Last updated: 2021-01-25

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1 Scope

Map 3d fields of the predicted target variable (either tco2, cstar or cstar_tref) based on fitted MLRs and climatological fields of predictor variables. In contrast to the direct Cant calculation based on coefficient differences, we apply here the fitted coefficients directly. Cant could also be estimates as the differences between the target variable fields mapped here.

2 Required data

2.1 Predictor fields

Currently, we use following cmorized climatology predictor fields in 2007:

predictors <-
  read_csv(paste(path_version_data,
                 "predictors_M2007.csv",
                 sep = ""))

2.2 MLR models

lm_best_target <-
  read_csv(paste(path_version_data,
                 "lm_best_target.csv",
                 sep = ""))

3 Join MLR + climatologies

# remove predictor variable from model
lm_best_target <- lm_best_target %>%
  mutate(model = str_remove(model, paste(params_local$MLR_target, "~ ")))

# join predictors and MLR
target <- full_join(predictors, lm_best_target)

rm(predictors, lm_best_target)

4 Map target variable

4.1 Apply MLRs to predictor

target <- b_target_model(target)

target <- target %>%
  select(lon,
         lat,
         depth,
         era,
         eras,
         basin,
         basin_AIP,
         gamma,
         params_local$MLR_target)

4.2 Average model target variable

target_average <- m_target_model_average(target)
target_average <- m_cut_gamma(target_average, "gamma")

rm(target)

4.3 Zonal mean sections

For each basin and era combination, the zonal mean of the target variable is calculated. Likewise, sd is calculated for the averaging of the mean basin fields.

target_average_zonal <- m_target_zonal_mean(target_average)
target_average_zonal <- m_cut_gamma(target_average_zonal, "gamma_mean")

5 Write csv

target_average %>%
  write_csv(paste(path_version_data,
                  "target_3d.csv",
                  sep = ""))

target_average_zonal %>%
  write_csv(paste(path_version_data,
                  "target_zonal.csv",
                  sep = ""))

sessionInfo()
R version 4.0.3 (2020-10-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: openSUSE Leap 15.2

Matrix products: default
BLAS:   /usr/local/R-4.0.3/lib64/R/lib/libRblas.so
LAPACK: /usr/local/R-4.0.3/lib64/R/lib/libRlapack.so

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] metR_0.9.0      scico_1.2.0     patchwork_1.1.1 collapse_1.5.0 
 [5] forcats_0.5.0   stringr_1.4.0   dplyr_1.0.2     purrr_0.3.4    
 [9] readr_1.4.0     tidyr_1.1.2     tibble_3.0.4    ggplot2_3.3.3  
[13] tidyverse_1.3.0 workflowr_1.6.2

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.5               here_1.0.1               lubridate_1.7.9         
 [4] lattice_0.20-41          assertthat_0.2.1         rprojroot_2.0.2         
 [7] digest_0.6.27            R6_2.5.0                 cellranger_1.1.0        
[10] backports_1.1.10         reprex_0.3.0             evaluate_0.14           
[13] httr_1.4.2               pillar_1.4.7             rlang_0.4.10            
[16] readxl_1.3.1             data.table_1.13.6        rstudioapi_0.13         
[19] whisker_0.4              blob_1.2.1               Matrix_1.2-18           
[22] checkmate_2.0.0          rmarkdown_2.5            RcppEigen_0.3.3.9.1     
[25] munsell_0.5.0            broom_0.7.3              compiler_4.0.3          
[28] httpuv_1.5.4             modelr_0.1.8             xfun_0.20               
[31] pkgconfig_2.0.3          htmltools_0.5.0          tidyselect_1.1.0        
[34] fansi_0.4.1              crayon_1.3.4             dbplyr_1.4.4            
[37] withr_2.3.0              later_1.1.0.1            grid_4.0.3              
[40] jsonlite_1.7.2           gtable_0.3.0             lifecycle_0.2.0         
[43] DBI_1.1.0                git2r_0.27.1             magrittr_2.0.1          
[46] scales_1.1.1             cli_2.2.0                stringi_1.5.3           
[49] fs_1.5.0                 promises_1.1.1           RcppArmadillo_0.10.1.2.2
[52] xml2_1.3.2               ellipsis_0.3.1           generics_0.1.0          
[55] vctrs_0.3.6              tools_4.0.3              glue_1.4.2              
[58] hms_0.5.3                parallel_4.0.3           yaml_2.2.1              
[61] colorspace_2.0-0         rvest_0.3.6              knitr_1.30              
[64] haven_2.3.1