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Knit directory: bgc_argo_r_argodata/analysis/

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Task

Only core Argo - focus on temperature anomalies in 2023 in the eastern North Atlantic

Dependencies

temp_core_va.rds - temperature of core argo floats after vertical alignment for a given year.

core_metadata.rds - file with metadata concerning the floats such as platform number, cycle number, date, lat, lon and quality control results.

temp_anomaly_va.rds - file containing the temperature anomalies (temp core - climatology).

SST_anomaly2023_NorthAtlantic_clim2004.rds - file containing SST anomalies for each lat, lon, month on a 1°x1° grid. Data from the SOM-FFN model with same climatology than Argo, i.e. 2004-2019.

Outputs

path_emlr_utilities <- "/nfs/kryo/work/jenmueller/emlr_cant/utilities/files/"
path_basin_mask <- "/nfs/kryo/work/datasets/gridded/ocean/interior/reccap2/supplementary/"
path_argo <- '/nfs/kryo/work/datasets/ungridded/3d/ocean/floats/bgc_argo'
path_argo_core <- '/nfs/kryo/work/datasets/ungridded/3d/ocean/floats/core_argo_r_argodata_2024-03-13'

path_argo_core_preprocessed <- paste0(path_argo_core, "/preprocessed_core_data")

path_mhw<- '/net/kryo/work/datasets/gridded/ocean/2d/obs/mhw'
#Area of interest: North Atlantic north west - lat:(60,30), lon:(-70,-30), North Atlantic east - lat:(0,40), lon:(-30,0)
chosen_extent <- list(
  lat_min = 0, #30
  lat_max = 40, #60
  lon_min = -30, #-70
  lon_max = 0 #-30
)  

name_extent<- "East" #Northwest

#base map for the plots
world_coordinates <- map_data("world") 

#year of interest
target_year<-2023

Load data

Load biomes

#---------------- Biomes ----------------
#Load biome separations 
region_masks_all <-
  stars::read_ncdf(paste(
    path_basin_mask, "RECCAP2_region_masks_all_v20221025.nc", sep = "")) %>%
  as_tibble() %>% 
  mutate(seamask = as.factor(seamask))

region_masks_all <- region_masks_all %>% 
  mutate(lon = ifelse(lon > 180, lon - 360, lon)) %>% #shift longitude to be in range (-180°, 180°) for better vizualisation 
  pivot_longer(open_ocean:atlantic, 
               names_to = 'region',
               values_to = 'value') %>% 
  mutate(value = as.factor(value))

#Biomes North Atlantic
region_masks_atlantic <- region_masks_all %>% 
  filter(region == 'atlantic',
         value != 0) %>%
  mutate(coast = as.character(coast))

biomes_atlantic <- region_masks_atlantic %>% 
  filter(value %in% c(1,2,3))

biomes_subset <- biomes_atlantic %>%
  select(lat, lon, biome_value = value) 

biomes_names<-c("SPSS", "STSS", "STPS")

ggplot()+
  geom_map(data = world_coordinates, map = world_coordinates, aes(long, lat, map_id = region), fill = "grey") + #base map
  lims(x= c(-100, 50), y = c(0, 80))+ #North Atlantic
  coord_quickmap(expand = 0) +
  geom_tile(data = biomes_atlantic,   aes(x = lon,  y = lat,  fill = value))+
  scale_fill_manual(values = c("1" = "cadetblue", "2" = "azure", "3" = "lightskyblue3"),
                    labels = biomes_names) +
  labs(title = 'Biomes - North Atlantic basin',
       subtitle = 'RECCAP data',
         x = "longitude", y = "latitude", fill = "Biomes") +
  theme(plot.title = element_text(size = 16), 
        plot.subtitle = element_text(size = 12),
        legend.text = element_text(size = 10),  
        legend.title = element_text(size = 12, face = "bold"),
        legend.key.width = unit(0.5, "cm"),
        legend.key.height = unit(2, "cm"))

