get_station_list


This function downloads the latest station list from the NCDC FTP server.
This list includes metadata for all stations including unique identifiers,
country, state (if in US), latitude, longitude, elevation and when weather
observations begin and end. Stations with invalid latitude and longitude
values will not be included.


Provides automated downloading, parsing, cleaning, unit conversion
and formatting of Global Surface Summary of the Day (GSOD) weather data from
the from the USA National Climatic Data Center (NCDC) for use in R. All
units are converted from from United States Customary System (USCS) units to
International System of Units (SI). Stations may be individually checked for
number of missing days defined by the user, where stations with too many
missing observations are omitted. Only stations with valid reported latitude
and longitude values are permitted in the final data. Additional useful
variables, saturation vapour pressure (es), actual vapour pressure (ea) and
relative humidity are calculated from the original data and included in the
final data set. The resulting data include station identification
information, state, country, latitude, longitude, elevation, weather
observations and associated flags. Data may be automatically saved to disk.
File output may be returned as a comma-separated values (CSV) or GeoPackage
(GPKG) file. Additional data are included with this R package: a list of
elevation values for stations between -60 and 60 degrees latitude derived
from the Shuttle Radar Topography Measuring Mission (SRTM). For information
on the GSOD data from NCDC, please see the  GSOD readme.txt file available
from, <http://www1.ncdc.noaa.gov/pub/data/gsod/readme.txt>.

get_station_list: Download the Latest Station List From the NCDC Server

Description

Usage

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Examples