WeatherData HowTo for SIMONA with Copernicus ERA5 data at SIMONA RTD (#…

…968) WeatherData HowTo for SIMONA with Copernicus ERA5 data at SIMONA RTD
ie3-institute · Sep 25, 2024 · c6e546f · c6e546f
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -34,6 +34,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Additional tests to check flexibility options of thermal house and storage [#729](https://github.com/ie3-institute/simona/issues/729)
 - EmAgents should be able to handle initialization [#945](https://github.com/ie3-institute/simona/issues/945)
 - Added option to directly zip the output files [#793](https://github.com/ie3-institute/simona/issues/793)
+- Added weatherData HowTo for Copernicus ERA5 data [#967](https://github.com/ie3-institute/simona/issues/967)
 
 ### Changed
 - Adapted to changed data source in PSDM [#435](https://github.com/ie3-institute/simona/issues/435)

diff --git a/docs/readthedocs/_static/bibliography/bibtexAll.bib b/docs/readthedocs/_static/bibliography/bibtexAll.bib
@@ -189,4 +189,10 @@ @Book{Kittl_2022
   address   = {Düren},
   year      = {2022},
   doi       = {10.17877/DE290R-22548}
+}
+
+@MISC{Radiation_ECMWF,
+  author = {Robin Hogan},
+  title = {Radiation Quantities in the ECMWF model and MARS},
+  howpublished = {\url{https://www.ecmwf.int/sites/default/files/elibrary/2015/18490-radiation-quantities-ecmwf-model-and-mars.pdf}}
 }
diff --git a/docs/readthedocs/howto/weatherDataHowToCopernicusERA5.md b/docs/readthedocs/howto/weatherDataHowToCopernicusERA5.md
@@ -0,0 +1,34 @@
+(weatherDataHowToCopernicusERA5)=
+
+# How To use Copernicus ERA5 weather data in SIMONA
+
+To use weather data from the past within SIMONA we recommend to use the dataset [ERA5 hourly data on single levels from 1940 to present](https://cds-beta.climate.copernicus.eu/datasets/reanalysis-era5-single-levels?tab=download) of [Copernicus Climate Data Store](https://cds-beta.climate.copernicus.eu/).
+
+The following data parameter should be used
+
+- Wind
+    - 100m u-component of wind
+    - 100m v-component of wind
+- Radiation
+  - Total sky direct solar radiation at surface (FDIR)
+  - Surface solar radiation downwards (SSRD)
+- Temperature
+  - 2m temperature
+
+Since SIMONAs [PV Model](pv_model) requires direct and diffuse solar radiation, the diffuse solar radiation need to be determined from the ERA5 data.
+
+## Pre-Processing solar radiation weather data
+
+To obtain diffuse solar radiation data from ERA5 weather data, the necessary diffuse solar radiation (FDIFF) at surface can be calculated by
+
+$$
+ FDIFF = SSRD - FDIR
+$$
+
+*with*\
+**SSRD** = Surface solar radiation downwards\
+**FDIR** = Total sky direct solar radiation at surface
+
+
+**References:**
+* {cite:cts}`Radiation_ECMWF`
diff --git a/docs/readthedocs/usersguide.md b/docs/readthedocs/usersguide.md
@@ -119,6 +119,13 @@ Besides a configuration and the actual grid and grid participants, SIMONA also e
 There is an option to use sample weather data, but if you want sensible results, definitely consider supplying suitable data.
 Information on the expected data format and different supported sources are given in the input parameters section of the {doc}`config` file.
 
+The following How-To's are available:
+```{toctree}
+---
+maxdepth: 1
+---
+howto/weatherDataHowToCopernicusERA5
+```
 
 ## Simulation Outputs