Last updated: 2019-11-14

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Knit directory: BloomSail/

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library(tidyverse)
library(data.table)
library(lubridate)
library(DataExplorer)

CTD Sensor data

Regular profiles and transects

CTD Sensor data including recordings from auxiliary pH, O2, Chla and pCO2 sensors were recorded with a measurement frequency of 15 sec. Furthermore, pCO2 data were also internally recorded on the Contros HydroC instrument with higher temporal resolution and will be used for further analysis.

setwd("C:/Mueller_Jens_Data/Research/Projects/BloomSail/data/TinaV/Sensor/Profiles_Transects")
files <- list.files(pattern = "[.]cnv$")
#file <- files[1]

for (file in files){
  
  start.date <- data.table(read.delim(file, sep="#", nrows = 160))[[78,1]]
  start.date <- substr(start.date, 15, 34)
  start.date <- mdy_hms(start.date, tz="UTC")
  
  tempo <- read.delim(file, sep="", skip = 160, header = FALSE)
  tempo <- data.table(tempo[,c(2,3,4,5,6,7,9,11,13)])
  names(tempo) <- c("date", "Dep.S", "Tem.S", "Sal.S", "V_pH", "pH", "Chl", "O2", "pCO2")
  tempo$start.date <- start.date
  tempo$date <- tempo$date + tempo$start.date
  
  tempo$transect.ID <- substr(file, 1, 6)
  tempo$type <- substr(file, 8,8)
  tempo$label <- substr(file, 8,10)
  
  tempo$cast <- "up"
  tempo[date < mean(tempo[Dep.S == max(tempo$Dep.S)]$date)]$cast <- "down"
  
  if (exists("dataset")){
    dataset <- rbind(dataset, tempo)
  }
  
  if (!exists("dataset")){
    dataset <- tempo
  }
  
  rm(start.date)
  rm(tempo)
}


CTD <- dataset
rm(dataset, file, files)


setwd("C:/Mueller_Jens_Data/Research/Projects/BloomSail/")

CTD recordings were cleaned from obviously erroneous readings, by setting values to NA.

#### plots generated to check succesful read-in and data-quality ####
#### removal of errornous recordings ####

#### Profiling data

# Temperature

# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(Tem.S, Dep.S, col=label, linetype = cast))+
#   geom_line()+
#   scale_y_reverse()+
#   geom_vline(xintercept = c(10, 20))+
#   facet_wrap(~transect.ID)

CTD[transect.ID == "180723" & label == "P07" & Dep.S < 2 & cast == "up"]$Tem.S <- NA

# Salinity

# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(Sal.S, Dep.S, col=label, linetype = cast))+
#   geom_path()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID)

CTD[Sal.S < 6]$Sal.S <- NA

# pH

# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(pH, Dep.S, col=label, linetype=cast))+
#   geom_path()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID)
# 
# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(V_pH, Dep.S, col=label, linetype=cast))+
#   geom_path()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID)

CTD[pH < 7.5]$V_pH <- NA
CTD[pH < 7.5]$pH <- NA

CTD[transect.ID == "180709" & label == "P03" & Dep.S < 5 & cast == "down"]$pH <- NA
CTD[transect.ID == "180709" & label == "P05" & Dep.S < 10 & cast == "down"]$pH <- NA
CTD[transect.ID == "180718" & label == "P10" & Dep.S < 3 & cast == "down"]$pH <- NA
CTD[transect.ID == "180815" & label == "P03" & Dep.S < 2 & cast == "down"]$pH <- NA
CTD[transect.ID == "180820" & label == "P11" & Dep.S < 15 & cast == "down"]$pH <- NA

CTD[transect.ID == "180709" & label == "P03" & Dep.S < 5 & cast == "down"]$V_pH <- NA
CTD[transect.ID == "180709" & label == "P05" & Dep.S < 10 & cast == "down"]$V_pH <- NA
CTD[transect.ID == "180718" & label == "P10" & Dep.S < 3 & cast == "down"]$V_pH <- NA
CTD[transect.ID == "180815" & label == "P03" & Dep.S < 2 & cast == "down"]$V_pH <- NA
CTD[transect.ID == "180820" & label == "P11" & Dep.S < 15 & cast == "down"]$V_pH <- NA