Version Author Date
cc29085 mlarriere 2024-06-06

Load Argo floats data

Load SST anomaly

#Read SST anomaly, computed using climatology:2009-2019 (from anomaly_SST_2023.Rmd)
sst_anomaly_northAtlantic<- read_rds(paste(path_argo_core_preprocessed, "/SST_anomaly2023_NorthAtlantic_clim2004-2019.rds", sep = ""))

Argo floats

Distribution over North Atlantic basin

#Histogram -- number of floats per month and biome
unique_platforms_per_month <- core_anomaly_with_platform_2023 %>%
   group_by(month) %>%
  filter(lat>0, lat<70, lon>-80, lon<0) %>% 
   summarize(unique_platforms = n_distinct(platform_number))


ggplot(unique_platforms_per_month, aes(x = factor(month), y = unique_platforms)) +
    geom_bar(stat = "identity", fill = "lightskyblue3",color = "black", size = 0.25) +
    labs(title = "Amount of platform per month, in North Atlantic, 2023", 
         x = "Months", y = "Number of argo floats", fill = "Biomes") +
    theme_minimal() +
    guides(fill = FALSE)

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    # scale_fill_manual(values = c("1" = "#1034A6", "2" = "#f59c04", "3" = "darkred"), labels = c("1" = "SPSS", "2" = "STSS", "3" = "STPS")) +

#Number of cycle per platform
cycle_counts <- core_anomaly_with_platform_2023 %>%
  group_by(platform_number) %>%
  summarise(cycle_count = n_distinct(cycle_number))
print(cycle_counts)
# A tibble: 4,621 × 2
   platform_number cycle_count
   <chr>                 <int>
 1 1901443                  14
 2 1901514                  34
 3 1901604                   5
 4 1901701                  37
 5 1901711                  31
 6 1901727                  38
 7 1901728                  26
 8 1901730                  37
 9 1901731                  37
10 1901732                  37
# ℹ 4,611 more rows
#Join the SST anomaly with the core Argo anomaly profiles
core_anomaly_with_platform_2023<-core_anomaly_with_platform_2023 %>% 
  filter(!is.na(depth)) %>% 
  select(-profile_range, -day_of_year)

complete_anomaly_profile<- core_anomaly_with_platform_2023 %>%
  inner_join(sst_anomaly_northAtlantic, by = c("lat", "lon", "month"))

#---Chosen subset
core_anomaly_2023_natlantic_subset<- complete_anomaly_profile %>% 
 filter(lat > chosen_extent$lat_min, lat < chosen_extent$lat_max, 
         lon > chosen_extent$lon_min, lon < chosen_extent$lon_max) %>% 
  select(-interpolated_temp) 

Distribution over East-North Atlantic

Using the SST map computed in “anomaly_SST_2023.Rmd” and ClimateReanalyser, we identify 1 area of particular interest for SST anomalies in 2023 in the North Atlantic Ocean: The East coast of the North Atlantic Ocean, where the SST anomalies are high on an annual basis, with a sharp increase from June onwards.

#Number of platform present per month in the chosen area
platform_counts <- aggregate(platform_number ~ month, data = core_anomaly_2023_natlantic_subset, FUN = function(x) length(unique(x)))

#Number of cycle present per month and per platform in the chosen area
cycle_count_per_platform_month <- core_anomaly_2023_natlantic_subset %>%
  group_by(month, platform_number) %>%
  summarise(cycle_count = n_distinct(cycle_number))

#---Plot the platfrom present in each month
custom_labeller <- function(variable, value) {
  month_count <- platform_counts[platform_counts$month == value, "platform_number"]
  return(paste("Month:", value, "\nNumber of floats:", month_count))
}

sst_anomaly_northAtlantic_subset<-sst_anomaly_northAtlantic %>% 
   filter(lat > chosen_extent$lat_min, lat < chosen_extent$lat_max, 
         lon > chosen_extent$lon_min, lon < chosen_extent$lon_max)

