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 Centers for Environmental Information ('NCEI'). 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 elements, saturation vapour pressure ('es'), actual vapour pressure ('ea') and relative humidity ('RH') are calculated from the original data using the improved August-Roche-Magnus approximation (Alduchov & Eskridge 1996) and included in the final data set. The resulting metadata include station identification information, country, state, latitude, longitude, elevation, weather observations and associated flags. For information on the 'GSOD' data from 'NCEI', please see the 'GSOD' 'readme.txt' file available from, https://www1.ncdc.noaa.gov/pub/data/gsod/readme.txt.
Maintainer: Adam H. Sparks adamhsparks@gmail.com (ORCID)
Authors:
Tomislav Hengl tom.hengl@isric.org (ORCID)
Andrew Nelson dr.andy.nelson@gmail.com (ORCID)
Other contributors:
Hugh Parsonage hugh.parsonage@gmail.com (ORCID) [copyright holder, contributor]
Taras Kaduk taras.kaduk@gmail.com (Suggestion for handling bulk station downloads more efficiently) [contributor]
Gwenael Giboire gwenael.giboire@oda-groupe.com (Several bug reports in early versions and testing feedback) [contributor]
Łukasz Pawlik lukpawlik@gmail.com (Reported bug in windspeed conversion calculation) [contributor]
Ross Darnell Ross.Darnell@data61.csiro.au (ORCID) (Reported bug in 'Windows OS' versions causing 'GSOD' data untarring to fail) [contributor]
Tyler Widdison Tyler.Widdison@usav.org (Reported bug where `nearest_stations()` did not return stations in order of nearest to farthest) [contributor]
Curtin University (Supported the development of 'GSODR' through Adam H. Sparks's time.) [copyright holder]
Useful links: