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wrftools

This package does 3 things

  1. help you to define domains
  2. extract data as points of spatial features and bricks
  3. returns st_bbox from wrf files

I’m not an expert in WRF but i need to use it. One of the very frustating and tricky part was to make a correct namelist.wps. Hours and hours trying to get the perfect domains. This functions solves this part while providing a dynamic maps for actually viewing where are your domains.

Install

remotes::install_github("atmoschem/wrftools")

wrf_domains (better for low latitude regions)

wrf_domains returns a list of:

  1. the map
  2. the sf object

The arguments of wrf_domains are the same arguments of namelist.wps. It include default values but you can change them accordingly.

library(wrftools)
a <- wrf_domains()
a[[1]] # leaflet

xtractor

(inspired in NCL from DCA/IAG/USP)

Which returns data.frame ready for ggplot2. The class of Time is POSIXct

data(cetesb)
cetesb <- cetesb[!is.na(cetesb$Station), "Station"]
#use your wrfout
wrf <- "wrfoA.nc"
t2 = c("T2", "o3", "no", "no2", "PM10", "PM2_5_DRY")
df <- xtractor(atmos = wrf, vars = t2, points = cetesb,
stations = cetesb$Station)

and raster bricks

library(cptcity)
r <- xtractor(atmos = wrf, vars = t2, points = cetesb[1, ], return_list = T)
#  A list with raster and data.frame
sp::spplot(r[[1]][[2]], "layer.60",
           scales = list(draw = T), col.regions = cpt(1224))

Contributing

If you see any errors and know how to improve the function, or add new functions write an issue and a pull request, please. I will be ver grateful, for sure, 100%.