ggplot() +
  geom_tile(data=sst_anomaly_northAtlantic_subset, aes(x = lon, y = lat, fill = SST_anomaly)) + #tile with SST
  geom_point(data = core_anomaly_2023_natlantic_subset, aes(x = lon, y = lat), color = "lightblue") + # Point for float position
  geom_map(data = world_coordinates, map = world_coordinates, aes(long, lat, map_id = region), fill = "grey") + #base map
  lims(x = c(chosen_extent$lon_min, chosen_extent$lon_max), y=c(chosen_extent$lat_min, chosen_extent$lat_max)) + 
  coord_quickmap(expand = 0) +
  scale_fill_viridis_c(option = "plasma") +
  labs(title = "Platform Locations",
       subtitle = "Resolution: 1°x1°, SST from SOM",
       color = "Months with float") +
  theme(plot.title = element_text(size = 16), 
        plot.subtitle = element_text(size = 12),
        legend.text = element_text(size = 10),  
        legend.title = element_text(size = 12, face = "bold"),
        legend.key.width = unit(0.5, "cm"),
        legend.key.height = unit(2, "cm"))+
  facet_wrap(~month, ncol = 3, labeller = custom_labeller)

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13

Anomaly profiles

Individual float

Inspection of single floats to understand the physical processes impacting the argo floats measurements

unique_platform<-core_anomaly_2023_natlantic_subset %>% 
  filter(platform_number==1902323)

ggplot() +
  geom_path(data=unique_platform, aes(x = anomaly, y = depth, color = factor(month), group = cycle_number)) +
  geom_vline(xintercept = 0) +
  scale_y_reverse() +
  coord_cartesian(xlim = c(-6, 6), ylim = c(200, 0)) +
    scale_color_manual(values = colorRampPalette(c("#2796A5", "#F3712B", "#880D1E"))(12)) +
    labs(title = 'SST anomalies propagation \nof a single float',
         subtitle = 'Location: Canaries Islands (Eddies corridor)',
       x = 'Temperature (°C)', y = 'Depth (m)', color = 'Months') +
   theme(plot.title = element_text(size = 20), 
        plot.subtitle = element_text(size = 16),
        legend.text = element_text(size = 14),  
        legend.title = element_text(size = 15, face = "bold")
        # legend.background = element_rect(fill = "transparent", color='transparent'),
        # legend.position=c(.91,.28),
    )

Version Author Date
cc29085 mlarriere 2024-06-06
2d63792 mlarriere 2024-05-24
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13

Coloring by lat/lon

Inspection of the potential spatial gradient that may influence the SST anomalies penetration: longitude and latitude gradients.

#Calculating monthly mean anomaly + std deviation for each lat/lon pair of the area
anomaly_lat_lon <- core_anomaly_2023_natlantic_subset %>%
  group_by(lat, lon, depth, month, platform_number, cycle_number) %>%
  summarise(
    temp_count = n(),
    temp_anomaly_mean = mean(anomaly, na.rm = TRUE)
    )

# Longitude - gradient north-south
longitude<- ggplot(anomaly_lat_lon, aes(x = temp_anomaly_mean, y = depth, group = interaction(platform_number, cycle_number), color = as.numeric(lon))) +
  geom_path() +
  geom_vline(xintercept = 0) +
  scale_y_reverse(limits = c(200, 0)) +
  coord_cartesian(xlim = c(-6, 6)) +
  facet_wrap(~ month, ncol = 3) +
  # labs(title = "Anomaly Profiles for all longitudes", 
       # subtitle = "All floats and cycles included",
     labs(  x = "Temperature (°C)", y = "Depth (m)", color = "Longitude") + 
  scale_color_viridis_c()+
  theme(plot.title = element_text(size = 20), 
        plot.subtitle = element_text(size = 16),
        legend.text = element_text(size = 14),  
        legend.title = element_text(size = 15, face = "bold"))

