WRF-Chem simulations from the manuscript "Strong reduction in near-surface turbulence due to aerosols in South and East Asia" by Hodnebrog, Aunan, Chowdhury, Marelle, Myhre, Stjern and Wang, accepted for publication in npj Clean Air, 2025.

Run and generated by Øivind Hodnebrog (oivind.hodnebrog@cicero.oslo.no) at CICERO.

The nine different experiments are described in the submitted manuscript. They are contained in nine different folders:
- BASE     - WRF-Chem run for years 2003, 2007, 2011, 2015 and 2019
- noARI    - WRF-Chem run for years 2003, 2007, 2011, 2015 and 2019 with aerosol-radiation interactions switched off
- noBCARI  - WRF-Chem run for years 2003, 2007, 2011, 2015 and 2019 with aerosol-radiation interactions switched off for black carbon
- noOAARI  - WRF-Chem run for year 2015 with aerosol-radiation interactions switched off for organic aerosols
- noSO4ARI - WRF-Chem run for year 2015 with aerosol-radiation interactions switched off for sulphate
- noNO3ARI - WRF-Chem run for year 2015 with aerosol-radiation interactions switched off for nitrate
- noNH4ARI - WRF-Chem run for year 2015 with aerosol-radiation interactions switched off for ammonium
- noSSARI  - WRF-Chem run for year 2015 with aerosol-radiation interactions switched off for sea salt
- noDUSTARI- WRF-Chem run for year 2015 with aerosol-radiation interactions switched off for dust
All experiments have been downscaled to cover South and East Asia

All experiment folders have one subfolder for each year. In each folder there are files of various filetypes described below.

########## Content of the subfolders per experiment per year: ##########

There is one subfolder for each year, containing the following files:
- wrfout_d01_YYYY-MM_inst.nc: Monthly average fields for many variables.
- wrfout_d01_YYYY-MM-01_accu.nc: Monthly output of accumulated variables (e.g., precipitation).
- wrfout_d01_YYYY-MM-DD_hrly.nc: Hourly output of several variables.
- wrfout_d01_YYYY-MM-DD_hrly_sfc.nc: Hourly output of the lowermost level value for several 3D variables. 
- wrfout_d01_YYYY-MM-DD_prec.nc: Hourly precipitation (note that this is given as accumulated and not instantaneous).
- wrfout_d01_YYYY-MM-DD_NILU.nc: Hourly output of the 20 lowermost layers for selected 3D variables.
- wrfxtrm_d01_YYYY-MM-DD_HH:MM:SS: Contains variables relevant for extreme analysis at daily temporal resolution (e.g., T2MIN and T2MAX).
- wrfrst_d01_YYYY-MM-DD_HH:MM:SS: Restart files

# Files with names ending in _hrly.nc:
- Daily files with hourly output for many variables. These are mostly 2D variables, but ozone (“o3”) and PM2.5 (“PM2_5_DRY”) are included here for the three lowermost vertical layers and turbulent kinetic energy ("TKE_PBL") for all vertical layers.

# Files with names ending in _hrly_sfc.nc
- Daily files with hourly output of several gas/aerosol components. These are 3D variables, but extracted for the lowermost layer only.

# Files with names ending in _prec.nc
- Daily files with hourly output of precipitaiton (convective and non-convective over the preceding hour).

# Files with names ending in _inst.nc
- Monthly files with monthly instantaneous means (for variables like temperature that are instantaneous).
- XLAT/XLONG gives the lat/lon coordinates for the center of the grid boxes.

# Files with names ending in _accu.nc:
- Monthly files with monthly accumulated data (for variables that are accumulated such as precipitaiton).

# Files beginning with wrfrst:
- Restart files 

# Files beginning with wrfxtrm:
- Files with extreme daily values from the whole timeperiod of the run (from restart to restart), i.e. if the one particular run went from January 1st 2003 to May 1st 2003 before outputting and automatically restarting this file will have the daily maximum and minimum temperature etc for each of the days in this interval.

# Note on grid resolution
- *_hrly.nc and *_hrly_sfc.nc files have fewer grid boxes than the other files (230x150 instead of 250x170). In these the outer bondary of 10 grid boxes around the domain has been removed, because results in the outermost grid boxes usually cannot be trusted. In the top folder there are grid files that define both this reduced grid and the full grid.