# pCO2

# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(pCO2, Dep.S, col=label, linetype = cast))+
#   geom_path()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID)

CTD[transect.ID == "180616"]$pCO2 <- NA

# O2

# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(O2, Dep.S, col=label, linetype = cast))+
#   geom_path()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID)

# Chlorophyll

# CTD %>% 
#   filter(type == "P") %>% 
#   ggplot(aes(Chl, Dep.S, col=label, linetype = cast))+
#   geom_path()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID)

CTD[Chl > 100]$Chl <- NA


#### Surface transect data

# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, Dep.S, col=label))+
#   geom_point()+
#   scale_y_reverse()+
#   facet_wrap(~transect.ID, scales = "free_x")
# 
# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, Tem.S, col=label))+
#   geom_point()+
#   facet_wrap(~transect.ID, scales = "free_x")
# 
# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, Sal.S, col=label))+
#   geom_point()+
#   facet_wrap(~transect.ID, scales = "free_x")
# 
# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, pCO2, col=label))+
#   geom_point()+
#   facet_wrap(~transect.ID, scales = "free_x")
# 
# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, pH, col=label))+
#   geom_point()+
#   facet_wrap(~transect.ID, scales = "free_x")
# 
# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, Chl, col=label))+
#   geom_point()+
#   facet_wrap(~transect.ID, scales = "free_x")

CTD[type == "T" & Chl > 10]$Chl <- NA


# CTD %>% 
#   filter(type == "T") %>% 
#   ggplot(aes(date, O2, col=label))+
#   geom_point()+
#   facet_wrap(~transect.ID, scales = "free_x")

Relevant columns were selected and renamed, only observations from regular stations (P01-P13) and transects (T01-T13) were selected and summarized data were written to file.

CTD <-
  CTD %>% 
  select(date_time=date,
         ID=transect.ID,
         type,
         station=label,
         cast,
         dep=Dep.S,
         sal=Sal.S,
         tem=Tem.S,
         pCO2,pH,V_pH,O2,Chl)

CTD <- CTD %>% 
  filter( !(station %in% c("PX1", "PX2", "TX1", "TX2") ))

CTD %>% 
  write_csv(here::here("data/_summarized_data_files", "Tina_V_Sensor_Profiles_Transects.csv"))

The output of an automated Exploratory Data Analysis (EDA) performed with the package DataExplorer can be accessed here

CTD %>%
  arrange(date_time) %>% 
  filter(type == "P") %>%
  ggplot(aes(tem, dep, col=station, linetype = cast))+
  geom_path()+
  scale_y_reverse()+
  labs(x="Temperature (°C)", y="Depth (m)")+
  facet_wrap(~ID, labeller = label_both)
Temperature profiles recorded on regular stations P01-P13. ID refers to the starting date of each cruise.

Temperature profiles recorded on regular stations P01-P13. ID refers to the starting date of each cruise.

Version Author Date
1595fe9 jens-daniel-mueller 2019-10-21
CTD %>%
  arrange(date_time) %>% 
  filter(type == "P") %>%
  ggplot(aes(pCO2, dep, col=station, linetype = cast))+
  geom_path()+
  scale_y_reverse()+
  labs(x=expression(pCO[2]~(µatm)), y="Depth (m)")+
  facet_wrap(~ID, labeller = label_both)
pCO~2~ profiles (analog output from HydroC) recorded on regular stations P01-P13. ID refers to the starting date of each cruise. Please note that pCO~2~ measurement range is restricted to 100-500  µatm here due to the settings of the analog voltage output of the sensor. Zeroing periods are included.

pCO2 profiles (analog output from HydroC) recorded on regular stations P01-P13. ID refers to the starting date of each cruise. Please note that pCO2 measurement range is restricted to 100-500 µatm here due to the settings of the analog voltage output of the sensor. Zeroing periods are included.

