rnoaa (version 0.8.4)

bsw: Blended sea winds (BSW)

Description

The Blended Sea Winds dataset contains globally gridded, high-resolution ocean surface vector winds and wind stresses on a global 0.25<U+00B0> grid, and multiple time resolutions of six-hourly, daily, monthly, and 11-year (1995<U+2013>2005) climatological monthlies.

Usage

bsw(date = NULL, uv_stress = "uv", resolution = "6hrly", ...)

Arguments

date

(date/character) date, in the form YYYY-MM-DD if resolution is 6hrly or daily, or in the form YYYY-MM if resolution is monthly. For resolution=clm can be left NULL. If given, must be in the range 1987-07-09 to today-1 (yesterday)

uv_stress

(character) one of uv or stresss, not sure what these mean exactly yet. Default: uv

resolution

(character) temporal resolution. one of 6hrly, clm, daily, or monthly. See Details.

...

curl options passed on to HttpClient

Value

an object of class ncdf4

Citing NOAA and BSW data

Message from NOAA: "We also ask you to acknowledge us in your use of the data to help us justify continued service. This may be done by including text such as: The wind data are acquired from NOAA's National Climatic Data Center, via their website http://www.ncdc.noaa.gov/oa/rsad/blendedseawinds.html. We would also appreciate receiving a copy of the relevant publication."

Temporal resolution

• 6hrly: 6-hourly, 4 global snapshots (u,v) at UTC 00, 06, 12 and 18Z

• clm: climatological monthlies; also provided is the scalar mean (u,v,w)

• daily: averages of the 6hrly time points, thus with a center time 09Z; also provided is the scalar mean, (u,v,w)

• monthly: averages of daily data; also provided is the scalar mean (u,v,w)

Details

Products are available from July 9th, 1987 - present.

Uses ncdf4 under the hood to read NetCDF files

Use bsw_cache object to manage cached files.

References

https://www.ncdc.noaa.gov/data-access/marineocean-data/blended-global/blended-sea-winds ftp://eclipse.ncdc.noaa.gov/pub/seawinds/ ieee files: http://www.cpc.ncep.noaa.gov/products/wesley/wgrib2/ieee.html

Examples

# NOT RUN {
# 6hrly data
## uv
x <- bsw(date = "2017-10-01")
## stress
y <- bsw(date = "2011-08-01", uv_stress = "stress")

# daily
z <- bsw(date = "2017-10-01", resolution = "daily")

# monthly
w <- bsw(date = "2011-08", resolution = "monthly")

# clm
# x <- bsw(resolution = "clm")
# }