Obtain, Organize, and Visualize NCEP Weather Data R package RNCEP version 1.0.11 CRAN Task View: Hydrology (https://CRAN.R-project.org/view=Hydrology) Contains functions to retrieve, organize, and visualize weather data from the NCEP/NCAR Reanalysis (<https://psl.noaa.gov/data/gridded/data.ncep.reanalysis.html>) and NCEP/DOE Reanalysis II (<https://psl.noaa.gov/data/gridded/data.ncep.reanalysis2.html>) datasets. Data are queried via the Internet and may be obtained for a specified spatial and temporal extent or interpolated to a point in space and time. We also provide functions to visualize these weather data on a map. There are also functions to simulate flight trajectories according to specified behavior using either NCEP wind data or data specified by the user. Software Depends: R (>= 2.10), maps Imports: RColorBrewer, abind, fields, tgp, tcltk, graphics, sp Michael U. Kemp <mukemp+RNCEP@gmail.com> Comprehensive R Archive Network (CRAN) Michael U. Kemp [aut, cre], E. Emiel van Loon [ths], Judy Shamoun-Baranes [ths], Willem Bouten [ths] GPL (>= 2) 2025-01-23 application/tgz https://CRAN.R-project.org/package=RNCEP doi:10.32614/CRAN.package.RNCEP