Get_IsoValueDepth_WOA: Download climatology data from World Ocean Atlas and...

In chihlinwei/OceanData: Tools to download and extract oceanographic data from various sources

Download climatology data from World Ocean Atlas and calculate the iso-value depth

Description

Download and surface climatology data from Nationa Oceanographic Data Center (NODC) World Ocean Atlas 2013 or Regional Climatology, calculate iso-value depth surface and then convert to a raster object

Usage

Get_IsoValueDepth_WOA(
  url,
  IsoValue = 10,
  x = NULL,
  outdir = NULL,
  plot = FALSE
)

Arguments

url	A character string naming the URL of a CSV file to be downloaded
IsoValue	A numeric values specifying where interpolation is to take place.
x	Raster* object defining the spatial extent, resolution and projection of climatology data to be retrived. If not provide, returning full data set.
outdir	output directory to write raster file
plot	Logical, whether or not to plot the output raster

Details

This function dowloads the surface climatology from http://www.nodc.noaa.gov/OC5/woa13/woa13data.html or http://www.nodc.noaa.gov/OC5/regional_climate/. The global or regional climatology data at standard depths will be download but only the iso-value depth surface are retained based on a template raster object.

Value

a raster object

Author(s)

Chih-Lin Wei <[e-mail]>

Examples

# Raster template of Canadian Arctic
data(tmp)

# Download January temperature data and calculate the 10-degree depth surface
Get_IsoValueDepth_WOA("http://data.nodc.noaa.gov/woa/WOA13/DATAv2/temperature/csv/decav/0.25/woa13_decav_t01an04v2.csv.gz", 
IsoValue=10, tmp, plot=TRUE) 

chihlinwei/OceanData documentation built on Sept. 26, 2022, 2:47 p.m.