# Latitude - gradient west-east
latitude<- ggplot(anomaly_lat_lon, aes(x = temp_anomaly_mean, y = depth, group = interaction(platform_number, cycle_number), color = as.numeric(lat))) +
  geom_path() +
  geom_vline(xintercept = 0) +
  scale_y_reverse(limits = c(200, 0)) +
  coord_cartesian(xlim = c(-6, 6)) +
  facet_wrap(~ month, ncol = 3) +
  # labs(title = "Anomaly Profile for all latitudes", 
       # subtitle = "All floats and cycles included",
       labs(x = "Temperature (°C)", y = "Depth (m)", color = "Latitude") +  
  scale_color_viridis_c()+
  theme(plot.title = element_text(size = 20), 
        plot.subtitle = element_text(size = 16),
        legend.text = element_text(size = 14),  
        legend.title = element_text(size = 15, face = "bold"))


combined_plot <- latitude + longitude + plot_layout(ncol = 1)+
  plot_annotation(title = 'Latitude and longitude gradients',
                  subtitle = "All floats and cycles included",
                  theme = theme(plot.title = element_text(size = 18),
                                plot.subtitle = element_text(size = 16))
                  )
combined_plot

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13

Coloring by SST anomaly

Looking at the SST anomalies that may influence the vertical structure of the MHS penetration

# calculate mean anomaly data
anomaly_summary <- core_anomaly_2023_natlantic_subset %>%
  group_by(platform_number, depth, month, cycle_number, SST_anomaly) %>%
  summarise(
    temp_count = n(),
    temp_anomaly_mean = mean(anomaly, na.rm = TRUE)
  )

#plot
ggplot(anomaly_summary, aes(x = temp_anomaly_mean, y = depth, group = interaction(platform_number, cycle_number), color = as.numeric(SST_anomaly))) +
  geom_path() +
  geom_vline(xintercept = 0) +
  scale_y_reverse(limits = c(200, 0)) +
  coord_cartesian(xlim = c(-6, 6)) +
    facet_wrap(~ month, ncol = 3) +
  labs(title = "Mean Anomaly Profile as a function of SST anomaly",
       x = "Temperature (°C)", y = "Depth (m)", color = "SST Anomaly") +
  scale_color_viridis_c()+
  theme(legend.key.width = unit(0.5, "cm"),
        legend.key.height = unit(2, "cm"))

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13

Day within the month

# calculate mean anomaly data
anomaly_summary_day <- core_anomaly_2023_natlantic_subset %>%
  group_by(platform_number, depth, month, cycle_number, day) %>%
  summarise(
    temp_count = n(),
    temp_anomaly_mean = mean(anomaly, na.rm = TRUE)
  )
#plot for time during month
ggplot(anomaly_summary_day, aes(x = temp_anomaly_mean, y = depth, group = interaction(platform_number, cycle_number), color = as.numeric(day))) +
  geom_path() +
  geom_vline(xintercept = 0) +
  scale_y_reverse(limits = c(200, 0)) +
  coord_cartesian(xlim = c(-6, 6)) +
    facet_wrap(~ month, ncol = 3) +
  labs(title = "Mean Anomaly Profile as function of time",
       x = "Temperature (°C)", y = "Depth (m)", color = "day within \nthe month") +
  scale_color_viridis_c()

Version Author Date
cc29085 mlarriere 2024-06-06
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13

Monthly anomaly profiles

# Dataset with the cycle number per float across months
cycles_per_platform_month<- core_anomaly_2023_natlantic_subset %>%
  group_by(platform_number, month) %>%
  summarize(unique_cycles = toString(unique(cycle_number)))

# Calculating monthly mean anomaly + std dev over the east area by averaging the anomaly of each float present
anomaly_mean <- core_anomaly_2023_natlantic_subset %>% 
  group_by(depth, month) %>% 
  summarise(temp_count = n(),
            temp_anomaly_mean = mean(anomaly, na.rm = TRUE),
            temp_anomaly_sd = sd(anomaly, na.rm = TRUE))

#For each month: the SST anomaly and vertical anomaly profile plots next to each other
for (m in unique(core_anomaly_2023_natlantic_subset$month)) {
  # Filter data 
  map_data <- filter(sst_anomaly_northAtlantic_subset, month == m)
  anomaly_data <- filter(anomaly_mean, month == m)

