Last updated: 2020-11-27

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Knit directory: emlr_obs_preprocessing/

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path_functions      <- "/nfs/kryo/work/updata/emlr_cant/utilities/functions/"
path_files          <- "/nfs/kryo/work/updata/emlr_cant/utilities/files/"
path_gruber_2019    <- "/nfs/kryo/work/updata/cant_gruber_2019/"
path_preprocessing  <- "/nfs/kryo/work/updata/emlr_cant/observations/preprocessing/"

1 Libraries

Loading libraries specific to the the analysis performed in this section.

library(tidync)

2 Data source

3 Read ncdfs

3.1 Public data sets

The publicly available data sets contain only positive Cant estimates.

dcant <- tidync(paste(
  path_gruber_2019,
  "dcant_emlr_cstar_gruber_94-07_vs1.nc",
  sep = ""
))

dcant <- dcant %>%  activate(DCANT_01)
dcant <- dcant %>% hyper_tibble()

# harmonize column names and coordinates
dcant <- dcant %>% 
  rename(lon = LONGITUDE,
         lat = LATITUDE,
         depth = DEPTH,
         cant_pos = DCANT_01) %>% 
  mutate(lon = if_else(lon < 20, lon + 360, lon))
dcant_inv <- tidync(paste(
  path_gruber_2019,
  "inv_dcant_emlr_cstar_gruber_94-07_vs1.nc",
  sep = ""
))

dcant_inv <- dcant_inv %>%  activate(DCANT_INV01)
dcant_inv <- dcant_inv %>% hyper_tibble()

# harmonize column names and coordinates
dcant_inv <- dcant_inv %>% 
  rename(lon = LONGITUDE,
         lat = LATITUDE,
         cant_pos_inv = DCANT_INV01) %>% 
  mutate(lon = if_else(lon < 20, lon + 360, lon)) %>% 
  mutate(eras = "JGOFS_GO")

3.2 Raw data

Internally available data sets also contain negative Cant estimates, as they are contained in the “raw” output of the eMLR mapping step.

V101 <- tidync(paste(path_gruber_2019,
                     "Cant_V101new.nc",
                     sep = ""))

V101 <- V101 %>%  activate(Cant)
V101 <- V101 %>% hyper_tibble()

# harmonize column names and coordinates
V101 <- V101 %>% 
  rename(lon = longitude,
         lat = latitude,
         cant = Cant) %>% 
  filter(cant != -999) %>% 
  mutate(lon = if_else(lon < 20, lon + 360, lon))

4 Apply basin mask

dcant <- inner_join(dcant, basinmask)
dcant_inv <- inner_join(dcant_inv, basinmask)
V101 <- inner_join(V101, basinmask)

5 Join pos and all Cant

cant_3d <- inner_join(dcant, V101)
cant_3d <- cant_3d %>% 
  mutate(eras = "JGOFS_GO")

rm(dcant, V101)

6 Zonal mean section

cant_zonal <- m_zonal_mean_section(cant_3d %>% select(-basin))

7 Column inventory

7.1 From 3d fields

cant_inv <- m_cant_inv(cant_3d)

7.1.1 Cant - all

p_map_cant_inv(
  df = cant_inv,
  var = "cant_inv",
  col = "divergent")

Version Author Date
92e10aa Jens Müller 2020-11-27

7.1.2 Cant - pos

p_map_cant_inv(
  df = cant_inv,
  var = "cant_pos_inv")

Version Author Date
92e10aa Jens Müller 2020-11-27

7.2 From pubished inventory data

p_map_cant_inv(
  df = dcant_inv,
  var = "cant_pos_inv")

Version Author Date
92e10aa Jens Müller 2020-11-27

7.3 Published - 3d

cant_offset <- inner_join(
  cant_inv %>% rename(cant_re = cant_pos_inv),
  dcant_inv %>% rename(cant_pub = cant_pos_inv)
)

cant_offset <- cant_offset %>% 
  mutate(delta_cant = cant_re - cant_pub)

p_map_cant_inv_offset(df = cant_offset,
                      var = "delta_cant",
                      breaks = seq(-3,3,0.25))

Version Author Date
92e10aa Jens Müller 2020-11-27
rm(cant_offset, dcant_inv)

8 Cant plots

Below, following subsets of the climatologies are plotted for all relevant parameters:

  • Horizontal planes at 0, 150, 500, 2000m
  • Meridional sections at longitudes: 335.5, 190.5, 70.5

Section locations are indicated as white lines in maps.

