| date | max_temp | station |
|---|---|---|
| 1910-01-01 | 26.7 | Perth |
| 1910-01-02 | 27.0 | Perth |
| 1910-01-03 | 27.5 | Perth |
| 1910-01-04 | 24.0 | Perth |
| 1910-01-05 | 24.8 | Perth |
| 1910-01-06 | 24.4 | Perth |
Daily maximum temperature
Very long time series… what’s the intended message?
Recent maximum temperature trend
Lots of fluctuation in temperature… does it show the trend?
Recent maximum temperature
This is showing the fit from a GAM model… but we lost understanding the underlying variation in the original data
Recent maximum temperature
Some models don’t look like a good fit… let’s examine individually
Recent maximum temperature
The legend is redundant here… remove unnessary elements.
Recent maximum temperature
Using loess with span of 0.3 instead … comparison across location is harder when in data shown in different panels
Recent maximum temperature
Casting a shadow of the fitted model across locations in each panel makes it easier to compare …
Recent maximum temperature
There were missing values in data that wasn’t apparent before!
Weekly average maximum temperature
By taking weekly averages, the plot is smoother and you can focus trends in the data instead of getting distracted with daily fluctuations.
Maximum temperature by month
This plot makes it easier to see the monthly variation…
Can you think of other ways to visualise this data?
Line Graph
Is it clear the climate is changing?
Line Graph
Let’s add a geom_smooth() - Is the trend clear now?
Warming Stripes
Sydney #showyourstripes
Graphic by Ed Hawkins: https://showyourstripes.info/
Labelled Strips
Do we need to know what the exact temperature is to get the message?
Bars
Do bar size and summary text help convey change is happening?
Bars with scale
What are the advantages / disadvantages to making this graphic more scientifically accurate?
Climate Spiral
Interactive version shown at the Rio Olympics in 2016
Does animation help convey the climate is warming?
https://climate.nasa.gov/climate_resources/300/video-climate-spiral-1880-2022/
Predicted Extent
What works and what does not work about this warning communication? Source: https://www.brisbane.qld.gov.au/ (now expired)
Zoomed In
Does this map help people to understand if they will be flooded?
Search Addresses
Does using a table to display the data make it clearer?
Source: https://www.brisbane.qld.gov.au/ (now expired)
Probabilistic Words
People interpret probabilistic words in different ways
Likely roughly corresponds to 50% - 70%.
Source: https://hbr.org/2018/07/if-you-say-something-is-likely-how-likely-do-people-think-it-is
Flow of data and information
Warning Levels
https://hazardwatch.gov.au/
VicAlert - 2022-10-17
Hazard levels and related icons
VicAlert - 2022-10-17
Clear hazard messaging
