| riem_measures {riem} | R Documentation |
Get weather data from one station
Description
Get weather data from one station
Usage
riem_measures(
station = "VOHY",
date_start = "2014-01-01",
date_end = as.character(Sys.Date())
)
Arguments
station |
station ID, see riem_stations() |
date_start |
date of start of the desired data, e.g. "2000-01-01" |
date_end |
date of end of the desired data, e.g. "2016-04-22" |
Details
The data is queried through https://mesonet.agron.iastate.edu/request/download.phtml.# nolint: line_length_linter
Value
a data.frame (tibble tibble) with measures, the number of columns can vary from station to station, but possible variables are
station: three or four character site identifier
valid: timestamp of the observation (UTC)
tmpf: Air Temperature in Fahrenheit, typically @ 2 meters
dwpf: Dew Point Temperature in Fahrenheit, typically @ 2 meters
relh: Relative Humidity in
drct: Wind Direction in degrees from north
sknt: Wind Speed in knots
p01i: One hour precipitation for the period from the observation time to the time of the previous hourly precipitation reset. This varies slightly by site. Values are in inches. This value may or may not contain frozen precipitation melted by some device on the sensor or estimated by some other means. Unfortunately, we do not know of an authoritative database denoting which station has which sensor.
alti: Pressure altimeter in inches
mslp: Sea Level Pressure in millibar
vsby: Visibility in miles
gust: Wind Gust in knots
skyc1: Sky Level 1 Coverage
skyc2: Sky Level 2 Coverage
skyc3: Sky Level 3 Coverage
skyc4: Sky Level 4 Coverage
skyl1: Sky Level 1 Altitude in feet
skyl2: Sky Level 2 Altitude in feet
skyl3: Sky Level 3 Altitude in feet
skyl4: Sky Level 4 Altitude in feet
presentwx: Present Weather Codes (space seperated), see e.g. Chapter 8 of [this manual](https://www.ofcm.gov/publications/fmh/FMH1/FMH1.pdf) for further explanations.# nolint: line_length_linter
feel: Apparent Temperature (Wind Chill or Heat Index) in degF
ice_accretion_1hr: Ice Accretion over 1 Hour in inch
ice_accretion_3hr: Ice Accretion over 3 Hour in inch
ice_accretion_6hr: Ice Accretion over 6 Hour in inch
relh: Relative Humidity in
metar: unprocessed reported observation in METAR format
peak_wind_gust: Wind gust in knots from the METAR PK WND remark, this value may be different than the value found in the gust field. The gust field is derived from the standard METAR wind report.
peak_wind_drct: The wind direction in degrees North denoted in the METAR PK WND remark.
peak_wind_time: The timestamp of the PK WND value in the same timezone as the valid field and controlled by the tz parameter.
Examples
## Not run:
riem_measures(
station = "VOHY",
date_start = "2016-01-01",
date_end = "2016-04-22"
)
## End(Not run)