8.1 Horizontal plane maps

8.1.1 All values

p_map_climatology(
  df = cant_3d,
  var = "cant",
  col = "divergent")

Version Author Date
92e10aa Jens Müller 2020-11-27

8.1.2 Positive values

p_map_climatology(
  df = cant_3d,
  var = "cant_pos")

Version Author Date
92e10aa Jens Müller 2020-11-27

8.2 Sections basin

8.2.1 All values

p_section_global(
  df = cant_3d,
  var = "cant",
  col = "divergent")

Version Author Date
92e10aa Jens Müller 2020-11-27

8.2.2 Positive values

p_section_global(
  df = cant_3d,
  var = "cant_pos")

Version Author Date
92e10aa Jens Müller 2020-11-27

8.3 Sections at regular longitudes

8.3.1 All values

p_section_climatology_regular(
  df = cant_3d,
  var = "cant",
  col = "divergent")

Version Author Date
92e10aa Jens Müller 2020-11-27

8.3.2 Positive values

p_section_climatology_regular(
  df = cant_3d,
  var = "cant_pos")

Version Author Date
92e10aa Jens Müller 2020-11-27

9 Write files

cant_3d %>%
  write_csv(paste(path_preprocessing,
                  "G19_cant_3d.csv",
                  sep = ""))

cant_inv %>%
  write_csv(paste(path_preprocessing,
                  "G19_cant_inv.csv",
                  sep = ""))

cant_zonal %>%
  write_csv(paste(path_preprocessing,
                  "G19_cant_zonal.csv",
                  sep = ""))

sessionInfo()
R version 4.0.3 (2020-10-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: openSUSE Leap 15.1

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] tidync_0.2.4    metR_0.9.0      scico_1.2.0     patchwork_1.1.0
 [5] collapse_1.4.2  forcats_0.5.0   stringr_1.4.0   dplyr_1.0.2    
 [9] purrr_0.3.4     readr_1.4.0     tidyr_1.1.2     tibble_3.0.4   
[13] ggplot2_3.3.2   tidyverse_1.3.0 workflowr_1.6.2

loaded via a namespace (and not attached):
 [1] httr_1.4.2               viridisLite_0.3.0        jsonlite_1.7.1          
 [4] here_0.1                 modelr_0.1.8             assertthat_0.2.1        
 [7] blob_1.2.1               cellranger_1.1.0         yaml_2.2.1              
[10] pillar_1.4.6             backports_1.1.10         lattice_0.20-41         
[13] glue_1.4.2               RcppEigen_0.3.3.7.0      digest_0.6.27           
[16] promises_1.1.1           checkmate_2.0.0          rvest_0.3.6             
[19] colorspace_1.4-1         htmltools_0.5.0          httpuv_1.5.4            
[22] Matrix_1.2-18            pkgconfig_2.0.3          broom_0.7.2             
[25] haven_2.3.1              scales_1.1.1             whisker_0.4             
[28] later_1.1.0.1            git2r_0.27.1             farver_2.0.3            
[31] generics_0.0.2           ellipsis_0.3.1           withr_2.3.0             
[34] cli_2.1.0                magrittr_1.5             crayon_1.3.4            
[37] readxl_1.3.1             evaluate_0.14            fs_1.5.0                
[40] ncdf4_1.17               fansi_0.4.1              xml2_1.3.2              
[43] RcppArmadillo_0.10.1.0.0 tools_4.0.3              data.table_1.13.2       
[46] hms_0.5.3                lifecycle_0.2.0          munsell_0.5.0           
[49] reprex_0.3.0             isoband_0.2.2            compiler_4.0.3          
[52] RNetCDF_2.4-2            rlang_0.4.8              grid_4.0.3              
[55] rstudioapi_0.11          labeling_0.4.2           rmarkdown_2.5           
[58] gtable_0.3.0             DBI_1.1.0                R6_2.5.0                
[61] ncmeta_0.3.0             lubridate_1.7.9          knitr_1.30              
[64] rprojroot_1.3-2          stringi_1.5.3            parallel_4.0.3          
[67] Rcpp_1.0.5               vctrs_0.3.4              dbplyr_1.4.4            
[70] tidyselect_1.1.0         xfun_0.18