  # Plot for temperature anomaly map
  map_plot <- ggplot() +
    geom_tile(data=map_data, aes(x = lon, y = lat, fill = SST_anomaly)) +
    geom_map(data = world_coordinates, map = world_coordinates, aes(long, lat, map_id = region), fill = "grey") + #base map
    lims(x = c(chosen_extent$lon_min, chosen_extent$lon_max), y=c(chosen_extent$lat_min, chosen_extent$lat_max)) + 
    coord_quickmap(expand = 0) +
    scale_fill_viridis_c(option = "plasma") +
    labs(title = paste("SST Anomaly (°C) in North Atlantic - 2023", month.name[as.numeric(m)]), 
         subtitle = paste0("Extent: ", name_extent),
         x = "Longitude", y = "Latitude") +
    theme(legend.position = 'right', legend.key.height = unit(2, "cm"),
          plot.title = element_text(size = 18), 
          plot.subtitle = element_text(size = 16),
          legend.text = element_text(size = 13),  
          legend.title = element_text(size = 15, face = "bold")
          # legend.background = element_rect(fill = "transparent", color='transparent'),
          # legend.position=c(.91,.28),
    )
  
  # Plot for anomaly profiles
  anomaly_plot <- ggplot(anomaly_data, aes(x = temp_anomaly_mean, y = depth, color = factor(month))) +
    geom_path() +
    geom_ribbon(aes(xmax = temp_anomaly_mean + temp_anomaly_sd,
                    xmin = temp_anomaly_mean - temp_anomaly_sd,
                    y = depth), alpha = 0.2) +
    geom_vline(xintercept = 0) +
    scale_y_reverse() +
    coord_cartesian(xlim = c(-4, 4), ylim = c(200, 0)) +
    labs(title = paste('Associated anomaly profile in', month.name[as.numeric(m)]), 
         subtitle = paste0("from surface to 200m", "\nNumber of platform:",  nrow(filter(cycles_per_platform_month, month==m))),
         x = 'Temperature (°C)', y = 'Depth (m)') +
    theme_minimal()+
        guides(color = FALSE)+
    theme(legend.position = 'right', legend.key.height = unit(2, "cm"),
          plot.title = element_text(size = 18), 
          plot.subtitle = element_text(size = 16),
          legend.text = element_text(size = 13),  
          legend.title = element_text(size = 15, face = "bold")
        # legend.background = element_rect(fill = "transparent", color='transparent'),
        # legend.position=c(.91,.28),
    )

  
  #plots side by side
  combined_plot <- grid.arrange(map_plot, anomaly_plot, ncol = 2)
  print(combined_plot)
}

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TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]

Version Author Date
cc29085 mlarriere 2024-06-06
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
TableGrob (1 x 2) "arrange": 2 grobs
  z     cells    name           grob
1 1 (1-1,1-1) arrange gtable[layout]
2 2 (1-1,2-2) arrange gtable[layout]
# Vertical anomaly profile for the North Atlantic subset region - monthly 
ggplot(anomaly_mean, aes(x = temp_anomaly_mean, y = depth, color = factor(month))) +
  geom_path() +
  geom_ribbon(aes(xmax = temp_anomaly_mean + temp_anomaly_sd,
                  xmin = temp_anomaly_mean - temp_anomaly_sd,
                  y = depth), alpha = 0.2) +
  geom_vline(xintercept = 0) +
  scale_y_reverse() +
  coord_cartesian(xlim = c(-4, 4), ylim = c(200, 0)) +
  labs(title = paste('Monthly anomaly profile'), 
         subtitle = paste0("Extent: ", name_extent),
       x = 'Temperature (°C)', y = 'Depth (m)') +
  guides(color = FALSE)+
  facet_wrap(~month)

