wind.dl downloads wind data from the Global Forecast System (GFS) of the
USA's National Weather Service (NWS)
(https://www.ncei.noaa.gov/products/weather-climate-models/global-forecast).
Wind data are taken from NOAA/NCEP Global Forecast System (GFS) Atmospheric
Model collection. Geospatial resolution is 0.5 degrees (approximately 50 km),
and wind is calculated for Earth surface, at 10 m. More metadata
information:
https://pae-paha.pacioos.hawaii.edu/erddap/griddap/ncep_global.graph
Usage
wind.dl(
yyyy,
mm,
dd,
tt,
lon1,
lon2,
lat1,
lat2,
type = "read-data",
trace = 1
)
read.rWind(file)
Arguments
yyyy
Selected year.
mm
Selected month.
dd
Selected day.
tt
Selected time. There are currently several options at the GFS
database: 00:00 - 03:00 - 06:00 - 09:00 - 12:00 - 15:00 - 18:00 - 21:00
(UTC).
lon1
Western longitude
lon2
Eastern longitude
lat1
Southern latitude
lat2
Northern latitude
type
Output type. "read-data" is selected by default, creating an R
object. If you choose "csv", wind.dl create a a CSV file in your working
directory named "wind_yyyy_mm_dd_tt.csv".
trace
if trace = 1 (by default) track downloaded files
file
file name of the saved ".csv" files.
Value
"rWind" and "data.frame" class object or .csv file with U and V
vector components and wind direction and speed for each coordinate
in the study area defined by lon1/lon2 and lat1/lat2.
Details
The output type is determined by type="csv" or type="read-data". If
type="csv" is selected, the function creates a "wind_yyyy_mm_dd_tt.csv" file
that is downloaded at the work directory. If type="read-data" is selected,
an R object (data.frame) is created.
# NOT RUN {# Download wind for Iberian Peninsula region at 2015, February 12, 00:00# }# NOT RUN {wind.dl(2015, 2, 12, 0, -10, 5, 35, 45)
# }# NOT RUN {# }