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Hot in Here: Examining 100M Temperature Readings to Understand Global Warming

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For the past four years, Alteryx and Tableau have been used to process and visualize global climate data. This work has been documented on the site: Climate Change Quantified. Many different descriptive analytical approaches were combined with interactive visualizations to examine the observed climate changes that have happened over time. This work was conducted to gain a better visual and quantitative understanding of global climate changes that have occurred. During this presentation, a new component of this work is explained. A detailed examination of temporal temperature changes at over 5,200 monitoring stations was conducted each day of the year. What this means is that nearly 2 million trend models were computed to quantify changes in temperature across 60 years. The results were used to understand the temporal and spatial temperature changes that have occurred worldwide. The goal of this presentation is to explain global climate change as documented by using historical temperature records. Video recordings of the Alteryx workflows developed to complete this work will be available.

Joe Mako - Consultant, Joe Mako, Inc
Ken Black - Data Scientist, General Motors

Published in: Data & Analytics
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Hot in Here: Examining 100M Temperature Readings to Understand Global Warming

  1. 1. # A L T E R Y X 1 9 PRESENTED BY IT’S HOT IN HERE: EXAMINING 100M TEMPERATURE READINGS TO UNDERSTAND GLOBAL WARMING Ken Black datablends@gmail.com
  2. 2. # A L T E R Y X 1 9 COMPLETE SESSION SURVEYS ATTENTION 2 You were handed a survey as you entered the room. It should take less than 2 minutes to complete Please return your completed surveys B E F O R E YO U L E AV E the room Surveys are anonymous, and we rely on your opinion for improvement
  3. 3. # A L T E R Y X 1 9 3 TODAY’S AGENDA 1. Introductions Who is Ken? 2. Global Warming Definition What do people think they know about this topic? 3. Temperature Data Basics The data used for this study. 4. The Role of Alteryx Transforming >100M temperature readings. 5. Understanding Daily Weather Variation What do we understand about daily temperatures? 6. Comprehending Six Decades of Temperature Change Using visualizations to understand the spatial and temporal changes in daily temperatures over 57 years
  4. 4. # A L T E R Y X 1 9 4 With Alteryx, I can choose to make a difference in the world by studying important topics like Global Warming to inform people about the truth of what is happening on our beautiful planet. KEN BLACK When I use Alteryx, I feel a sense of empowerment. I have yet to experience limits in working with data in Alteryx. A L T E R Y X U S E R S I N C E 2 0 1 4
  5. 5. # A L T E R Y X 1 9 WHO IS KEN? 5 Background • Geologist/Hydrogeologist • Computer Programmer • Applied Mathematician/Numerical Computations • Process Improvement • Alteryx ACE • Tableau Zen Master • Data Scientist/Advanced Analytics at General Motors • Independent Global Warming Researcher
  6. 6. # A L T E R Y X 1 9 GLOBAL WARMING DEFINITION 6 National Defense Research Council Q: What is global warming? A: Here's a simple definition of global warming. (And yes, it's really happening.) Over the past 50 years, the average global temperature has increased at the fastest rate in recorded history. And experts see the trend is accelerating: All but one of the 16 hottest years in NASA's 134-year record have occurred since 2000.
  7. 7. # A L T E R Y X 1 9 GLOBAL WARMING TRENDS 7 Source NOAASource NASA
  8. 8. # A L T E R Y X 1 9 GLOBAL WARMING IMPACTS 8 The Most Comprehensive Analysis of Global Warming Impacts
  9. 9. # A L T E R Y X 1 9 SPECIFIC GLOBAL WARMING IMPACTS 9
  10. 10. # A L T E R Y X 1 9 TEMPERATURE DATA BASICS 10 Daily Maximum and Minimum Temperatures are measured from monitoring stations all around the world. Data from >5,000 stations (1960-2018) is used to uncover the insights in this study. Monitoring station elevations exceed 3 miles high (big blue dots).
  11. 11. # A L T E R Y X 1 9 THE ROLE OF ALTERYX 11 Alteryx has been the data engine on this study for five years. Without Alteryx, I would not have been able to gain these insights. Alteryx has literally completed trillions of calculations to answer the questions I have created. About 70 workflows have been built over time. https://datablends.us/climate-change-quantified/
  12. 12. # A L T E R Y X 1 9 THE ROLE OF ALTERYX 12 An Example Workflow https://datablends.us/climate-change-quantified/