Version Author Date
1595fe9 jens-daniel-mueller 2019-10-21

pCO2 data

HydroC pCO2 data were provided by KM Contros after applying a drift correction to the raw data, which was based on pre- and post-deployment calibration results.

# Read Contros corrected data file

HC <-
  read_csv2(here::here("Data/TinaV/Sensor/HydroC-pCO2/corrected_Contros",
                       "parameter&pCO2s(method 43).txt"),
            col_names = c("date_time", "Zero", "Flush", "p_NDIR",
                          "p_in", "T_control", "T_gas", "%rH_gas",
                          "Signal_raw", "Signal_ref", "T_sensor",
                          "pCO2", "Runtime", "nr.ave")) %>% 
  mutate(Flush = as.factor(as.character(Flush)),
         Zero = as.factor(as.character(Zero))) %>% 
  select(date_time, Zero, Flush, pCO2)

Individual deployments (periods of observations with less than 30 sec between recordings) were identified and relevant deployment periods were subsetted.

# Deployments: Identification

HC <- HC %>% 
  mutate(date_time = dmy_hms(date_time),
         deployment = cumsum(c(TRUE,diff(date_time)>=30)))


# Deployments: Plots

# for (i in unique(HC$deployment)) {
# 
#   HC %>%
#     filter(deployment == i) %>%
#     ggplot(aes(date_time, pCO2_corr, col=as.factor(Zero)))+
#     geom_line()
# 
#   ggsave(here::here("/Plots/TinaV/Sensor/HydroC_diagnostics/Deployments",
#                     paste(i,"_deployment_HydroC_timeseries.jpg", sep="")),
#          width = 15, height = 4)
# 
# }
# 
# HC %>%
#   ggplot(aes(date_time, pCO2_corr, col=as.factor(deployment)))+
#   geom_line()
# 
# ggsave(here::here("/Plots/TinaV/Sensor/HydroC_diagnostics/Deployments",
#                   "all_deployment_HydroC_timeseries.jpg"),
#        width = 40, height = 4)




# Deployments: Subset relevant periods ------------------------------------

# Subset deployment 29 for high resolution response time determination

# HC %>%
#   filter(deployment == 29) %>%
#   write_csv(here::here("Data/_summarized_data_files",
#                        "Tina_V_Sensor_HydroC_RT-experiment_29.csv"))

HC <- HC %>% 
  filter(deployment %in% c(2,6,9,14,17,21,23,27,29,31,33,34,35,37))

Individual zeroings were labeled with a counter and a period of 10 min after the zeroing was labelled as Flush period (overriding the internal Flush flag). A mixing flag was introduced, flagging the initial 20 sec of each Flush period as “mixing” and the rest as “equilibration”.

# Zeroing ID labelling

HC <- HC %>% 
  group_by(Zero) %>% 
  mutate(Zero_ID = as.factor(cumsum(c(TRUE,diff(date_time)>=30)))) %>% 
  ungroup()


# Flush: Identification

HC <- HC %>% 
  mutate(Flush = 0) %>% 
  group_by(Zero, Zero_ID) %>% 
  mutate(start = min(date_time),
         duration = date_time - start,
         Flush = if_else(Zero == 0 & duration < 600, "1", "0")) %>% 
  ungroup()


#  Flush: Identify equilibration and internal gas mixing periods

HC <- HC %>% 
  mutate(mixing = if_else(duration < 20, "mixing", "equilibration"))

