproduct data for use in Life Cycle Assessment analysis. It is available at: http://www.lcacommons.gov/.

There is a registry of research data repositories: check out http://www.re3data.org/browse/by-subject/

Your university also has one: http://repositories.lib.utexas.edu/

and it explicitly allows posting data sets (http://www.lib.utexas.edu/datamanagement/ut_libraries).

And of course you can post data sets here on RG.

I'm not an envt. researcher per se and I'm sure neither of your geography nor your special interest, but I currently post GIS shape files on sharegeo.ac.uk and will post geoJSON files on github - if any of that interests you, then more on

http://blog.zolnai.ca

There is not "THE" repository, rather there are a number of repositories you might use ranging from general purpose repositories, e.g. http://datadryad.org/, to domain specific repositories, e.g. www.pangaea.de

In some cases, Journals provide their authors with a list of recommended repositories. For instance, this is the case of the Journals adopting the JDAP http://datadryad.org/pages/jdap

In Australia there is Research Data Australia which lists and links to over 93,000 data sets - you can browse by subject

http://researchdata.ands.org.au/browse

Try the Sustainable Environment Actionable Data archive: http://sead-data.net/

Thank you everyone! I really appreciate all of these answers. I've compiled each of these sites and choose where to post my data in the near future. This really helps.

Artur - thanks for reminding me of the UTexas repository...I vaguely remember hearing about and had forgotten. That may be the most logical place for my own datasets - especially since this particular set is based on a Texas case study.

For my international datasets, I'll probably look around a bit more to pick an appropriate place.

Very best and thanks to everyone who contributed an answer!

Suzanne

Perhaps a little late here but here are a few more enviro sources

http://www.cakex.org/

http://databasin.org/

http://freegisdata.rtwilson.com/

http://data.un.org

You could also try the Earth System Science Data (ESSD). 

'Earth System Science Data (ESSD) is an international, interdisciplinary journal for the publication of articles on original research data(sets), furthering the reuse of high (reference) quality data of benefit to Earth System Sciences. The editors encourage submissions on original data or data collections which are of sufficient quality and potential impact to contribute to these aims.'

http://www.earth-system-science-data.net/

try ShareGeo Open

http://sharegeo.ac.uk

http://figshare.com/ is enjoying increasing popularity, but there are lots of alternatives. "Publishing datasets" may not be the right metaphor - as eloquently discussed in  https://www.jstage.jst.go.jp/article/dsj/12/0/12_WDS-042/_article - but the term is likely here to stay...

I think these days Mendeley.com is the most popular public repository which can be use.

For a similar discussion, see https://www.researchgate.net/post/How_to_locate_dataset_for_published_papers .

A further service is https://zenodo.org/

Here: https://data.world/kietnv

Zenodo, was mentioned by Michael Lösler. Here are some more details:

• File sizes up to 50 GB
• Provides automated DOI (Digital Object Identifier) to provide persistent links to the resources you upload
• Links to https://orcid.org/
• You can create communities (in effect folders)
• Integrates with GitHub
• Makes referencing a resource easy
• Metadata handling
• Supports closed data
• Funded by the European Commission and other stable/strong stakeholders
• Open for all and many other good policies

On the downside the system does not integrate with Researchgate in any way except for when you use documents stored there as a reference in your articles.

just to ask sample published dataset in social sciences (psychology). Please forward.

Thanks in advance.