| section {oce} | R Documentation |
Sample section Data
Description
This is line A03 (ExpoCode 90CT40_1, with nominal sampling date 1993-09-11).
The chief scientist was Tereschenkov of SOI, working aboard the Russian ship
Multanovsky, undertaking a westward transect from the Mediterranean outflow
region across to North America, with a change of heading in the last few dozen
stations to run across the nominal Gulf Stream axis.
The data flags follow the "WHP Bottle"convention, set by
initializeFlagScheme,section-method() to "WHP bottle". This convention
used to be described at the link
https://www.nodc.noaa.gov/woce/woce_v3/wocedata_1/whp/exchange/exchange_format_desc.htm
but that was found to fail in December 2020.
Usage
data(section)
Speculation on a timing error
In May 2022, it was discovered that the times in this dataset are not fully sequential, at two spots. This might be a reporting error. Station 41 has time listed as 1993-10-03T00:06:00 and that leads to a time reversal. However, if that time were actually on the day before, then the time reversal would vanish, and the inter-station timing of about 5 to 6 hours would be recovered. A similar pattern is seen at station 45. Of course, this hypothesis of incorrect recording is difficult to test, for data taken thirty years ago.
Source
This is based on the WOCE file named a03_hy1.csv, downloaded
from https://cchdo.ucsd.edu/cruise/90CT40_1, 13 April 2015.
See Also
Other datasets provided with oce:
adp,
adv,
amsr,
argo,
cm,
coastlineWorld,
ctdRaw,
ctd,
echosounder,
landsat,
lisst,
lobo,
met,
ocecolors,
rsk,
sealevelTuktoyaktuk,
sealevel,
topoWorld,
wind,
xbt
Other things related to section data:
[[,section-method,
[[<-,section-method,
as.section(),
handleFlags,section-method,
initializeFlagScheme,section-method,
plot,section-method,
read.section(),
section-class,
sectionAddStation(),
sectionGrid(),
sectionSmooth(),
sectionSort(),
subset,section-method,
summary,section-method
Examples
library(oce)
# Gulf Stream
data(section)
GS <- subset(section, 113 <= stationId & stationId <= 129)
GSg <- sectionGrid(GS, p = seq(0, 5000, 100))
plot(GSg, span = 1500) # increase span to show more coastline