# ℹ Model Info

References to information about each model.

> This is a work in progress. Please help with a PR 😄. Please provide links to the model homepages and GitHub links, contact for model developers, 

## HRRR: High Resolution Rapid Refresh

- [HRRR Homepage (ESRL)](https://rapidrefresh.noaa.gov/hrrr/ "Details about the HRRR model and graphics for the most recent runs.")
- [GSL-Regional-Model-Forum (GitHub)](https://github.com/NOAA-GSL/GSL-Regional-Model-Forum/discussions/ "Ask the HRRR model developers and the community about the HRRR model.")

> Dowell, D. C., and Coauthors, 2022: The High-Resolution Rapid Refresh (HRRR): An Hourly Updating Convection-Allowing Forecast Model. Part I: Motivation and System Description. Wea. Forecasting, **37**, 1371–1395, <https://doi.org/10.1175/WAF-D-21-0151.1>.

> James, E. P., and Coauthors, 2022: The High-Resolution Rapid Refresh (HRRR): An Hourly Updating Convection-Allowing Forecast Model. Part II: Forecast Performance. Wea. Forecasting, **37**, 1397–1417, <https://doi.org/10.1175/WAF-D-21-0130.1>.

> James, E. P., and S. G. Benjamin, 2017: Observation system experiments with the hourly updating Rapid Refresh model using GSI hybrid ensemble-variational data assimilation. Mon. Wea. Rev., **145**, 2897–2918, <https://doi.org/10.1175/MWR-D-16-0398.1>.


```{mermaid}
gantt
  title HRRR Version History
  axisFormat %Y
  HRRRv1 :        2014-09-30, 2016-08-23
  HRRRv2 :        after v1, 2018-07-12
  HRRRv3 :        after v2, 2020-12-02
  HRRRv4 :active, after v3 2020-12-02, 2024-11-01
  RRFS :          after v4, 2026
```


## RAP: Rapid Refresh

ESRL: https://rapidrefresh.noaa.gov/

NCEI: https://www.ncei.noaa.gov/products/weather-climate-models/rapid-refresh-update

AWS: https://registry.opendata.aws/noaa-rap/

> Benjamin, S. G., and Coauthors, 2004: An Hourly Assimilation–Forecast Cycle: The RUC. Mon. Wea. Rev., 132, 495–518, [https://doi.org/10.1175/1520-0493(2004)132<0495:AHACTR>2.0.CO;2](https://doi.org/10.1175/1520-0493(2004)132<0495:AHACTR>2.0.CO;2).

> Benjamin, S. G., and Coauthors, 2016: A North American Hourly Assimilation and Model Forecast Cycle: The Rapid Refresh. Mon. Wea. Rev., **144**, 1669–1694, <https://doi.org/10.1175/MWR-D-15-0242.1>.

```{mermaid}
gantt
  title RAP Model Sources
  axisFormat %Y
  section NCEI
  RUC : 2005-01-01, 2012-05-01
  RAP : 2012-05-01, 2022-05-01
  section Big Data Program
  RAP : 2021-02-22, 2022-02-22
```




## GFS:

## GEFS:

## ECMWF: