ESRL Global Systems Division



The intent of the High Impact Weather Prediction Project's (HIWPP) Open Data Initiative is to provide a mechanism for interaction between public, private, and academic sectors with our project as we develop and explore models that are relatively mature in their developmental life cycle. This provides a benefit to the weather community by giving timely access to high quality, experimental model output, at higher spatial and temporal resolution, and to new tools to analyze, evaluate and visualize these data.


The Rapid Refresh (RAP) is the continental-scale NOAA hourly-updated assimilation/modeling system operational at NCEP. RAP covers North America and is comprised primarily of a numerical forecast model and an analysis/assimilation system to initialize that model.


The High-Resolution Rapid Refresh (HRRR) is a NOAA real-time 3-km resolution, hourly updated, cloud-resolving atmospheric model, initialized by 3km grids with 3km radar assimilation over a 1-h period (since 5 April 2013), adding further detail to the HRRR initial conditions otherwise determined by the hourly data assimilation from the 13km radar-enhanced Rapid Refresh (ESRL version).


The Science On a Sphere® Data Catalog is comprised of datasets from NOAA, NASA, universities, science centers and other organizations. The datasets are divided into the categories of Atmosphere, Ocean, Land, Astronomy, Models and Simulations, and Extras. The catalog is continually growing, so be sure to check back often. Each dataset entry includes a description of the dataset, a picture, a video, notable features, relevant links, and source information.


Integrated Support for Impacted air-Traffic Environments (INSITE)


The Radiosonde data archive is composed of two distinct components: The Archive Dataset (available on CD-ROM and DVD) and the Real-time Dataset (available online).

RUC Soundings -

Generate soundings from Rapid Refresh, FIM, GFS, NAM, and other Model Analyses and Forecasts, RAOBS, Profilers, Radiometers, or Aircraft (restricted).


The Local Analysis and Prediction System (LAPS) is a data assimilation system bringing a variety of datasets (widely available and customized) into numerical models (e.g., MM5, RAMS, WRF) for the production of very detailed analyses of local weather conditions and short-range forecasts.


Event-based Verification and Evaluation of NWS Gridded Products

Aircraft Data - (restricted)

Wind and Temperature Reports from Commercial Aircraft (ACARS) for the Last 30 Day, AMDAR is the generally-accepted worldwide term for automated weather reports from commercial aircraft. These data are routed by several cooperating airlines to GSD, and we decode and quality control the data. Our web site also includes AMDAR data from many European and Asian air carriers.

National Precipitation Data -

Hourly/Daily rain data from NOAA's Earth System Research Laboratory (ESRL) Global Systems Divison (GSD) viewable with a java applet.