  13. 13. # A L T E R Y X 1 9 UNDERSTANDING DAILY WEATHER VARIATION 13 We all realize that weather can change dramatically from day to day. In the following 4 slides, 4 consecutive days of worldwide weather are shown Notice how hot zones and cold zones move across space and time
  14. 14. # A L T E R Y X 1 9 APRIL 12, 2019 WEATHER 14 We all realize that weather can change dramatically from day to day.
  15. 15. # A L T E R Y X 1 9 APRIL 13, 2019 WEATHER 15 The next day…
  16. 16. # A L T E R Y X 1 9 APRIL 14, 2019 WEATHER 16
  17. 17. # A L T E R Y X 1 9 APRIL 15, 2019 WEATHER 17 And the next day…
  18. 18. # A L T E R Y X 1 9 UNDERSTANDING DAILY WEATHER ACROSS TIME 18 Now imagine you could stop on any day of the year and look at what happens the following year, and another year…
  19. 19. # A L T E R Y X 1 9 LOCAL WEATHER VARIATION 19 Here are two days in March as an example from that monitoring station … The linear trend lines show that both March 1 and 2 have experienced about 3-4 deg F of warming in 57 years. Some stations are warmer, some are cooler across this timeframe.
  20. 20. # A L T E R Y X 1 9 GLOBAL VARIATION 20 Now imagine we compute a couple of million linear models across 57 years… These linear models can be visualized in map form. We can now begin to understand how the spatial and temporal changes across the world have lead to this global average temperature anomaly.
  21. 21. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 21 January 1
  22. 22. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 22 January 11
  23. 23. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 23 March 11
  24. 24. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 24 May 17
  25. 25. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 25 August 7
  26. 26. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 26 September 28
  27. 27. # A L T E R Y X 1 9 COMPREHENDING SIX DECADES OF TEMPERATURE CHANGE 27 December 31
  28. 28. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 28 Now the focus will shift to North America Temperature changes are still shown as percentages
  29. 29. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 29 January 1
  30. 30. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 30 January 11
  31. 31. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 31 March 11
  32. 32. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 32 May 17
  33. 33. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 33 August 7
  34. 34. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 34 September 28
  35. 35. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 35 December 31
  36. 36. # A L T E R Y X 1 9 SIX DECADES OF NORTH AMERICAN TEMPERATURE CHANGES 36 Now the focus will stay in North America Temperature changes are now shown as actual values and as 7- day moving averages
  37. 37. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 37 Most Heating Alaska
  38. 38. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 38 Least Heating Hawaii
  39. 39. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 39 Interesting Effect: Late Season Snowfall Colorado
  40. 40. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 40 Interesting Effect: Significant Winter Heating New York
  41. 41. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 41 Interesting Effect: Cooling Summers Missouri
  42. 42. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 42 The US temperature changes are shown across the seasons All States
  43. 43. # A L T E R Y X 1 9 SEASONAL NORTH AMERICAN TEMPERATURE CHANGES 43 The US temperature changes are shown across the seasons We can now understand how the daily variations relate to the NASA 1.69 degree F of global change
  44. 44. # A L T E R Y X 1 9 44 • A lot of data was used to comprehend spatial and temporal changes in daily temperatures across the world • Over 100M data points and 2M linear models tell the story • There is a lot of consistency in what is happening over time • What causes those changes is up for debate GLOBAL WARMING IS REAL FIVE KEY POINTS Global Warming Is Real Warming and Cooling Are Spatially and Temporally Variable Long-Term Changes Can Be Understood at the Daily Level Alteryx Crushes Massive Amounts of Data Tableau is Superb at Helping Us Understand Our Data 1 2 4 5 3
  45. 45. # A L T E R Y X 1 9 BEFORE YOU LEAVE ATTENTION 45 B E F O R E YO U L E AV E … Please take a moment to complete your evaluation survey. Hand it to the room monitors on your way out.
  46. 46. # A L T E R Y X 1 9 THANK YOU datablends@gmail.com 46 (865) 249-2707 https://datablends.us KEN BLACK

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