Data Access

Access data produced by the LTAR Network

AgCROS and Products

The USDA Agricultural Research Service has established and continues to expand features, capacity, and capabilities of the Agricultural Collaborative Research Outcomes System (AgCROS; Delgado et al. 2018). AgCROS is a cloud-based integrated platform designed to eventually be a “one-stop shop” for USDA agricultural research data and metadata, along with providing access to relevant datasets from other organizational repositories. It is a growing “network of networks” that presently contains a wide variety of datasets from multiple agricultural research networks, such as: the Nutrient Uptake and Outcome Network (NUOnet), the Greenhouse gas Reduction through Agricultural Carbon Enhancement Network (GRACEnet), the Resilient Economic Agricultural Practices (REAP), the Dairy Agriculture for People and the Planet (DAPP; Dairy Grand Challenge), the Soil Health Assessment Network (SHAnet), the Agricultural Antibiotic Resistance (AgAR), and more recently the Long-Term Agroecosystem Research (LTAR) Network. By integrating data from these diverse data networks into a well-described and organized open access database, AgCROS facilitates the ease and access of research data and increases the effectiveness and collaboration among researchers.

AgCROS is a partner of the Ag Data Commons, providing public access to USDA-funded research data.

Publication describing the AgCROS effort


AgCROS Real-time Met Data Repository (GeoEvent Server)

Meteorology data is being connected in close to real time for each of the 18 LTAR sites published to the GeoEvent Server hosted on Azure Cloud”

AgCROS Database API

The AgCROS Public API gives access to the combined databases that are part of the AgCROS framework

LTAR Data in the Ag Data Commons

Ag Data Commons provides access to a wide variety of open data relevant to agricultural research. Ag Data Commons is a centralized registry for USDA-funded data already on the web, as well as a repository for new data being published for the first time. While compliance with the U.S. Federal public access and open data directives is important, Ag Data Commons aim to surpass them. The goal of Ag Data Commons is to foster innovative data re-use, integration, and visualization to support bigger, better science and policy.

LTAR Network Spatial Data

GIS layers have been published to Ag Data Commons to spatially describe the LTAR Network sites and regions:

LTAR Sites

Metadata and data from the following LTAR sites are presented. They are related to topics such as agricultural sustainability, climate change, ecosystem services, and natural resource conservation at the watershed or landscape scale.

The LTAR Program on the Ag Data Commons

Related Research Networks

Phenocam Network

The PhenoCam Network is a cooperative continental-scale phenological observatory that uses imagery from networked digital cameras to track vegetation phenology in a diverse range of ecosystems across North America and around the World.  This is the list of Phenocams in the LTAR Network. 

AmeriFlux Network

AmeriFlux is a network of PI-managed sites measuring ecosystem CO2, water, and energy fluxes in North, Central and South America. It was established to connect research on field sites representing major climate and ecological biomes, including tundra, grasslands, savanna, crops, and conifer, deciduous, and tropical forests. This is the list of Ameriflux towers in the LTAR Network. 

LTAR Remote Sensing/GIS Working Group Data Products

  • The LTAR Network regions dataset: This dataset consists of three sets of regional boundaries. These GIS datasets are intended to be used for mapping the network and for summarizing spatial data relevant to domains of sustainable intensification corresponding with agricultural production, environmental impact, and rural prosperity.
  • Spreadsheet of remote sensing and geospatial data products:  List of recommended data products by the LTAR Remote sensing/GIS Working Group.

Related Data Resources

  • The National Agricultural Library’s Agricultural Thesaurus and Glossary are online vocabulary tools of agricultural terms in English and Spanish and are cooperatively produced by the National Agricultural Library, USDA, and the Inter-American Institute for Cooperation on Agriculture as well as other Latin American agricultural institutions Cancel belonging to the Agriculture Information and Documentation Service of the Americas (SIDALC).
  •  An online repository of policies, tools, case studies, and other resources to support data governance, management, exchange, and use throughout the federal government.
  •  The Geospatial Platform is a cross-agency collaborative effort and Shared Service that embodies the principles and spirit of Open Government, emphasizing government-to-citizen communication, accountability, and transparency.
  • USDA GeoHub: The Enterprise Geospatial Management Office provides enterprise-level leadership to align geospatial strategic planning, policy, tactical implementation and operational capability with USDA’s Mission requirements and performance goals. Our key focus areas are: ensuring agency geospatial products and services are represented and managed as enterprise assets; enabling equal access to shared services; conducting public service innovation prototypes
  • Landscape Change Monitoring System: The Landscape Change Monitoring System (LCMS) is a remote sensing-based system for mapping and monitoring landscape change across the United States. LCMS produces annual maps depicting change (vegetation loss and vegetation gain), land cover, and land use from 1985 to present that can be used to assist with a wide range of land management applications.



The USDA Agricultural Research Service (ARS) Long-Term Agroecosystem Research network consists of 18 Federal and university agricultural research sites with an average of over 50 years of history. The goal of this research network is to ensure sustained crop and livestock production and ecosystem services from agroecosystems, and to forecast and verify the effects of environmental trends, public policies, and emerging technologies.