SRTM_GSOD_elevation

datasets

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>.

Adam Sparks

GSODR

Global Summary Daily Weather Data in R

SRTM_GSOD_elevation function

A data frame with 28322 observations of 2 variables:
<dl> </dl> Station elevation information for the US National Climatic Data Centre (NCDC) Global Surface Summary of the Day (GSOD) weather data. The original file has
missing and incorrect geographic data including location (LAT/LON) and elevation. This data frame provides an alternative set of elevation values
with the following changes to the original list of stations from the NCDC:
<ol>
<li>Stations with both a latitude and longitude of 0 degrees were removed.
</li>
<li>Stations with longitude values that are beyond -180/180 degrees were removed.
</li>
<li>Stations with latitude values that are beyond -90/90 degrees were removed.
</li>
<li>A new field for elevation is included, ELEV_M_SRTM_90m. This was created using mean values of a 200m buffer around the reported LAT/LON
station location within the CGIAR-CSI hole-filled 90m SRTM digital elevation model (Jarvis <em>et al</em>. 2008).
</li>
</ol> For more on this, please consult the document available from the GSODR GitHub repository detailing the process used to generate these data,
<a href="https://github.com/ropensci/GSODR/blob/master/data-raw/fetch_isd-history.md">https://github.com/ropensci/GSODR/blob/master/data-raw/fetch_isd-history.md</a>

Format

<a href="/link/ftp%3A%2F%2Fftp.ncdc.noaa.gov%2Fpub%2Fdata%2Fnoaa%2Fisd-history.csv?package=GSODR&version=1.0.0" data-mini-rdoc="GSODR::ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-history.csv">ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-history.csv</a>

Source

<a href = 'ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-history.csv'>ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-history.csv</a>

SRTM_GSOD_elevation: SRTM_GSOD_elevation

Description

Usage

Arguments

Format

Source

References