Anthropogenic global warming is real, it is it is worldwide and it will affect future generations.

D Kelly O’Day, PE – Retired

Visit my website: ProcessTrends.Com

As an environmental engineer, I have been concerned about the environment since I got my BS (1967) and MS (1971) degrees in Civil/ Environmental Engineering and started working as a water engineer. This blog and my ProcessTrends.com website combine my data analysis, total quality management and environmental  interests and present R and Excel charts that show global environmental trends.

I have prepared dozens of charts & graphs looking at every aspect of global warming that I could. My early Excel based analysis is here. My more recent R based analysis is here. I have used publicly available data sources to reach my own conclusions. I provide the data links and my R script for each chart/ graph so that interested readers can confirm my work for themselves.

Here’s a quick summary of my evidence for global warming.

Rising Global Temperatures

  • Global land and sea surface air temperature (SAT) anomalies have been rising at a rapid rate since the 1970s. My chart of NASA GISS ‘s monthly temperature anomaly trends from 1880 shows a rapid rise since the 1970s.
  • Satellite based global temperature anomalies show a similar trend to the NASA GISS trend. My chart of  RSS satellite based global temperature anomalies since 1979 is consistent with the NASA GISS trend.
  • Global sea surface temperature (SST) anomalies have also been rising, as shown in my chart of NOAA global SST anomalies since 1880.
  • Temperature changes over the globe are not uniform, see this polar amplification discussion. My polar amplification chart shows that Arctic region temperatures have increased much more than lower latitudes. .

Rising Mean Sea Level

Declining Arctic Sea ice Extent

  • Arctic sea ice extent measures the area where sea ice exceeds 15%. My chart of monthly Arctic sea ice extent shows a continuing decline over the satellite observation period starting in 1979. Each month shows a decline. Polar amplification magnifies the global temperature increases so that the Arctic experiences a much greater temperature increase, resulting in shrinking sea ice, reduced solar reflection and reduced albedo.

Next Steps

Take a serious look at my climate trend charts here. Review my  posts on Understanding the Role of CO2 here. Investigate, examine, review, evaluate. The problem is real, it is serious, it is worldwide and it will affect future generations.

Contact me – Please contact me if you have any questions or suggestions or would like to use charts like these in an environmental/ data analysis program.


Qualifications & Experience

  • 40 years experience in water resources planning, design, operations, process optimization
  • BS Civil Engineering (University of Maryland), MS Environmental Engineering (Drexel University)
  • Professional Engineer (PE) Pennsylvania
  • Director, Water Operations, Massachusetts Water Resources Authority, Boston, Ma. (Former)

6 responses to “About

  1. Hi

    Could you tell me if there charts of extreme weather event frequency?

    Thanks for such a great site.


    Ian A

  2. This is an excellent site and a fabulous resource. Congratulations and thanks.

    I’m keen to look at your graphics and find ways to tell the stories they tell in ways that engage less numerate audiences. (I’ve been working on graphics that help provide a sense of scale that viewers can relate to physically as well as numerically. See: http://carbonquilt.org)

  3. While what Mr Pentland says is true, it is not the job of the scientists, engineering experts, climate researchers and data analysts to present their information in TV Broadcast-ready snippets or cleverly packaged YouTube videos. That is the job of specialists in interactive communications and science/economics journalism (like myself). We are not doing it, not effectively, yet.

    Nor are educators and activists, who often seem to forget that their purpose is to reach the 250 million people around the globe who can stop the present madness. An Editor of Nature Magazine the other day took umbrage when I politely suggested that their readership was not only that “choir” we all joke about preaching to, but was less than a tenth of a percent of the people who need to know and, as Mr Pentland rightly counsels, *understand* this stuff. Only then can we realistically expect them to vote for others who understand it, and who have the courage to go up against the established economic and political and religious powers who are now blocking action on climate change.

    We communicators will hopefully stop trying to out-fox Fox and the like, and get better at interpreting these tools full of hard-to-understand facts, and get better at distributing them to the educated minority. If we continue to fail at our job, the great work of people like Mr O’Day in this careful, thoughtful, accurate resource site will die along with civil human society as the climate crisis overwhelms us.

    Please keep up your work, Mr O’Day. My own background includes developing econometric models, so I think I can truly appreciate the scale of your effort.

  4. Pingback: Four Short Links | Resilience Science

  5. I am also obsessed with visualizing the climate system and climate change and believe a blog of this sort is long overdue. On the other hand, communicating, explaining or simply exploring climate change with data-driven graphics is far less valuable without an equally rigorous understanding of the psychological perception of those graphics by members of the public. In particular, most people indulge a presumption of truth and accuracy when interpreting data graphics. The implications of this tendency are very important to the future of climate visualization and should be explored here as well.

  6. I have been teaching myself R for the past couple of months and I also have an interest in applying statistics to understanding climate (“interested amatuer”) and this blog is FANTASTIC! Thanks!

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