# Flush <- HC %>% 
#   filter(Flush == 1, duration <=300)


# Flush: Plot individual periods

# for (i in unique(Flush$Zero_ID)) {
# 
#   Flush %>%
#     filter(Zero_ID == i) %>%
#     ggplot(aes(duration, pCO2, col=mixing))+
#     geom_point() +
#     scale_color_brewer(palette = "Set1")
# 
#   ggsave(here::here("/Plots/TinaV/Sensor/HydroC_diagnostics/Flush",
#                     paste(i,"_Zero_ID_HydroC_Flush.jpg", sep="")),
#          width = 10, height = 4)
# 
# }
# 
# for (i in unique(HC$Zero_ID)) {
# 
#   HC %>%
#     filter(Flush == 1, Zero_ID == i) %>%
#     ggplot(aes(duration, pCO2, col=mixing))+
#     geom_point() +
#     scale_color_brewer(palette = "Set1")
# 
#   ggsave(here::here("/Plots/TinaV/Sensor/HydroC_diagnostics/Flush",
#                     paste(i,"_Zero_ID_HydroC_HC.jpg", sep="")),
#          width = 10, height = 4)
# 
# }


# Clean data: Plot deployments

# for (i in unique(HC$deployment)) {
# 
#   HC %>%
#     filter(Zero ==0, Flush == 0, deployment == i) %>%
#     ggplot(aes(date_time, pCO2_corr, col=Zero_ID))+
#     geom_line()
# 
#   ggsave(here::here("/Plots/TinaV/Sensor/HydroC_diagnostics/Deployments_clean", paste(i,"_deployment_only_HydroC_timeseries.jpg", sep="")),
#          width = 15, height = 4)
# 
# }

Summarized pCO2 date were written to file.

# Write summarized data files

HC %>% 
  write_csv(here::here("Data/_summarized_data_files",
                       "Tina_V_HydroC.csv"))

# Flush %>%
#   write_csv(here::here("Data/_summarized_data_files",
#                        "Tina_V_HydroC_Flush.csv"))

Tasks / open questions

  • include standardized data quality checks after each step of read-in and merging

  • Include data around Ostergarnsholm island and crossing large vessels

  • Include information about HydroC calibration results and raw data correction by Contros

  • Check results from field response time experiment (high zeroing frequency)


sessionInfo()
R version 3.5.0 (2018-04-23)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 17763)

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

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

other attached packages:
 [1] DataExplorer_0.8.0 lubridate_1.7.4    data.table_1.12.6 
 [4] forcats_0.4.0      stringr_1.4.0      dplyr_0.8.3       
 [7] purrr_0.3.3        readr_1.3.1        tidyr_1.0.0       
[10] tibble_2.1.3       ggplot2_3.2.1      tidyverse_1.2.1   

loaded via a namespace (and not attached):
 [1] tidyselect_0.2.5  xfun_0.10         haven_2.1.1      
 [4] lattice_0.20-35   colorspace_1.4-1  vctrs_0.2.0      
 [7] generics_0.0.2    htmltools_0.4.0   yaml_2.2.0       
[10] rlang_0.4.1       pillar_1.4.2      glue_1.3.1       
[13] withr_2.1.2       modelr_0.1.5      readxl_1.3.1     
[16] networkD3_0.4     lifecycle_0.1.0   munsell_0.5.0    
[19] gtable_0.3.0      workflowr_1.4.0   cellranger_1.1.0 
[22] rvest_0.3.4       htmlwidgets_1.5.1 evaluate_0.14    
[25] labeling_0.3      knitr_1.25        parallel_3.5.0   
[28] highr_0.8         broom_0.5.2       Rcpp_1.0.2       
[31] scales_1.0.0      backports_1.1.5   jsonlite_1.6     
[34] fs_1.3.1          gridExtra_2.3     hms_0.5.1        
[37] digest_0.6.22     stringi_1.4.3     grid_3.5.0       
[40] rprojroot_1.3-2   here_0.1          cli_1.1.0        
[43] tools_3.5.0       magrittr_1.5      lazyeval_0.2.2   
[46] crayon_1.3.4      whisker_0.4       pkgconfig_2.0.3  
[49] zeallot_0.1.0     xml2_1.2.2        assertthat_0.2.1 
[52] rmarkdown_1.16    httr_1.4.1        rstudioapi_0.10  
[55] R6_2.4.0          igraph_1.2.4.1    nlme_3.1-137     
[58] git2r_0.26.1      compiler_3.5.0