Blog Archives

rNOMADS 2.0.2 released

September 3, 2014
By
rNOMADS 2.0.2 released

I uploaded the newest version of rNOMADS to CRAN yesterday. This one has a new plotting function for wind altitude azimuth, and magnitude (see below for plot and source code). I also added a function for reading GRIB inventories, fixed a few typos, and tweaked a few functions. In other news, the rNOMADS subversion repository

Read more »

Extracting North American Mesoscale (NAM) Model Data with rNOMADS using DODS

July 17, 2014
By
Extracting North American Mesoscale (NAM) Model Data with rNOMADS using DODS

The (relatively) recent upgrade of rNOMADS to version 2.0.0 allows cross platform support for downloading atmospheric and oceanic operational model data into R via the GrADS-DODS system.  However, users have been experiencing difficulty using DODS to get North American Mesoscale (NAM) real time data.  The script below shows an example of getting the NAM 12z

Read more »

rNOMADS 2.0.1 released

July 5, 2014
By
rNOMADS 2.0.1 released

The latest version of rNOMADS is now available on CRAN.  This update resolves several minor bugs and one major one involving multiple variable/level selections when using the ModelGrid function.  I have also added support for two more models on NOMADS:  Climate Forecast System Flux Products and Climate Forecast System 3D Pressure Products.  This brings the

Read more »

Downloading weather, sea ice, and wave model data with the rNOMADS package in R

May 28, 2014
By
Downloading weather, sea ice, and wave model data with the rNOMADS package in R

The NOAA Operational Model Archive and Distribution System is a treasure trove of near real time and archived model outputs describing global and regional weather, sea ice, and wave data.  I developed the rNOMADS package about a year ago to make this available to R users. In this post, I’ll present some source code and

Read more »

Accessing global weather model data using the rNOMADS package in R

March 23, 2014
By
Accessing global weather model data using the rNOMADS package in R

The rNOMADS package interfaces with the NOAA Operational Model Archive and Distribution System to provide access to 55 operational (i.e. real time and prediction) models describing the state of the ocean and the atmosphere. rNOMADS has been used to get wind and wave data for a real time sailing game, to quantify solar energy available

Read more »

How to install rNOMADS on Linux

January 24, 2014
By
How to install rNOMADS on Linux

About 6 months ago, I wrote a package for the R programming language called rNOMADS.  It interfaces with the National Oceanic and Atmospheric Association’s Operational Archive and Distribution System (NOMADS), comprising everything from global weather forecast models, to high resolution regional models, to wave and sea ice models.  rNOMADS uses R to download requested data

Read more »