Version Author Date
3ac87c9 mlarriere 2024-05-20
22e0206 mlarriere 2024-05-16
af6594f mlarriere 2024-05-13
# Averaging the mean anomaly profiles on a 2 months period 
anomaly_2months <- core_anomaly_2023_natlantic_subset %>% 
  mutate(period=(as.numeric(month)+1)%/%2)

anomaly_2months<-anomaly_2months %>% 
  group_by(depth, period) %>% 
  summarise(temp_count = n(),
            temp_anomaly_mean = mean(anomaly, na.rm = TRUE),
            temp_anomaly_sd = sd(anomaly, na.rm = TRUE))

#Spread on the entire year
anomaly_2023<-core_anomaly_2023_natlantic_subset %>% 
  group_by(depth) %>% 
  summarise(temp_count = n(),
            temp_anomaly_mean = mean(anomaly, na.rm = TRUE),
            temp_anomaly_sd = sd(anomaly, na.rm = TRUE))

# Vertical anomaly profile for the North atlatinc east region - monthly 
ggplot() +
  geom_path(data=anomaly_2months, aes(x = temp_anomaly_mean, y = depth, color = factor(period))) +
  geom_ribbon(data=anomaly_2023, aes(xmax = temp_anomaly_mean + temp_anomaly_sd, xmin = temp_anomaly_mean - temp_anomaly_sd, y = depth, fill = "spread"), alpha = 0.2) +
  geom_vline(xintercept = 0) +
  scale_y_reverse() +
  coord_cartesian(xlim = c(-4, 4), ylim = c(200, 0)) +
  labs(title = paste('Propagation of SST anomalies in the water column'), 
       subtitle = paste0("Extent: ", name_extent, " North Atlantic bassin in ", target_year),
       x = 'Temperature (°C)', y = 'Depth (m)') +
  scale_color_manual(values =  colorRampPalette(c("blue", "orange", "darkred"))(6), # 2month mean anomalies color
                     breaks = unique(anomaly_2months$period),
                     labels =c("Jan-Feb", "March-April", "May-June", "July-Aug", "Sept-Oct", "Nov-Dec")) +
  scale_fill_manual(values = "grey", # Spread color
                    labels = "yearly") +
  theme(plot.title = element_text(size = 18), 
        plot.subtitle = element_text(size = 12),
        legend.text = element_text(size = 14)) +
  guides(color = guide_legend(title="Period"), fill = guide_legend(title = "Spread")) 

Version Author Date
3ac87c9 mlarriere 2024-05-20

Hovmoeller plot

#---WEEKLY
#adding the week of the year
core_anomaly_2023_natlantic_subset <- core_anomaly_2023_natlantic_subset %>%
  mutate(week = week(date))

#---WEEKLY
anomaly_weekly<-core_anomaly_2023_natlantic_subset %>% 
  group_by(depth, week) %>% 
  summarise(temp_count = n(),
            temp_anomaly_mean = mean(anomaly, na.rm = TRUE))

#---2WEEKS
# Calculating monthly mean anomaly over the east area by averaging the anomaly of each float present
anomaly_2weekly <- core_anomaly_2023_natlantic_subset %>% 
  mutate(week2=(week+1)%/%2) %>% 
  group_by(depth, week2) %>% 
  summarise(temp_count = n(),
            temp_anomaly_mean = mean(anomaly, na.rm = TRUE))

#---MONTHLY
anomaly_monthly <- core_anomaly_2023_natlantic_subset %>% 
  group_by(depth, month) %>% 
  summarise(temp_count = n(),
            temp_anomaly_mean = mean(anomaly, na.rm = TRUE))

