This was created by subsetting a global index to the BGC Argo profiles that were within a 300km radius of Marsh Harbour, Abaco Island, Bahamas, using the following code.
library(argoFloats)
indexAll <- getIndex("synthetic")
indexSynthetic <- subset(indexAll,
circle=list(longitude=-77.06, latitude=26.54, radius=300))This "synthetic" type of index is a replacement for the older "merged" index. See
http://www.argodatamgt.org/Data-Mgt-Team/News/BGC-Argo-synthetic-profiles-distributed-on-GDAC
for more on the data file format, the reasons for the change, and the
timetable for the transition from "merged".
Caveat about out-of-date index files
Note that the NetCDF files on Argo repositories are changeable,
not just in content, but also in file name. For example, the data acquired
in a given profile of a given float may initially be provided in real-time
mode (with a file name containing an "R" as the first or second character),
but later be replaced later with a delayed-mode file (with a "D" in the first
or second character). Since index files name data files directly, this means
that index files can become out-of-date, containing references to netcdf
files that no longer exist on the server. This applies to the sample
index files provided with this package, and to user files, and it
explains why getProfiles() skips over files that cannot be downloaded.
Examples
library(argoFloats)
data(indexSynthetic)
plot(indexSynthetic, bathymetry=FALSE)
summary(indexSynthetic)
#> argoFloats summary
#> ------------------
#>
#> * type: index
#> * server: "https://data-argo.ifremer.fr"
#> * file:
#> * url: https://data-argo.ifremer.fr/argo_synthetic-profile_index.txt.gz
#> * ftpRoot: c("ftp://ftp.ifremer.fr/ifremer/argo/dac",
#> "ftp://usgodae.org/pub/outgoing/argo/dac")
#> * destfileRda:
#> * header:
#> # Title : Synthetic-Profile directory file of the Argo Global Data Assembly Center
#> # Description : The directory file describes all individual synthetic-profile files of the argo GDAC ftp site.
#> # Project : ARGO
#> # Format version : 2.2
#> # Date of update : 20201231182413
#> # FTP root number 1 : ftp://ftp.ifremer.fr/ifremer/argo/dac
#> # FTP root number 2 : ftp://usgodae.org/pub/outgoing/argo/dac
#> # GDAC node : CORIOLIS
#> * index with 40 rows and column names: "file", "date", "latitude", "longitude", "ocean", "profiler_type", "institution", "parameters", "parameter_data_mode" and "date_update"
#> * hint: use getProfiles() to download these files from the repository
#> * Processing Log
#>
#> - 2020-12-31 18:52:24 UTC: `create 'argoFloats' object`
#> - 2020-12-31 18:52:30 UTC: `getIndex(server="ifremer-https", filename='argo_synthetic-profile_index.txt.gz", age=0)`
unique(indexSynthetic[["parameters"]])
#> [1] "PRES TEMP PSAL DOXY"
#> [2] "PRES TEMP PSAL DOWN_IRRADIANCE380 DOWN_IRRADIANCE412 DOWN_IRRADIANCE490 DOWNWELLING_PAR CHLA BBP700 CDOM"