http://processtrends.com Global Warming Trend Analysis with R and Excel Trend chart shows monthly temperature anomaly data for 5 major temperature Land - Ocean anomaly series: GISS, NOAA, Hadley, RSS and UAH. First 3 use station data, the last 2 use satellite based observations. The CSV data file is updated monthly from source agency data files. All source agency data is downloaded monthly so that any changes in source data will be reflected in the consolidated file. http://processtrends.com/RClimate.htm#consoldiated_5_series Wed, 24 Feb 2010 11:30:00 EST This R script allows users to retrieve monthly Arctic Sea Ice Extent data file and generate a trend chart showing monthly traces for each month. Users can source() the script to generate an up-to-date chart without having to download either the data file or script. http://processtrends.com/RClimate.htm#Arctic_Sea_Ice_Extent_by_Month Wed, 10 Feb 2010 11:30:00 EST This R script continues my effort to provide a family of R scripts that allow users to access online climate agency without having to download and store the source data or copy/paste scripts. Users can simply source() the scripts to get a plot of the latest climate data. This R script retrieves RSS's monthly temperature anomaly data file, calculates the annual means and generates a plot that highlights the latest monthly reading. Users can run this script and reproduce the chart on their PC without having to download either the script or data file. Simply source() the R script in an R session on your PC and you'll have the chart ready to print on your PC. http://processtrends.com/RClimate.htm#RSS Fri, 05 Feb 2010 12:50:00 EST This R script retrieves NOAA's NCDC SST anomaly trend file, calculates the decadal means and generates a plot that highlights the latest monthly reading. Users can run this script and reproduce the chart on their PC without having to download either the script or data file. Simply source() the R script in an R session on your PC and you'll have the chart ready to print on your PC. http://processtrends.com/RClimate.htm#SST_Anomaly Mon, 01 Feb 2010 10:30:00 EST Enhanced Data Visualization Charts in Excel and R http://www.processtrends.com/index.htm Mon, 01 Feb 2010 10:30:00 EST I have started a new page to present a series of R scripts that retrieve on-line climate data from international climate agencies, process data and generate trends charts. The R script files are set up so that users can source() the file with 1 command and execute the R script from ProcessTrends.com without having to download either the data or R script. http://processtrends.com/RClimate.htm Wed, 20 Jan 2010 08:30:00 EST In a previous post I discussed problems with an Excel based CO2 and temperature trend chart that used 2 Y axes. Double axis charts can be misleading because they may distort the Y axis for one of the series. In this post I show another example of am ineffective double Y axis CO2 and temperature trend chart and present 2 alternative ways to show the same data more effectively. Links to my R scripts and Google spreadsheet based data file are included. http://chartsgraphs.wordpress.com/2009/08/31/co2-and-temperature-trends// Fri, 25 Sep 2009 10:10:00 EDT This post presents an R based chart of global GISS land and sea temperature anomaly data for the 1880-2009 period with both the long term trend and the individual decadal trends. Links to the source data file and the R script are provided so that readers can reproduce/ improve on this analysis. http://chartsgraphs.wordpress.com/2009/07/02/decadal-trend-rates-in-global-temperature/ Thu, 02 Jul 2009 17:10:00 EDT