#---Hovmoeller plot
breaks_seq=seq(-0.5,2, by=0.5)
labels_name=as.character(seq(-0.5,2, by=0.5))

ggplot(data=anomaly_2weekly, aes(x = week2, y = depth, z = temp_anomaly_mean)) +
  geom_contour_filled(aes(fill = after_stat(level_mid))) + #color = 'gray20', linewidth = 0.5,
  scale_fill_gradient2(name='T°C anomaly', low = "darkblue", high = "darkred", #low = "#CED3DC", high = "#906490"  
                       breaks=seq(-0.5,2, by=0.5), labels=as.character(seq(-0.5,2, by=0.5))) +
  coord_cartesian(ylim = c(200, 0), expand = 0) +
  labs(title = "Temporal progression of SST anomalies penetration in 2023",
       subtitle = paste0("Extent: ", name_extent, ", temporal resolution: 2 weeks"),
       x = "Week of Year",       y = "Depth (m)") +
  theme_minimal() +
  theme(plot.title = element_text(size = 18),
        plot.subtitle = element_text(size = 15),
        axis.title.x = element_text(size = 12), 
        axis.title.y = element_text(size = 12),  
        axis.text.x = element_text(size = 12),   
        axis.text.y = element_text(size = 12),        
        legend.text = element_text(size = 12),
        # legend.position ='bottom' ,
        # legend.direction = "horizontal",  # Layout legend items horizontally
        # legend.box = "horizontal",
        legend.title = element_text(size = 14, face = "bold"),
        legend.key.width = unit(0.5, "cm"),
        legend.key.height = unit(2, "cm")
        )

Version Author Date
cc29085 mlarriere 2024-06-06
2d63792 mlarriere 2024-05-24

Mixed Layer Depth

Absolute maximum anomalies

#Absolute max anomalies for each lat-lon (1 value for each lat-lon pair)
abs_max_SSTanomalies<-core_anomaly_2023_natlantic_subset %>% 
  filter(!is.na(anomaly), depth<=200) %>% 
  group_by(lat, lon) %>%
  summarize(max_SST_anomaly = max(abs(anomaly), na.rm = TRUE))
  

plot1<-ggplot()+
  geom_tile(data=abs_max_SSTanomalies, aes(lon, lat, fill = max_SST_anomaly)) +
  geom_map(data = world_coordinates, map = world_coordinates, aes(long, lat, map_id = region), fill = "grey") +
  lims(x = c(chosen_extent$lon_min, chosen_extent$lon_max), y=c(chosen_extent$lat_min, chosen_extent$lat_max)) + 
  scale_fill_viridis_c(option = "magma") +
  labs(title = "Absolute maximum SST anomaly",
       subtitle= "Annual average - 2023",
       fill = "Absolute max \nSST anomalies [°C]")+
  coord_quickmap(expand = 0)+
  theme(plot.title = element_text(size = 16), 
        plot.subtitle = element_text(size = 12),
        legend.text = element_text(size = 10),  
        legend.title = element_text(size = 11),
         legend.key.width = unit(0.5, "cm"),
        legend.key.height = unit(2, "cm")
        )


#Mean depth at which  max anomaly is found (maximum depth for each lat-lon pair)
mean_depth_max_anomaly<- inner_join(abs_max_SSTanomalies, core_anomaly_2023_natlantic_subset, by=c('lat', 'lon'))
mean_depth_max_anomaly <- mean_depth_max_anomaly %>%
  filter(abs(anomaly) == max_SST_anomaly)

plot2<-ggplot()+
  geom_tile(data=mean_depth_max_anomaly, aes(lon, lat, fill = depth)) +
  geom_map(data = world_coordinates, map = world_coordinates, aes(long, lat, map_id = region), fill = "grey") +
  lims(x = c(chosen_extent$lon_min, chosen_extent$lon_max), y=c(chosen_extent$lat_min, chosen_extent$lat_max)) + 
  scale_fill_scico(palette = "lajolla", direction = -1) +
  # scale_fill_gradient2(name = 'Depth[m]', low = "darkblue", high = "darkred", midpoint = 100, 
  #                      guide = "colorbar",
  #                      breaks=seq(0,1500, by=100), labels=as.character(seq(0,1500, by=100))) + 
  labs(title = "Depth of maximum anomaly [m]",
       subtitle = 'depth range: 0-200m',
       fill = "Depth [m]")+
  coord_quickmap(expand = 0)+
   theme(plot.title = element_text(size = 16), 
        plot.subtitle = element_text(size = 12),
        legend.text = element_text(size = 10),  
        legend.title = element_text(size = 11),
         legend.key.width = unit(0.5, "cm"),
        legend.key.height = unit(2, "cm")
        )

combined_plot<-plot1+plot2
combined_plot

Version Author Date
cc29085 mlarriere 2024-06-06
2d63792 mlarriere 2024-05-24

sessionInfo()
R version 4.2.2 (2022-10-31)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: openSUSE Leap 15.5

