Tag Archives: R scripts

Volcanic Solar Dimming, ENSO and Temperature Anomalies

In previous posts I have shown plots of global temperature anomaly, volcano and Nino34 trends (here , here). In this post , I want to further  explore the role of volcanic eruptions and Nino34 phases (El Nino, La Nina) on temperature anomalies.

This post shows a 5-panel chart of monthly climate trend data: 1) time line of major volcanoes and Volcanic Explosivity Index (VEI),  2) Mauna Loa Observatory (MLO) Atmospheric  Transmission  (AT) measurements,  3) Stratospheric Aerosol Optical Thickness (SATO) Index,   4) , Nino 34 as an indicator of ENSO and 5)  GISS land-ocean temperature anomaly.

The RClimate script and Climate Time Series data file (CTS.csv) links are provided.

First, here is  the 5-panel chart that I have made showing the monthly volcano time line with Volcano Explosivity Index (VEI) , Atmospheric Transmission at Mauna Loa Observatory, SATO Index as well as the Nino34 SSTA and GISS LOTA. (Click Image to Enlarge)

volcano_VEI_MLOAT_NINO34_GISS_plot

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Climate Charts, Data and RClimate Scripts

While there are many online climate data resources, the source data files are in numerous data formats, presenting a challenge to climate citizen scientists who want to retrieve and analyze several climate indicators at the same time.

I have been working to develop a consolidated open access data file and RClimate scripts that users can use to retrieve climate data, conduct their own analysis  and generate their own climate charts.  My goal is to make it easier for climate citizen scientists to get their hands on the data in a simple,  usable format (CSV). This post updates the status of my RClimate efforts.

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LearnR Toolkit To Help Excel Users Move Up To R (updated 6/14/14)

As a former  Excel chart user, I want to help current Excel users make the transition to more advanced charting R with as little difficulty as possible. This post introduces my LearnR Toolkit to help Excel users move up to R in a systematic, step by step fashion.

Introduction

As an Excel chart user, I wanted to produce panel charts like this:

volcano_VEI_MLOAT_NINO34_GISS_plot

 

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RClimate: Converting 5 Global Temperature Anomaly Series to A Common Baseline

The 5 global land-ocean temperature anomaly (LOTA) series use different baseline periods, making direct comparisons between the series more difficult than it would be if each series had the same baseline period.

This post shows how to convert the 5 major LOTA series to a common baseline. Links to on-line source data file and RClimate script are provided. Here is long term LOTA trends using a 133 month moving average and 1979-2008 baseline.

Click to enlarge

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Nov 2010 Year-To-Date Global Temperature Anomaly 1st in 2 Series, 2nd in 3 Series: Update

This post shows the YTD global land – ocean temperature anomaly (LOTA) trends for the 5 major series through November, 2010 and how  2010 YTD ranks over the entire record for each series.  The source data  file link is provided.

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Plotting Atmospheric Temperature Structure and Lapse Rate

This post presents an RClimate script to develop a temperature sounding profile and calculate the ambient lapse rate using University of Wyoming atmospheric sounding data. Understanding atmospheric structure and lapse rate is essential to a full understanding of the role of  greenhouse gases in global warming.

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Oct 2010 Year-To-Date Global Temperature Anomaly 1st in 2 Series, 2nd in 3 Series

This post shows the YTD global land – ocean temperature anomaly (LOTA) trends for the 5 major series through October, 2010 and how  2010 YTD ranks over the entire record for each series. The source data  file link is provided.

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RClimate Tools for Do It Yourself Climate Trend Analysis – Nov, 2010 Update

I have made several updates to  RClimate tools for do-it-yourself  climate scientists.  The downloadable monthly climate trends file  (link to csv file) now includes the 5 major global land-ocean temperature anomaly time series (GISS, HAD, NOAA, RSS, UAH) as well as  PDO, AMO and NINI34 indexes.  Stay tuned, I plan to add several more series in the next few weeks. Do you have any suggestions?

I have also added several functions to my on-line RClimate.txt file to help DIY  citizen climate scientists to quickly and easily retrieve up to date climate trend data so that they can spend their time analyzing the  temperature anomaly and climate oscillation trends rather than slugging through data downloads and reformatting.

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2010 On Track to Being 2nd Warmest Year Since 1880

In this post I present a 5 panel trend charts which show the year-to-date  anomaly trends for the 5 major global temperature anomaly series and a table that shows how  2010 YTD ranks over the entire record for each series. The source data and RClimate script file links are provided.

Click to Enlarge

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September Anomaly Trends Show Global Warming Continues: Update 1

In this post I present a trend chart which shows the September anomaly trends for the 5 major global temperature anomaly series and a table that shows how September 2010 ranks over the entire record for each series. The source data and RClimate script file links are provided.

Update 1: In a comment,  ChristianP  suggested the addition of a loess regression fit to the trend line chart. Thanks ChristianP.

Click to Enlarge

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