Christopher Liner’s Post

Here is the code, 14 lines plus some comments. With this you can reproduce my result or try it for your birthday in your home town. ------ # Import Meteostat library and dependencies from datetime import datetime import matplotlib.pyplot as plt from meteostat import Point, Daily, Stations # Set time period start = datetime(1947, 1, 1) end = datetime(2023, 8, 8) # Get daily data from Tulsa station 72356 data = Daily('72356', start, end) data = data.fetch() # pull out 8 Aug data for each year bday = data[(data.index.month==8) & (data.index.day==8)] # Plot line chart of temp max and min bday.plot(y=['tmax','tmin']) plt.ylabel('°C') plt.title('Tulsa 8 August') plt.grid() plt.savefig('1948-2022-tul-8-8-C.png',dpi=400) plt.show()

Colin Sayer's Houston temperature plot is interesting since it shows an upward trend on the min temp for 8 Aug. I wonder if this is related to the relentless sprawl of Houston since the 1930s, an ever growing island of concrete and asphalt. Perhaps the low temp effect in Houston is latent heat as the city grew that kept low temps from dropping too far. No proof, just an idea. Here are two examples from from higher latitude, both in Ontario Canada: Kapuskasing (49.4°N, isolated) and Ottawa (45.4°N, metro). If I squint hard enough I may see a possible metro effect in Ottawa, or maybe I just need glasses.

One last plot. Here is Tulsa max/min 8 Aug temp 1939-2023 with 11-year moving average shown for each. Why 11 years? Glad you asked. The solar cycle is the time frame on which the sun's magnetic field flips polarity, magnetically active sunspots increase and decrease, and solar irradiance waxes and wanes by about 0.15%. The solar cycle is about 11 years.

For those who think in °F, here is the plot.

Here is a 75-year plot for Tulsa max temp on the first of each month. Color scheme: earlier years more red, later years more blue.

Interesting data! I wonder if the summers are staying more consistent but the winters are more dramatically warming? The average annual temps for the cites you've shown increase over the same time period...probably just that old global weather circulation complexity issue we haven't figured out yet! https://www.weather.gov/tsa/weather-event_2012recordwarmyear

You are basically plotting weather, not climate of course. Average august temperatures over a large number of areas may provide more insight (then again, it may not).

Happy Birthday Chris!!! And, may you always enjoy as uniform a distribution of ups and downs as those temperature curves. By the way, many places have a similarly uniform distribution if you take out the NASA "adjustments" which make up about 2/3 of the "hockey stick" in the US.

Worldwide there has been about a 9 year "pause" in warming. Not widely teporyed. This summer may change that but we'll see. 

Most interesting. I'm not a politician or a mathematician, but tmax sure looks like a cooling trend.