Matrix products: default
BLAS:   /usr/local/R-4.2.2/lib64/R/lib/libRblas.so
LAPACK: /usr/local/R-4.2.2/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] scico_1.3.1          patchwork_1.1.2      broom_1.0.5         
 [4] paletteer_1.6.0      cluster_2.1.6        gridExtra_2.3       
 [7] scatterplot3d_0.3-44 viridis_0.6.2        viridisLite_0.4.1   
[10] ggOceanMaps_1.3.4    ggspatial_1.1.7      oce_1.7-10          
[13] gsw_1.1-1            lubridate_1.9.0      timechange_0.1.1    
[16] forcats_0.5.2        stringr_1.5.0        dplyr_1.1.3         
[19] purrr_1.0.2          readr_2.1.3          tidyr_1.3.0         
[22] tibble_3.2.1         ggplot2_3.4.4        tidyverse_1.3.2     
[25] workflowr_1.7.0     

loaded via a namespace (and not attached):
 [1] googledrive_2.0.0   colorspace_2.0-3    ellipsis_0.3.2     
 [4] class_7.3-20        rprojroot_2.0.3     fs_1.5.2           
 [7] rstudioapi_0.15.0   proxy_0.4-27        farver_2.1.1       
[10] fansi_1.0.3         xml2_1.3.3          codetools_0.2-18   
[13] cachem_1.0.6        knitr_1.41          jsonlite_1.8.3     
[16] dbplyr_2.2.1        rgeos_0.5-9         compiler_4.2.2     
[19] httr_1.4.4          backports_1.4.1     assertthat_0.2.1   
[22] fastmap_1.1.0       gargle_1.2.1        cli_3.6.1          
[25] later_1.3.0         htmltools_0.5.8.1   tools_4.2.2        
[28] gtable_0.3.1        glue_1.6.2          maps_3.4.1         
[31] Rcpp_1.0.10         cellranger_1.1.0    jquerylib_0.1.4    
[34] RNetCDF_2.6-1       raster_3.6-11       vctrs_0.6.4        
[37] lwgeom_0.2-10       xfun_0.35           ps_1.7.2           
[40] rvest_1.0.3         lifecycle_1.0.3     ncmeta_0.3.5       
[43] googlesheets4_1.0.1 terra_1.7-65        getPass_0.2-2      
[46] scales_1.2.1        hms_1.1.2           promises_1.2.0.1   
[49] parallel_4.2.2      rematch2_2.1.2      yaml_2.3.6         
[52] sass_0.4.4          stringi_1.7.8       highr_0.9          
[55] e1071_1.7-12        rlang_1.1.1         pkgconfig_2.0.3    
[58] evaluate_0.18       lattice_0.20-45     sf_1.0-9           
[61] labeling_0.4.2      processx_3.8.0      tidyselect_1.2.0   
[64] magrittr_2.0.3      R6_2.5.1            generics_0.1.3     
[67] DBI_1.2.2           pillar_1.9.0        haven_2.5.1        
[70] whisker_0.4         withr_2.5.0         units_0.8-0        
[73] stars_0.6-0         abind_1.4-5         sp_1.5-1           
[76] modelr_0.1.10       crayon_1.5.2        KernSmooth_2.23-20 
[79] utf8_1.2.2          tzdb_0.3.0          rmarkdown_2.18     
[82] isoband_0.2.6       grid_4.2.2          readxl_1.4.1       
[85] callr_3.7.3         git2r_0.30.1        reprex_2.0.2       
[88] digest_0.6.30       classInt_0.4-8      httpuv_1.6.6       
[91] munsell_0.5.0       bslib_0.4.1