cimp5_1951_2000_cv: Coefficient Variation of the Mean Seafloor Climatic Data...

cimp5_1951_2000_cvR Documentation

Coefficient Variation of the Mean Seafloor Climatic Data among CIMP5 Models during 1951 to 2000

Description

Coefficient variation of the mean historical export POC flux to seafloor, bottom dissolved oxygen concentration, hydrogen ion concentration and temperature were averaged from the Geophysical Fluid Dynamics Laboratory’s ESM 2G (GFDL-ESM-2G), Institut Pierre Simon Laplace’s CM6-MR (IPSL-CM5A-MR) and Max Planck Institute’s ESM-MR (MPI-ESM-MR) within the Coupled Models Intercomparison Project Phase 5 (CIMP5).

Format

A RasterBrick object of 4 raster layers:

epc_cv_1951_to_2000

Coefficient variation of the mean export POC flux to seafloor (%)

o2_cv_1951_to_2000

Coefficient variation of the mean dissolved oxygen concentration at seafloor (%)

ph_cv_1951_to_2000

Coefficient variation of the mean pH at seafloor (%)

thetao_cv_1951_to_2000

Coefficient variation of the mean potential temperature at seafllor (%)

arag_cv_1951_to_2000

Coefficient variation of aragonite Concentration (%)

calc_cv_1951_to_2000

Coefficient variation of calcite Concentration (%)

co3_cv_1951_to_2000

Coefficient variation of mole Concentration of Carbonate expressed as Carbon in Sea Water (%)

co3satarag_cv_1951_to_2000

Coefficient variation of mole Concentration of Aragonite expressed as Carbon in Sea Water at Saturation (%)

co3satcalc_cv_1951_to_2000

Coefficient variation of mole Concentration of Calcite expressed as Carbon in Sea Water at Saturation (%)

Details

Yearly mean from 1951 to 2000 (historical) were calculated for the GFDL-ESM-2G, IPSL-CM5A-MR and MPI-ESM-MR respectively. Coefficient variation of the mean was calculated among the three models for the periods of 1951 to 2000. The export POC flux at seafloor was computed from the export production at 100 m (epc100) using the Martin curve (Martin et al., 1987) following the quation: Flux = epc100*(depth/export depth)^-0.858. The depth use etopo1 and export depth was set to 100 m. All CIMP5 data were download from https://esgf-node.llnl.gov/search/esgf-llnl/.

Source

https://esgf-node.llnl.gov/search/esgf-llnl/

Examples

# Mask the raster brick by 200 to 2000 m
r0 <- mask(cimp5_1951_2000_cv, mask2000)

# Only show color between 1 to 99 percentile
r <- raster()
for(i in 1:4){
  d <- subset(r0, i)
  ma <- quantile(d, 0.99)
  mi <- quantile(d, 0.01)
  d[d>ma] <- ma
  d[d<mi] <- mi
  r <- addLayer(r, d)
}
names(r) <- names(r0)

# plot on google earth
library(plotKML)
for(i in 1:4){
  plotKML(subset(r, i), folder.name=names(r)[i],
          colour_scale = jet.col.log(100),
          raster_name = paste(names(r)[i], "png", sep="."))
}

chihlinwei/SCC85 documentation built on Sept. 15, 2023, 4:47 a.m.