The NOAA GEO-IDE UAF ERDDAP
Easier access to scientific data
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The NOAA GEO-IDE UAF ERDDAPThe goal of this web site is to give you easier access to all of NOAA's data. ERDDAP is a data server that gives you a simple, consistent way to download subsets of gridded and tabular scientific datasets in common file formats and make graphs and maps.
NOAA (the National Oceanic and Atmospheric Administration) is the U.S. federal agency with a mission to understand and predict changes in Earth's environment and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs.
GEO-IDE (the NOAA Global Earth Observation - Integrated Data Environment initiative) is a set of guidelines and best practices that establish a framework for improving the interoperability of NOAA's environmental information management resources. GEO-IDE is a project of the NOAA Data Management Integration Team (DMIT).
UAF (the Unified Access Framework) is a NOAA-wide effort to develop a gridded dataset integration capability. The capability is being developing using several de facto standards: netCDF, which provides the abstract data model, software libraries and a persistent binary format; the Climate and Forecast (CF) metadata conventions; the OPeNDAP protocol for web transport of data subsets; THREDDS XML catalogs which provide a distributed topology connecting data suppliers; and an OGC compatibility layer that provides access to the grids through WMS and WCS.
The initial focus has been to develop a NOAA-wide UAF THREDDS catalog of CF-compliant datasets (e.g. model outputs, satellite products, High Frequency radar observations, etc.) and to connect the catalog to other data servers (e.g., LAS and ERDDAP (this web site!)) and several popular client tools (e.g. MatLab, Google Earth) to enable direct access and use of the datasets.
ERDDAP is a data server that gives you a simple, consistent way to download subsets of scientific datasets in common file formats and make graphs and maps. This ERDDAP installation makes all of the datasets in the NOAA-wide UAF THREDDS catalog and many additional datasets available via ERDDAP. The added benefits of using ERDDAP are:
In it, a scientist uses ERDDAP to download ocean currents forecast data from NOAA's NODC/NCDDC to model a toxic spill in the ocean using NOAA's GNOME software (in 5 minutes!). Thanks to Rich Signell. (One tiny error in the video: when searching for datasets, don't use AND between search terms. It is implicit.)
Start Using ERDDAP:
|Griddap lets you use the OPeNDAP hyperslab protocol to request data subsets, graphs, and maps from gridded datasets (for example, satellite data and climate model data). griddap documentation|
|Tabledap lets you use the OPeNDAP constraint/selection protocol to request data subsets, graphs, and maps from tabular datasets (for example, buoy data). tabledap documentation|
|ERDDAP's "files" system lets you browse a virtual file system and download source data files. WARNING! The dataset's metadata and variable names in these source files may be different than elsewhere in ERDDAP! You might prefer using the dataset's Data Access Form instead. "files" documentation|
|The Web Map Service (WMS) lets you request an image with data plotted on a map. WMS documentation|
In addition to serving data, ERDDAP has some handy converters:
|Acronyms||Convert a Common Oceanic/Atmospheric Acronym to/from a Full Name|
|FIPS County Codes||Convert a FIPS County Code to/from a County Name|
|Interpolate||Interpolate Values From Gridded Dataset Values|
|Keywords||Convert a CF Standard Name to/from a GCMD Science Keyword|
|Time||Convert a String Time to/from a Numeric Time|
|Units||Convert UDUNITS to/from Unified Code for Units of Measure (UCUM)|
|URLs||Convert Out-of-Date URLs into Up-to-Date URLs|
|Variable Names||Convert a Common Oceanic/Atmospheric Variable Name to/from a Full Name|
ERDDAP has an
FGDC Web Accessible Folder (WAF) with FGDC‑STD‑001‑1998 metadata files and an
ISO 19115 Web Accessible Folder (WAF) with ISO 19115‑2/19139 metadata files for all of the geospatial datasets in this ERDDAP.
RESTful Web Services
|Status||The Status web page is a quick way to check the current status/health of this ERDDAP, including a list of datasets which failed to load.|
|Out-Of-Date Datasets||The Out-Of-Date Datasets web page displays a list of near-real-time datasets, ranked by how out-of-date they are.|
|Subscriptions||ERDDAP has an email/URL subscription system so that you can be notified immediately whenever a dataset changes (for example, whenever new data is added to a near-real-time dataset).|
|Slide Sorter||Anyone can use ERDDAP's Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.|
|Data Provider Form||The Data Provider Form is for people who have data and want it to be served by this ERDDAP. It collects basic information about the dataset and emails it to this ERDDAP's administrator.|