Data Policy

Data Access and Data Sharing Practices and Policies

Data Access

LTAR CORe meteorological data for WGEW are available on the NAL LTAR repository web site at  Hydrology data are available on the WGEW web site at Additional datasets are currently available upon request under the sharing practice defined below. Datasets which are currently not available via the NAL LTAR repository will be made available in or after a date to be determined.

Definitions of Data Sharing Practices and Policies

LTAR Data Products –  Data collected with monetary or logistical support from LTAR WGEW site. This includes use of any sensors, sampling equipment, vehicles, or labor from a supported investigator, student or staff.

LTAR Repository –  A web-accessible site in which LTAR data are stored for a particular site or the network as a whole. Current web address to this web application is:
Dataset Creators – People responsible for dataset design, collection, analysis and quality assurance. Dataset Creators are analogous to authors of a publication, and datasets should be cited in an analogous manner following guidelines described at

Data Sharing

All LTAR investigators and collaborators who receive LTAR support agree to:

  1. Should DOI or other standard online reference be assigned to any datasets, and how should they be assigned to continuous datasets such as meteorological observation data?  LTAR policy TBD.
  2. Share data privately within <one year>. LTAR investigators and collaborators agree to provide LTAR Data Products, including data files and metadata for raw, quality controlled and/or derived data, to LTAR data managers within <one year> of collection. By default, data values will be held in a private LTAR Repository (password-protected directory/files), but metadata will be made public and will provide full attribution to Dataset Creators.
  3. Release data to public within 2 years. LTAR Dataset Creators will be encouraged after one year to release data for public access. Dataset Creators may choose to publish or release data sooner.
  4. Request, in writing, data privacy up to 4 years. LTAR PIs will review written applications to extend data privacy beyond 2 years and up to 4 years from collection. Extensions beyond 3 years should not be the norm, and will be granted only for compelling cases.
  5. Consult with creators of private LTAR datasets prior to use. In order to enable the collaborative vision of the LTAR network, data in Private LTAR Repositories will be available to other investigators and collaborators within that LTAR site. Releasing or publishing any derivative of such private data without explicit consent from the Dataset Creators will be considered a serious scientific ethics violation.

Agricultural Research Service